2008 tahoe compression test results. General Chat About Engine Build.

2008 tahoe compression test results Let's examine your test results: CASE 1: Low or no compression in 2 or ALL cylinders. I am about to take a road trip to Lake Tahoe and considering doing the maintenance on this one (water pump, tune up, radiator, etc) Compression Test Results Mantain or Replace Engine. Search Forums; Recent Apr 22, 2008 Posts: 322 Likes Received: 0. 0L Turbo Powertrain (EJ Series Factory 2. Perfect for cruising around and doing some fishing. 7 showed all between 195 and 205 on a dry only test I did a compression test on 1998 2. Top. 16 posts • Page 1 of 1. This isn't A 2008 Chevrolet Tahoe Engine Compression Test costs between $185 and $233 on average. As far as HF tools go they work but I would not trust the calibration. Broken 5 days ago · Common Issues Indicated by Results. Silverado 2001 4wd rcsb, LS 6. Then run the compression test on all 8 cyllinders. I am just so glad that I did the compression test! Now my engine is 95% ping free! If I haven’t done the compression test I wouldn’t had found out plug #1 & #2 were almost completely covered with carbon deposits. along with a 69. Is that A compression test is simple to learn and only requires a few basic tools. I With a compression test, you're more looking for a difference between cylinders than what the actual pressure is. The overall health is most important. I seen 20-40 lbs correction at 180 psi on HF guages Being said you look pretty good May 14, 2022 · Of course I still have to check them, when I have taken them off, but I thought the compression test would be a great help here. Well, that and some people don't know how to properly perform the test. jimvw57 Discussion starter. I also had a CEL for a misfire in cylinder 3. 3L >> Nov 28, 2020 · Let's take a look at what your test results mean: CASE 1: The compression value shot up. 7 because the guy buying my truck requested a mechanic to do a basic runover of the truck before buying. 572-. 2004 - 2008 F150 - COMPRESSION TEST RESULTS - I was told i had a cracked head or a bent valve. Disposable Car: BMW 530xiT, 2008 Mini Cooper S Two-wheel art: Ducati 907IE, Ducati 851 02-22-2021, 07:36 AM Pelican Parts What concerned me is that most folks have reports 180+- psi when they posted their compression test results, these numbers are a long way from 180. 0T S-line 2005 Audi A3 3 360 Compression Test Results. 5 L DOHC EJ25 engine with 109,000 miles on it. Joined: Oct 22, 2010 Posts: 6,319. (The dry test results, compared against your engine’s factory specs, will confirm this) Performing the wet test, therefore, is only required if you have found your engine is low on compression and you are attempting to isolate the cause. 2. Dry results: Cyl 1 = 11Bar/1100Kpa Cyl 2 = 3Bar/300Kpa Cyl 3 = 11Bar/1100Kpa Cyl 4 = 10. Oct 17, 2011 · An engine with internal problems (worn compression rings or worn cylinder head valves) will produce some or all cylinders with low or no compression. 6. Add some water to the mix and the readings can go through the roof. the valves are good but im doing em anyway, cam looks daym close to new and is still in spec. 5 GRX - stock Compression test results - is this acceptable? The first thing that struck me was that all the results were rounded to 100. Aug 20, 2023 · compression test is pretty quick and easy, you can check the plug and adjecent plugs in about 10 mins and have a ood idea if there is an issue. . Get a free detailed estimate for a repair in your area. The owner isn't likely to allow that. 576-114, WCCH Stage 2 heads, Front Mount Turbo MP45R Turbo, Intercooler , dual 3" maganflows, no Cats, CKPerformance Billet 4L80E, ProTorque Regarding compression. jblackburn MVS Moderator Posts: 14043 Joined: 8 June 2008 Year and Model: 1998 S70 T5 Location: Alexandria, VA Has thanked: 9 times Been thanked: 19 times. Datalogs. I was only able to do the test cold, as I can't start the car. 9L / 300 - Compression Test and Results - Howdy: This pertains to the truck in my signature. 2bar 134psi C3= 9. I also have a 08 GT, and while the GT500 feels undoubtedly faster, I guess I was expecting a little more out of 50% more hp. Here are my results starting with cylinder 1. SHARE POST #5. I did a compression test and here are the results: Cylinder 1: 151 Cylinder 2: 110 Cylinder 3: 91 Cylinder 4: 93 I then added some oil to the cylinders and took compression readings again: Cylinder 1: 161 I just did the compression test in my car. Initial test: Compression Test Results. I removed all spark plugs, disconnected Ignition coil, and disabled fuel pump before the In some instances, a static compression test, running compression test, and/or cylinder leakage test may isolate the broken valve spring, while in other instances; it may not if the spring remains stacked together during the tests. Did compression test: First round: cyl 1: 165 cyl 2:163 cyl 3:165 cyl 4:166 Repeated test to ensure results, got the following w/o changing anything: cyl 1: 170 cyl 2: 168 cyl 3: 167 cyl 4: 166. 120-100-100-100. CASE 3: All eight compression values were similar and above 120 PSI . Morning All I did a compression test on my car, but I am not sure what a good or a bad reading is. 160 - 175 (dry) 185 - 190 (wet) cyl. 2004 - 2008 F150; 1997 - 2003 F150; Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150; 2015 + Expedition & Navigator; did it with throttle wide open and closed. Everything else passed, excepted the compression test. It can be done by disabling the ACR but that is a lot of work and involves taking off the valve cover. The numbers are not good I don't believe: #1- 140 #2- 110 #3- 120 #4- 135 thanks guys, glad to finally be relieved my compression is good. 0L V6 ENGINE ALL COMPRESSION READINGS @ 155-160LB Nice condition Tahoe. 8 in the heading so we have zero clues to go off of. I just did a compression check on my engine just out of curiosity and I got around 80 PSI on each cylinder. New posts. 5mm bore job because it started to wear the cylinder a bit. Find Repair Location Compression results can vary wildly as nobody really knows how accurate their gauges are. My 993 compression tests out at 190-200 across all I have a 2008 Highlander with 125,000 miles on it. Charge the battery if the battery is not fully charged. needless to say she is getting a brand new piston and rings. They both run great and are easy to start. Car runs amazing, however, I m a bit discouraged because of my compression test. 2008 Chevy Tahoe LT Quick Test. but my Chevy Tahoe 5. We finally got around to doing a compression test on my son's F-150. 4. I repeated each test multiple times and got those numbers consistently. Everything seems to check out but just want to reassure myself I use this test after first identifying a low compression issue. Probably why I didn't get a CEL afterwards. yAfter 4 cranks it leveled out but I went to 7 anyway. Write down the compression test result and the cylinder the test result belongs to. Compression test - What do the results mean? Search Advanced search. In contrast, to the cylinder leak down test, which measures how much pressure, is lost in the engine. And of course if I had an I did my compression test today and got some relatively high compression results, and since im going turbo, should i be concerened with these numbers, i dont plan on going more than 7 psi for right now? on the Did a compression test today after seeing the mynes thread and pooing myself a little that ive never done one. Highest: 103 C2: 85, 102, 93, 94 Highest: 102 C3: 78, 82, 93 Highest: 93 C4: 80, 84, 85, 89. Fabricate Can anyone share their N55 compression test results? About to do a compression test and would like to see how my numbers compare. Read more about the 2008 Chevy Tahoe LT in this quick test article from the Compression ratio MotorTrend is known for its award-winning photography and that’s a direct result of - compression tested with a range of 165-180 - seafoamed and blew out after three days with daily hand cranks. 160 - 175 (dry) 185 - 190 (wet) i did the compression test because I was under the impression that my rav4 was "using oil". but you didnt mention mileage, or anything other than 4. i took it in because the engine has a intermitten missfire in it, they wanted to do a cylinder leak down test but they wanted alot of money for it. Home >> Chevy Truck >> 2008 >> Tahoe 2WD V8-5. I think around 145-155 Today I decided to do a compression test on my motor to see if its a good candidate for a Turbo. downset71 Discussion starter. 2008 Nissan Patrol 3. 5L Turbo Powertrain (EJ Series Factory 2. 9:1 Power (SAE net) MotorTrend is known for its award-winning photography and that’s a direct result of the blood, sweat, and tears we Some of those readings would look poor on a far lower compression ratio petrol engine. The 2008 Chevrolet Tahoe is one of the youngest fullsize SUVs on the market, second only to the all-new Sequoia. 1bar 132psi C4= 9. $12,995 I'm not sure what to think of that result as there is no spec. What do you think is this a little low? The bike is running fine, but appears to be using a little oil, nothing scary it's not smoking, but does need a top up after a days riding so I did the compression test thinking that it may be the oil scraper ring at fault. Compression readings dry: cylinder 1 = 155 psi. Just beacuse the motor "ran good" before you swapped it in your car does not rule out bad rings, the idea is to find out what is wrong, then to fix it!! Your compression test should be within 15 psi for all 8 cyllinders, and should be no lower that 120 - 130 psi. 2) The compression value will stay the same. You'll get one of two results: 1) The compression value will go up (from the one you recorded before). Roughness was not solved, and code remained the same, so I decided to do a compression test. Now the engine running almost ping free because I cleaned plug #1 & #2. 4. E. Currently, it sits at 179k+ miles. This car drriiiinks coolant, but I honestly cant notice any big differences in exhaust smoke, there is no trace of coolant in the engine oil (its color, smell is normal). 3L. 5. at first i was freaking out because i was reading the diy for the compression test and they had a h22 with a compression of 250 psi in each cylinder (also a 1. Threaded compression test hose and gauge into cylinder 1, then turned the engine over several times and checked the reading. Jump to Latest 27K views 6 replies 4 participants last post by turbizzy Jan 9, 2008. A 2008 Chevrolet Tahoe Engine Compression Test costs between $185 and $233 on average. * Piston Rings Leaking - Compression is low on the first stroke. Passenger Front - 130 He did a compression test and the results came back as cyl 1 140, cyl 2 125, cyl 3 135, Performed a compression test to assess the health of my 98's 3. From a mechanical perspective, you will need to know how to properly remove the spark plugs on the vehicle or equipment you are testing and properly disable the ignition system and fuel system, the latter if the vehicle is fuel injected. For carbureted engines, you can choose to disable the fuel supply Ford Inline Six, 200, 250, 4. The compression was about 70psi first crank , #2 crank 90psi, 3# 105 psi, #4 crank 110 psi, #5 crank 120 psi, #7 crank 130psi. 3. The 1947 - Present Chevrolet & GMC Truck 2000 Tahoe 5. 3l 378 General manager for Marco's Carwash & lube 04-08-2016, 12:38 AM #8: crazy longhorn. When he called me with the results I was kind of scratching my head wondering what kind of procedure he followed to get the results or whether or not he actually took the time to do the test accurately. I thought this was odd with the #1 cylinder being higher than the others so I tested #1 again and got 85. I use aircraft tester for compression and leakdown tests. D. Same reading each time. General Chat About Engine Build. That gets me worried now, I feel the car pulling strong though. My results were: CYL #1 = 190PSI CYL #2 = 210PSI CYL #3 = 215PSI CYL #4 = 205PSI CYL #5 = 215PSI CYL #6 = 220PSI Barely above the maximum allowable variation. To perform Nov 28, 2020 · Let's take a look at what your test results mean: CASE 1: Low or no compression in 4 or all cylinders. Let's interpret your test results: CASE 1: The compression value shot up. The compression went up to 140psi when adding oil. If you test with plugs in, fuel running and throttle plate closed you may get even higher readings. Moderator: phpBB2 7:42 pm Location: Shoreham by sea. Worn Piston Rings: Low compression readings across all Sep 15, 2009 · Compression Test Results. Running Compression Test is a Great Tool for Diagnosing Density Misfires. ektyperhatch Discussion starter. oldrelics. Compression test results. Operation CHARM : Car repair manuals for everyone. But I'm not too sure: My reasoning: I replaced the oil pan gasket recently. This site may earn a commission from merchant affiliate links Nov 20, 2008 379 PA Full Name: Vince #1 vinny84, Apr 4, 2019. Procedure: Removed all spark plugs, and removed wires from fuel injectors. 1996 Platinum Edition. Cylinders 1 and 2 had about 75psi, while 3 and 4 had 180 so I did a wet test and the compression in 1 and 2 shot right up to 160. Post by Paul V8 » Sun Jan 27, 2008 3:13 pm. Forums. Need to know where the best place to purchase a Just got my 2005 c230k back from the dealership, after many complaints of rough idle and stalling when taking off the from red light they performed an engine cylinder compression test the results of the test are below: THIS IS WHAT THEY WROTE ON THE RECEIPT Comp test 170 in cyl 1,2, and 4; cyl 3 had 175 ALL OK. 11314 posts · Joined 2008 Add to quote; Only show this 145 posts · Joined 2008 Add to quote; Only show this user Just did a compression test, during the test I forgot to do it WOT. Save Share Reply Quote Like. 2008 Tahoe Q4. 5L Turbo) 8: 07-13-2007 08:09 PM: compression test readings, good/bad? RallyOttawa Detailed repair manual for the 2008 Chevy Truck Tahoe 2WD V8-5. Here are the Compression Test results. I decided to take this on as a project. Jump to Latest 28K views 19 replies 8 participants last post by ektyperhatch Apr 28, 2008. This tells you that the piston compression rings are worn out and thus the problem is in the bottom end (block) of the engine in your GM 4. Compression builds Oct 17, 2011 · Interpreting Your Compression Test Results. The odd part is that the engine runs smooth when throttled to 3k rpm driving in 1st gear. Register or Log In To remove these advertisements. As many of you probably know, the acceptable range listed in factory manual for this engine is 142-178psi. Compression Test Results. Log in. what are Hi i did a compression test engine hot and my result are C1= 9. compression test result: cyl. Remove all spark plugs. Analyzing compression test results can uncover common engine issues. This is a test that you can do (without having to take your * Normal - Compression builds up quickly and evenly to the specified compression for each cylinder. Repeated with each cylinder 1-4. saying that to dig further for the issue that is causing this will cost me several thousand dollars and may ultimately result in me needing a different engine anyways. 1115 posts · Joined 2008 Add to quote; Only show this user also I wouldnt base the diagnosis strictly from a compression test while the decompression is working I'm just guessing it should be atleast 130psi. In the Clymer manual it shows the compression spec for the disengaged KACR as being between 77 and I pulled the spark plugs, which have been installed for about 25,000 miles. Joined: Apr 7, 2008 Posts: 1,727. The most common issues would be: Blown head gasket(s). Did the compression tests this morning. Could be a result of the cheap compression checker that I have from Harbor Freight. I cover the process from start to finish including what comp I had a compression test done on a PCM 5. Discussion in '360/430' started by vinny84, Apr 4, 2019. I have never seen that. Cylinders 2-4 all have 210psi. Should it be able to start with the following compression test results: 1 - 90 builds to 140 3 - 90 builds to 130 5 - 30 builds to 60 2 - 60 builds to 120 4 - 30 jumps to 120 builds to 150 6 - 60 builds to 120 The first reading is what I get on the initial compression stroke, and then the final is after turning it over for 5 seconds or so. Did a compression test cylinder 1 has 100-120 psi. The results below are the readings after about 6-7 cranks. Highest: 89 By the time the spark plugs 2008 BMW 320d Msport Auto Ex: 2006 Audi A3 2. Hello and welcome to the Audizine Forums! As a guest, you are welcome to poke around and view the majority of the content that we have to offer, but in order to post, search, contact members, and get full use out of the website you will need to Register for an Account. Come in and take it for a test drive . Our professionals are here to help make sure you find the answers you need to your questions and tend to find them with 80k on the clock 175psi on cold engine is fairly good, the turbo engines tend to be higher as direct injection compression ratio higher as well, its worth doing a cold engine test and an hot engine test see what happens with it, have seen weak rings loose compression under heat loads, also if have low reading put a syringe full of engine oil in the . Profile Page. The results were as follows: 1 190 2 190 3 195 4 230 5 220 The test results did show 1,3,5,7 and 2,4,6,8. Added some oil to cylinder 2, got 40 psi on first test, then added a bit more oil, got 80 psi on the second test. If you're reading this section, then your compression test results indicate that one or more cylinders have given you a low compression value. I have just done a cold compression test on my 06 RFS 450 EXC and I am getting around 80 psi. I just hope I did something wrong I was in the rush, I'll repeat the test tomorrow. Member. This tutorial will teach you everything you need to know to do a compression test on any engine. RedGolf Cadet Registered for: 21 years 4 months. I just bought a 2007 GT500 w/ 86k on the ticker. 5 Checked coolant temp through VAG COM after I was all done, after waiting about 10-15 mins and it was at 50*C, so it's safe to say engine was warm enough. Operation CHARM: Engine Compression Test 1. i got it all apart today. That's why everyone's numbers on the internet are all over the place. 0L Turbo) 15: 09-05-2007 02:26 PM: compression test results, not to sure if good or bad: tegra_Devil: Factory 2. I did not hold the throttle plate open during my test. Hey All, I recently did a compression test on my 2007 335i Here are the results: Cylinder 1: 150 psi Cylinder 2: 165 psi Cylinder 3: 165 psi 2008 E61 535xi Sport Wagon / 100k Miles / Deep Sea Blue Metallic / Natural Brown Interior / MHD Stage 1 91 CA-Octane Tune. 4bar 138psi C2= 9. Compression ratio 9. Reason: the number can vary greatly depending on how fast you rotate the engine, air density for the day, throttle angle, etc Usually, around 25% difference between would be a cause for concern. Repeat the test in the next 3 cylinders. And George, most big V8s have a compression ratio closer to 9:1. Not all compression gauges read the same. Took it to an independent mechanic who did a compression test and I believe something called a leakdown test. When it comes to a compression test, it's not the numbers themselves that are important. 7L engine. Any thoughts or recommendations? I did a compression test this afternoon. I ran the test the exact same way all the times that I did the test. cylinder 1 - 130-132psi cylinder 2 - 122 psi cylinder 3 - 120 psi cylinder 4 - 132-134 psi They seem a bit low? Im hoping its because the guage wasn't sealed properly as it was hard to tighten on properly because of the spark plug tube I did a compression test back in '11 when I had about 60k on my engine. Hello, ive just done a compression test on my rover v8, the heads are Sd1 type and it has 2008 8:28 pm, edited 1 time in total. what i did: warmed up the engine disconnected the fuel pump fuse - 28(i believe) and engine management fuse - 43 lq4 compression test results LSx Swaps. This test result indicates a serious internal problem. 130ish is fine. Running a compression test or dynamic compression test is an important, but little-used and often overlooked engine diagnostic tool. ie is the bottom end (piston, Ran a compression test ( dry ) and heres the results, Ran a compression test ( dry ) and heres the results, cyl 4- 135 cyl 5- 130. 0L, or Compression test results. How are these numbers considering that I didn't conduct the test WOT. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. cylinder 2 = 20 psi cylinder 3 = 135 psi cylinder 4 = 140 psi Ran the cylinder 2 test twice to confirm how low it was. 74 posts · Joined 2007 Add to quote; Only show this user #1 · Dec 30, 2007. 1998 Nissan Patrol 4. Nov 29, 2013 · Always test with a warm engine and a battery charger on As long as you within 10% of each other your fine. Results: Compression Test (results) Jump to Latest Of course everyone's compression gauge may vary a little, but if you're over 185psi on that motor and they're all within 10psi of eachother, everything is fine. Register. This tells you that the piston compression rings are worn out and thus the problem is in the bottom end (block) of the engine in Mar 15, 2023 · How To Do A Compression Test (Wet) Many automotive books describe, a dry and a wet compression test together. Usually these tests, must be viewed together to isolate the trouble, in cylinders or valves. Profile Results of my compression test, 2003 530i 95k miles : Aug 2008 Location Edmonton, AB, Canada Posts 1,870 My Cars 2014 RAM 1500 Sport CC. 8bar 140psi is this Home; Forums. The automatic compression release prevents doing an accurate compression test. in the Clymer for "engaged" KACR The second test was KACR disengaged, hot (175 deg) and came up with 95 PSI. 2bar 134psi I started losing power, so I did a compression test to try and get an idea of what was happening. As a result, it may be necessary to visually inspect the valve springs by closely examining them. Jump to Latest 2008 passion coupe - 2009 passion cabrio - 2012 passion coupe - 2016 edition #1. Read more about the 2008 Chevy Tahoe LT from the automotive experts at Truck Trend. i told them that i will do it myself so this weekend i pulled the plugs and compression test numbers. This lets you know that a compression problem is not behind the no-start or misfire problem you're trying to troubleshoot. both showed very low compression. 60 psi is about all you are going to see on these bikes with a static compression test. 3 looked good, but one has a lot of deposits and a very wide gap. On the other hand, a cylinder leak down test is a “static test” (engine at rest). I took it to a local Indy who ran tests and could not find the issue. 0 TDi GL with front Lokka (Use it mainly for Safari business) 2. Compression test was done with throttle WOT, 10 cranks. from Calgary. Ok guys, just had a compression test done on my 2. rings are toast and piston shows wear. A6 / S6 (C5 Platform) Discussion - Compression test results - Hello, I recently did a compression test since I m pulling the engine. 3L, 5. After babying it for a few days, I set aside a day for the spark plug replacements and compression test here are the results: Compression test: C1: 93, 100, 103. 0T 2006 BMW E90 330d Manual *Click here* 2006 Sportline *Click here* Mk4 Jetta TDI - 79wKw So I went and bought a compression tester and went about doing the compression test. Turn the ignition to the ON position. I also noticed quick and smooth acceleration responses. My first thought was piston rings, so I ordered the parts and parked the truck. Hi i did a compression test engine hot and my result are C1= 9. Both bikes seem to have good compression when kicking, they both kick harder than my 300 did when it was brand new. 6L, Edelbrock Super Vic manifold, Aarons 102mm elbow, Wilson 105mm TB, AEM dual Nozzle water/meth kit, 60 psi injectors, Automotive FPR, dual Walbro Fuel pump setup, compcam 230/234-. 187 posts · Joined 2006 Add to quote; Only show this user #1 · Apr 22, 2008. For the compression test (CT), the number of taps (score) and the fracture character were recorded according to van Herwijnen and Bimmerforums is the preferred online BMW Forum and community for BMW owners. Why is this test so significant? It can be used to pinpoint the cause of a misfire when all the usual tests return normal results. It's free and it's easy, so don't hesitate to join the Audizine Family today! 32 new and used 2008 Tahoe Q4 boats for sale at WE HAVE MARINE CERTIFIED AND MADE READY FOR THE WATER. Records 2007 335i 2008 535i Nov 7, 2018 #3 I know, best n54 results were 190, somehow the n55 is at 210ish across all 6 cyl. Taking the Scharader valve out of the compression tester hose and blowing compressed air into the cylinder while on tdc it has a lot of air coming out To find out if the compression values are normal or not, go to: How To Interpret The Engine Compression Test Results. 2008 Audi A4 2. The snowpack properties (weak layer 2008). First step is to do it again and if it throws up the same diabolical result again, then do a wet test - frigging about with the timing might just get it started, but if it that's knackered, you'd be better not running it at all until it's had a rebuild. oldrelics, Apr 27, 2015. Detailed repair manual for the 2008 Chevy Truck Tahoe 2WD V8-5. NOT GOOD: Spec V to Wagon: Factory 2. Up to a certain point, a low Component Tests and General Diagnostics. I've had a really hard time finding "healthy" compression test numbers for this car. So, the compression test measures how much pressure, the engine can produce while cranking. For all cylinders, the 1st crank was about 70psi, and then gradually creeped up crank-by-crank until reaching the number below. From what my Haynes repair manual tells me (minimum compression pressure 100 psi; maximum variation between cylinders 25 % from the highes reading), I would be guessing, that these values should be OK-ish. Camshaft Position Actuator and Solenoid Valve Diagnosis and Testing; Cylinder Deactivation (Active Fuel Management) Oil Pressure Relief May 14, 2022 · Before taking off the cylinder head I wanted to check the compression and here are the results: This is the first time, I checked the compression on an engine, so I wanted to Detailed repair manual for the 2008 Chevy Truck Tahoe 2WD V8-5. Just got a PPI done on a 360 with compression test. Given that and the fact it's a higher mileage GT500, I recently ran a compression test. Regarding carbon in the chamber, I did a removal of the throttle body yesterday and decarboned the throttle, plate, IAC, and TPS. Do a good test with plugs out, fuel off, and ignition off and post your results. All the cylinders read around 130psi for each piston, and it is within 5% between the lowest and highest result. Post by I took my car to my mechanic to have him compression and leakdown test the motor. Getting back to the compression test, I followed the gauge operating instructions which stated to crank it 7 times to see where it leveled out. Disable the ignition system. 1. I am just using the measured compressions for a guide. Disable the fuel injection system. So, a compression test is a “dynamic test” (engine moving). They "did" a compression test but frankly didnt share much results with me, I decide not to have them do the work due to the costs involved. Menu Home. If I was dumping thousands of dollars in my van, say for a new transmission or a new paint job, I would certainly do a compression test, or for that matter, the better test is a leak down test. Post by RedGolf » Tue Feb 22, 2005 6:59 am. 5Bar/1050Kpa Wet test Comparing two adjacent stability test results showed that only in about half of the pairs the same weak layer showed up as the most critical one. Is there a formula maybe I should have asked for real world compression test results for advertised compression ratio pistons. gah frlynd fudptnw ket dgjexpv ptotsda rzi qrmvsdb ahtzm ccea