subaru compression test numbers|What should Compression test at : discounter Anyways, I was pretty pleased with the compression results as they were fairly consistent across the board, but looking up the specifications just now it seems that my .
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if the compression test was done with the throttle closed you will see the numbers around 120. if it is done with the throttle wide open, which is the correct way to do it, they should be around 150. my sti measured 148-150 in cylinders 1-3 while 4 measured 50. now im putting . With a compression test, you're more looking for a difference between cylinders than what the actual pressure is. Reason: the number can vary greatly depending on how .
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. i was told by a mechanic that the only way to do compression testing was to have the car on a hoist, and have the engine lifted up somewhat, as to access the sparkplugs. Was .A stock wrx or STi has about 120 psi where I'm at. My built hybrid is only 96 psi/cylinder. 1. Award. Noticing some oil and coolant consumption on my 2009 Forester XT. Did some digging today, .
Anyways, I was pretty pleased with the compression results as they were fairly consistent across the board, but looking up the specifications just now it seems that my . As a rule, most engines should have 140 to 160 lbs. of cranking compression with no more than 10% difference between any of the cylinders. Low compression in one cylinder . To make a compression test really useful you need base line numbers from your engine and tester when the engine was broken in to have solid data to compare. I see nothing .
As a rule, most engines should have 140 to 160 lbs. of cranking compression with no more than 10% difference between any of the cylinders. Low compression in one cylinder . Requesting Compression test how-to Jump to Latest 109K views 50 replies 33 participants last post by got2boostit2 Feb 3, 2016 I did a compression test on 1998 2.5 L DOHC EJ25 engine with 109,000 miles on it. I was only able to do the test cold, as I can't start the car. Here are the Compression Test results. I removed all spark plugs, disconnected Ignition coil, and disabled fuel pump before the .
Learn how to do a compression test on an EJ series Engine.instagram:https://www.instagram.com/hm_driven/Tools usedCompression Tesr Kit: https://amzn.to/3kuYh.
What should Compression test at
What does a compression test tell me? . What's more, the analyzer prints out the results of the compression test making it easy to see and compare the actual numbers. LEAK TEST What is a "leak down" test? . Subaru WRX Forum. 3.2M posts 154.5K members Since 2001 We invite you to join our Subaru Impreza WRX and STi community to discuss engine . Weird compression test numbers Weird compression test numbers. By X35 Performance, September 16, 2007 in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX. Share . Newer Generations of Subaru discussion ; 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX ; Weird compression test .Also did a compression test, left hand side for approx 115psi on both, and right hand side for approx 120psi on both. These numbers seemed pretty darn low..the car was cold, full throttle or throttle closed made no difference. remember that the difference between the numbers is more important the the value of the numbers themselves. the conditions of the compression test will have numbers in the 120s-140s depending. so 120 across the board is the equivalent to 140 across the board on a cold vs hot motor.
Please Like, Comment, or Share this video. Also subscribe for future repair videos.If you like the vids and want to help make more: paypal.me/MrSubaru1387or . I'm having a hard time finding this EXACT setup but these tools looking promising:5/8 16mm Magnetic Spark Plug Socket - https://amzn.to/3o6R1zfStubby 3/8 Ext.
Spent 45 min performing compression test with compressiont tester today. Make sure to perform test when car is warm. . 8. Repeat the test for each cylinder and pray numbers come out good::banana: 02 WRX - Tuned by Junior 301whp Visit my install pages: . Subaru WRX Forum. 3.2M posts 154.5K members
Compression Ratio (volume ratio) = 10:1 on a N/A Subaru (if that is what it is) ignoring the closing position of the inlet valve. P1 is atmospheric or 14.7PSI (absolute). Ignoring heat of compression (i.e. T2 = T1) then P2 at top of compression will be 147PSI absolute or 132.3 PSI Gauge. With that said, a compression test's numbers dont necessarily spell disaster, it is the spread of the numbers. Yours dont look to bad, both pistons on each side are pretty close. . GD-General 2.5 Liter/Litre Factory Motor GD-Members' Journals General Subaru Discussions 2015+ STI Discussion. Top Contributors this Month View All. TC SKATES 103 . it depends on how he performed the test and the tester on the readings. to get the best results you want to get the car to op temp then remove all plugs and the fuel pump fuse then perform the test at wot for about 5 revolutions. if it isnt done at wide open throttle on a warm engine the results will vary, but you do want a consistant number across all cylinders. EJ205 Compression numbers. Jump to Latest . DIY Engine Compression Test!!! - ClubWRX Forum - Subaru Impreza WRX and STi Community and Forums . FAST RELIABLE CHEAP Pick 2 2006 STi 1990 Civic time-attack project 1990 Toyota Hilux - daily. Reactions: mosc. Save Share
I also had a CEL for a misfire in cylinder 3. 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. Highest: 103 . Hey folks, I'm still on the hunt for the famous #1 and #3 cyl misfire code. I started off with running compression test in each cylinder and inspecting the spark plugs. Here're the numbers: cyl 1 - 195 psi cyl 3 - 195 cyl 2 - 200 cyl 4 - 166 :-\ cyl #4 obviously is low on on compression and I'll . Spent 45 min performing compression test with compression tester today. 2002 WRX with 90k miles Mods: VF34 @ 16.5psi 302whp . Repeat the test for each cylinder and pray numbers come out good::banana: 02 WRX - Tuned by Junior 301whp . Subaru WRX Forum. 3.2M posts 154.5K members Do a leakdown test. you hook up some compressed air to each spark plug hole and a gauge will show you the % of leakage. the air will leak through whatever component is bad. so if you hear or feel air coming from the throttle body/air filter housing/intake, you have a intake valve leaking. if its coming from the tailpipe/exhaust - exhaust valve .
Did compression test the other day. I got 165-175 across the 4 cylinders cranking and around the 210-220 running. Whats the go with the high numbers running? I thought it was supposed to test between 50-80% of the cranking number? Also what numbers have you guys been getting? Ive searched and only found one other fa20 test.. Put the compression test adapter into the engine's first cylinder. Look down on the engine to figure out which cylinder is closest to the front of the engine. Note the circular cylinders and the timing belt on the engine’s front. . The needle on the gauge should stop moving and point to a number. If it doesn’t stay in place, crank the .
Our mechanic (whom I trust) was hoping it was just a sensor since one of them was full of carbon but today he ran a compression test and found that the number 4 cylinder is shot and has no compression. He doesn't think it is the head gasket. . A. Would nicely pleading with Subaru for goodwill get me anywhere? B. Is it worth spending 00 . 2.0l WRx Compression test. Newbies & FAQs. Welcome to the North American Subaru Impreza Owners Club: Sunday October 6, 2024: Home: Forums: Images: WikiNASIOC: Products: Store: Modifications . I've seen upwards of 150psi but actual numbers vary considerably so as long as they're within 7psi across all the cylinders. 125psi is a little low . The mechanic recommended that he do the compression test again since he will be in there anyway and he would confirm if he needed to do a leakdown. He said if a leakdown was necessary they would not charge for the compression test time. I said fair enough and let him go at it. Returned numbers: Cylinder 1: 100 Cylinder 2: 110 Cylinder 3: 110 . The individual compression number is far less important than all cylinders being relatively similar. Yes, factory service manual compression numbers will assume throttle plate open and all plugs removed. But if you test all under the same conditions (I only remove one plug at a time, and don't touch the throttle), the comparison will still be .
I just wanted to share these dry compression test results with the community for comparison sake. Compression test was done since I was switching out the spark plugs on the car. A wet compression or leak-down test was not done. Cylinder 1 - 150 psi Cylinder 2 - 150 psi Cylinder 3 - 153 psi Cylinder 4 - 144 psi Car is a 2001 Forester S 2.5L N/A. How to identify what is wrong with your car when doing a compression test: fastlanerex: Service & Maintenance: 7: 06-30-2007 09:42 AM: Anyone in the Chicago NW Suburbs have the equipment/know how to do a compression test: Saab 92xAero: Mid West Subaru Owners Club Forum -- MWSOC: 2: 03-13-2007 09:31 AM: How do you get the throttle .
Edit: Chilton doesn't give the number for the earlier EA's that I can see. A 9.0 Carbureted EA-82 , the number is 161lbs@350 rpm. A SPFI is 168psi, due to the .5 higher compression ratio, probably. Edited December 3, 2009 by Quidam
High compression test numbers. 2001 N/A EJ25
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subaru compression test numbers|What should Compression test at