Engine compression test results Help!
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You gotta pull the fuel pump fuse out when doing it and hold the gas pedal down wot. If you don't pull the plug then you will flood it with gas. S just pull it out and try again. I only remove 1 spark plug at a time. Not sure if it matters though. Make sure you do it on a warm engine, fuel pump fuse removed, make sure the battery is cranking hard, if not hook it up to jumper cables from another car running to make sure it cranks well.
If still a variance try the wet compression test method.
If still a variance try the wet compression test method.
The only thing I didnt do was pull the fuse , Car was hot when i tested, Battery is New so cranks were good, Also I had my pedal at WOT and tried to start the car for about 10 sec then checked the PSI gauage.
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Numbers are really low but most are close together except for the 1 is a bit out of range. Over 15% difference between 1 and 4.
Original owner? As mentioned above a cold compression test will yield lower numbers. Different testers can read higher or lower numbers as well.
Do a wet test and see what they go up to. Just put a cap full of oil into each cylinder one at a time. And then repeat the compression test. It will seal rings if they are leaking during a dry compression test.
Original owner? As mentioned above a cold compression test will yield lower numbers. Different testers can read higher or lower numbers as well.
Do a wet test and see what they go up to. Just put a cap full of oil into each cylinder one at a time. And then repeat the compression test. It will seal rings if they are leaking during a dry compression test.
So If I do wet test by putting a bit of oil on each cylinder that will seal the leak ( if there is any) so after i use oil and numbers come up higher what does it mean cylinder rings are bad?
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Also here is another thing i forgot to mention, when i turn AC and i shift troght gears it feels like im dumping clutch at 6k (which im not ) car jurks a lot) so when AC on I lose a lot of power
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See the thing is the car was running fine ( it still does ) its just that i can feel a bit of power loss not like power loss when knock sensor goes bad , but still i can feel it lower, that said if there was 3mm H G then i would of never felt power loss unless something went wrong.
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From: Hartselle, AL
Looks up heat soak. It sucks on the s2000. Common problem.
I did 170-180 compression then removed the fuse and got 218-225 psi. Make sure to spin it a few times before testing to let any gas blow out. Just out of habit I remove all the plugs so I can move one to the other quickly. At least remove the coil pack plugs from all the coils.
I did 170-180 compression then removed the fuse and got 218-225 psi. Make sure to spin it a few times before testing to let any gas blow out. Just out of habit I remove all the plugs so I can move one to the other quickly. At least remove the coil pack plugs from all the coils.