Compression?
A 20lb difference is pretty large. As it was said, the most important thing is that they're all close to the same. If the test is done with the throttle open as it should be, the number will be higher. With the throttle shut it will be lower. Even battery condition and cranking speed will have a small effect. Doing the test will all spark plugs removed will give a higher number. What was the original problem and what effect did the oil have on compression.
Last edited by I hate cars; Feb 11, 2012 at 11:17 AM.
You should include a link to your original post. Now that I've found it, you have other problems. 125 psi should allow it to start. More importantly the car would not start and not continue to run if it were compression. The faster the engine turns the more compression its going to have so once it starts it should stay running. 125 or 160psi should be enough to run. If compression was the main problem you should see misfire codes whenever the car was idling.
If it was running fine with no prior symptoms and just died and had low compression I would check that it didn't jump a tooth on the timing belt. Make sure vtec is not engaged but I believe it would still start even with it engaged. Fuel fouling the plugs while cranking is usually low compression or ignition timing way off. If it were ignition you would have at least an occasional backfire, pop, or kickback while trying to start it. If by fuel fouled you mean they were just wet with fuel, thats normal if the engine does not start. Hold the throttle all the way to the floor when starting, the will shut the injectors off and put it into clear flood mode.
More details would be nice. Does it make any noise when cranking over, does it turn over faster than normal, does it try to start or backfire?
If it was running fine with no prior symptoms and just died and had low compression I would check that it didn't jump a tooth on the timing belt. Make sure vtec is not engaged but I believe it would still start even with it engaged. Fuel fouling the plugs while cranking is usually low compression or ignition timing way off. If it were ignition you would have at least an occasional backfire, pop, or kickback while trying to start it. If by fuel fouled you mean they were just wet with fuel, thats normal if the engine does not start. Hold the throttle all the way to the floor when starting, the will shut the injectors off and put it into clear flood mode.
More details would be nice. Does it make any noise when cranking over, does it turn over faster than normal, does it try to start or backfire?
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