Check engine light woes
Joined: Oct 2007
Posts: 489
Likes: 13
From: Lincoln, CA
Milage on the car? I replaced my 170k mile injectors with some lower milage used ones and it fixed all my misfire codes.
s2klariat - Why do you say leave the plugs in the other 3 cylinders? I only see that making the starter work harder to spin the motor.
I don't see there being a huge difference in compression results regardless of how you test. I just did a test on mine two days ago. Hot motor, no plugs, fuel pump fuse pulled, throttle closed and 15 revolutions per hole. It blew 225-215-225-220. What you're looking for is consistency across all four cylinders. As long as the test conditions were the same across all cylinders it will alert you to a problem. I would be somewhat concerned with that 195 but not to the
point yet. A leakdown test would be helpful.
s2klariat - Why do you say leave the plugs in the other 3 cylinders? I only see that making the starter work harder to spin the motor.
I don't see there being a huge difference in compression results regardless of how you test. I just did a test on mine two days ago. Hot motor, no plugs, fuel pump fuse pulled, throttle closed and 15 revolutions per hole. It blew 225-215-225-220. What you're looking for is consistency across all four cylinders. As long as the test conditions were the same across all cylinders it will alert you to a problem. I would be somewhat concerned with that 195 but not to the
point yet. A leakdown test would be helpful.
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Joined: Feb 2010
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The motor was hot when i did the test and i left the spark plugs in besides the cylinder that i was testing. Gas pedal to the floor and i tried to do it with the fuel pump fuse pulled but it wouldnt crank over at all so i plugged it back in and i was able to crank it. I have also taken pictures of the spark plugs which i will post right now
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Quick question, I heard if the cel is blinking then I shouldn't drive the car. My cel light is blinking but it is blinking the cel code at me. I don't know if that is the blinking of the cel when it's really really bad problem going on or I accidentally messed something up when I pulled the code with a paper clip and some how jammed it to where it is constantly blinking the code at me.
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Joined: Jul 2002
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From: Long Island, New York
Blinking while running = bad misfire. You should not drive it.
Compression test should be done with ALL plugs out.
I would do a leakdown test. It will show valves that are bent a trace, compression will not.
Swap parts. re-scan it, see if you can get the misfire to move to cyls 1 and 4.
Compression test should be done with ALL plugs out.
I would do a leakdown test. It will show valves that are bent a trace, compression will not.
Swap parts. re-scan it, see if you can get the misfire to move to cyls 1 and 4.
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Joined: Jun 2009
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yeap blinking CEL means that ur engine is running so bad that there is catastrophic damage happening to ur cat and it will over heat the cat and melt the internals and only takes bout a min to destroy it...also reason u floor the throttle is so the cyl ur testing get max amount of air in it...