Compression test results.
10-08-2006, 11:36 PM
#14
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Originally Posted by XXX240,Oct 8 2006, 10:35 PM
the test varies a lot if the motor is cold or hot, it also depends on if you did the test on wide open throttle or not...
IMO your car is fine...
IMO your car is fine...
It was done WOT also.
10-09-2006, 07:03 AM
#15
A compression test is only useful for showing variations between the cylinders as an absolute measurement of engine wear, it's not all that. A leakdown test is more accurate to predict wear.
What drove the testing, did you run it low on oil or are you getting a misfire code?
What drove the testing, did you run it low on oil or are you getting a misfire code?
10-09-2006, 05:52 PM
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I was getting a misfire code and random misfires. Good News!
Like I posted about the previous owners crappy VAFC II install, we took it out and returned it to stock. That seemed to clear up the misfires but I got a code P0138 and P0139 These are for the 02 sensors. The previous owner also installed an 02 simulator. We are thinking that he screwed that up too and are going to check the wiring on it also. Could that be tripping the light and causing these codes to show up?
I am just glad I don't have the misfires anymore. I can fix the sensors hopefully by fixing the wiring job. If that is not the problem do I just replace the sensors? I have a test pipe so I will have to get some type of 02 cheater.
Like I posted about the previous owners crappy VAFC II install, we took it out and returned it to stock. That seemed to clear up the misfires but I got a code P0138 and P0139 These are for the 02 sensors. The previous owner also installed an 02 simulator. We are thinking that he screwed that up too and are going to check the wiring on it also. Could that be tripping the light and causing these codes to show up?
I am just glad I don't have the misfires anymore. I can fix the sensors hopefully by fixing the wiring job. If that is not the problem do I just replace the sensors? I have a test pipe so I will have to get some type of 02 cheater.
10-09-2006, 06:52 PM
#17
If the wiring's F'd up replacing the sensors won't fix that. Do you have a scanner that can read data streams? That'll show you what the sensors are putting out. What code is it? Convertor efficiency codes are to be expected with a test pipe and don't necessarilly mean there's anything wrong with the O2. If the primary O2's giving you codes, it'll make the car run shitty so, that needs to be fixed.
10-09-2006, 07:14 PM
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Originally Posted by Ek9,Oct 9 2006, 06:52 PM
If the wiring's F'd up replacing the sensors won't fix that. Do you have a scanner that can read data streams? That'll show you what the sensors are putting out. What code is it? Convertor efficiency codes are to be expected with a test pipe and don't necessarilly mean there's anything wrong with the O2. If the primary O2's giving you codes, it'll make the car run shitty so, that needs to be fixed.
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