Cylinder contribution test opinion??
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01-24-2016, 11:47 PM
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Cylinder contribution test opinion??
Soo about a month ago I was driving and I had a misfire pulled over immediately pulled codes I had P2146-FUEL INJECTOR GROUP 1 SUPPLY VOLTAGE CIRCUIT.
Cleared the code. Started up misfire was gone and kept driving home with my eye on the egt gauge. Ohmed all 6 injectors at the Vc connector .5 on all except cyl 3 which was .8 . Ive been busy it's been a few weeks since then. And it really has been running fine beside a slight vibration at idle which I was chalking up to the freezing temps we've had.
Finally hooked up the scanner again and ran a cylinder contribution test and these are my results
#1 105% #5 92% #3 102% #6 95% #2 106% #4 95%
I found it odd that cyl 1,2,3 are all high and the the percentages are hi,lo,hi,lo.
I ordered the tools to do a injector return test. I'm at 117k miles I've had the fass on for about the last 15k
What are your thoughts?
Cleared the code. Started up misfire was gone and kept driving home with my eye on the egt gauge. Ohmed all 6 injectors at the Vc connector .5 on all except cyl 3 which was .8 . Ive been busy it's been a few weeks since then. And it really has been running fine beside a slight vibration at idle which I was chalking up to the freezing temps we've had.
Finally hooked up the scanner again and ran a cylinder contribution test and these are my results
#1 105% #5 92% #3 102% #6 95% #2 106% #4 95%
I found it odd that cyl 1,2,3 are all high and the the percentages are hi,lo,hi,lo.
I ordered the tools to do a injector return test. I'm at 117k miles I've had the fass on for about the last 15k
What are your thoughts?