1 bank running rich
#1
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1 bank running rich
I need some help
I put new heads, cam and headers on and now bank 1 is running super rich, ltft on that bank is at 25% and stft keep rising.
so far I have tried 4 different o2 sensors that are all new, checked ohms on the injectors, cleaned the injectors, swapped injectors from bank to bank, pulled the intake to make sure it wasn't leaking, I think the grounds for the o2 sensors are on the back of the head and I changed locations and it still does it. I changed out the header gasket, tried all new plugs, ran it with the o2s unplugged and did a fuel trim relearn.
its firing as all the plugs on that bank are a black soot
not sure what else to check
any help would be greatly appecitated.
thanks, Mitch
I put new heads, cam and headers on and now bank 1 is running super rich, ltft on that bank is at 25% and stft keep rising.
so far I have tried 4 different o2 sensors that are all new, checked ohms on the injectors, cleaned the injectors, swapped injectors from bank to bank, pulled the intake to make sure it wasn't leaking, I think the grounds for the o2 sensors are on the back of the head and I changed locations and it still does it. I changed out the header gasket, tried all new plugs, ran it with the o2s unplugged and did a fuel trim relearn.
its firing as all the plugs on that bank are a black soot
not sure what else to check
any help would be greatly appecitated.
thanks, Mitch
#2
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anyone?
I am gonna work on it tomorrow and would like some other things to try.
I have checked compression, power and ground at o2, power to coil, checked all the fuses.
tomorrow I am gonna check power to each injector along with wiring.
if that all checks out then I am gonna try and borrow another set of injectors and see what that does, if that doesn't help then I might have to try another computer to see if my driver went bad
I am gonna work on it tomorrow and would like some other things to try.
I have checked compression, power and ground at o2, power to coil, checked all the fuses.
tomorrow I am gonna check power to each injector along with wiring.
if that all checks out then I am gonna try and borrow another set of injectors and see what that does, if that doesn't help then I might have to try another computer to see if my driver went bad
#4
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yup I have a base tune, even tried some other tunes from last year. if it was the tune I would think both banks would be running the same?
I checked all power to the injectors this morning and even listened to the injectors with a bar with the truck running and I can hear them pulsing but the truck is still running rich on the one bank.
I even swapped all coils and wires from bank to bank this morning.
not really sure what else to check. the temp sensor seems to be operating well and I unplugged it with the truck running and the truck died so don't think its the ETS. its new with only one season on it.
I checked all power to the injectors this morning and even listened to the injectors with a bar with the truck running and I can hear them pulsing but the truck is still running rich on the one bank.
I even swapped all coils and wires from bank to bank this morning.
not really sure what else to check. the temp sensor seems to be operating well and I unplugged it with the truck running and the truck died so don't think its the ETS. its new with only one season on it.
#6
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I have swapped everything from bank to bank with no change tho. the problem should have followed with what I have checked.
I didn't check compression on that bank tho.
I just checked pushrod length and what I am running is fine.
I will get the compression tester again and check the other bank aswell
I didn't check compression on that bank tho.
I just checked pushrod length and what I am running is fine.
I will get the compression tester again and check the other bank aswell
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#8
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I am waiting to hear back from a buddy if I can borrow his leak down tester.
I cant hear a loose rocker but checking them is on my list of things to do.
are you talking about feeling around the exhaust for leaks? its cold out here and I was able to see a leak down stream from the o2 and I fixed that but cant see any other leaks
I cant hear a loose rocker but checking them is on my list of things to do.
are you talking about feeling around the exhaust for leaks? its cold out here and I was able to see a leak down stream from the o2 and I fixed that but cant see any other leaks
#10
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I have a computer from a 03 dbw, can I put a licence in it and try it on my truck or is there some differences in the computers from those years?