Progressively Worse Misfire; Need Help
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Progressively Worse Misfire; Need Help
I have DW1300s running E85 with a Double Pumper and BBX. I have a misfire that is getting progressively worse. I thought it was the fuel trims being whacked out but now it's really bad and I've been running a MAP that ran very well just a week ago.
I pulled the injectors thinking they may be gunked up, but they were clean after 6 months on E85 only. I pulled the in-line fuel filter and nothing there. I pulled the plugs and they all look decent. I re-set the fuel trims on the ECU by puling the #2 fuse (7.5A).
The car is running so rough I don't think I should drive it. I keep getting P430 trouble codes. It sound like a Subaru boxer motor when you rev it slightly at idle and the whole car shakes.
I need to get work tomorrow and I can't figure out what to do. I thought about putting the stock injectors back in the car but I just filled the tank with E85 and I don't have a map for the stock injectors.
Any ideas? Bad injector???? Will it hurt to drive the car at cruise if one cylinder is running lean?
Thanks
I pulled the injectors thinking they may be gunked up, but they were clean after 6 months on E85 only. I pulled the in-line fuel filter and nothing there. I pulled the plugs and they all look decent. I re-set the fuel trims on the ECU by puling the #2 fuse (7.5A).
The car is running so rough I don't think I should drive it. I keep getting P430 trouble codes. It sound like a Subaru boxer motor when you rev it slightly at idle and the whole car shakes.
I need to get work tomorrow and I can't figure out what to do. I thought about putting the stock injectors back in the car but I just filled the tank with E85 and I don't have a map for the stock injectors.
Any ideas? Bad injector???? Will it hurt to drive the car at cruise if one cylinder is running lean?
Thanks
Last edited by delkat; Dec 5, 2010 at 06:01 PM.
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I have DW1300s running E85 with a Double Pumper and BBX. I have a misfire that is getting progressively worse. I thought it was the fuel trims being whacked out but now it's really bad and I've been running a MAP that ran very well just a week ago.
I pulled the injectors thinking they may be gunked up, but they were clean after 6 months on E85 only. I pulled the in-line fuel filter and nothing there. I pulled the plugs and they all look decent. I re-set the fuel trims on the ECU by puling the #2 fuse (7.5A).
The car is running so rough I don't think I should drive it. I keep getting P430 trouble codes. It sound like a Subaru boxer motor when you rev it slightly at idle and the whole car shakes.
I need to get work tomorrow and I can't figure out what to do. I thought about putting the stock injectors back in the car but I just filled the tank with E85 and I don't have a map for the stock injectors.
Any ideas? Bad injector????
Thanks
I pulled the injectors thinking they may be gunked up, but they were clean after 6 months on E85 only. I pulled the in-line fuel filter and nothing there. I pulled the plugs and they all look decent. I re-set the fuel trims on the ECU by puling the #2 fuse (7.5A).
The car is running so rough I don't think I should drive it. I keep getting P430 trouble codes. It sound like a Subaru boxer motor when you rev it slightly at idle and the whole car shakes.
I need to get work tomorrow and I can't figure out what to do. I thought about putting the stock injectors back in the car but I just filled the tank with E85 and I don't have a map for the stock injectors.
Any ideas? Bad injector????
Thanks
Last edited by HR2L; Dec 5, 2010 at 06:06 PM.
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I can almost without doubt tell you its your 1300cc injectors. Your not the only person with this as an issue, little alone in the bay area. I know a few people that have been having just an awful time with DW's 1300cc injectors and there new or updated injectors in general. Really glad I never went to 1300's now little alone there changed or updated injectors (1000cc new version have been a hit or miss as well). I bet you find some first gen 1000cc's and retune for E-85 your misfire issues go away completely. Been thinking about going E-85 now, but if I do it will be doing FiC's 2150's with the double pumper. Do you still have your old 1000cc's?
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I had an identical problem to what you are experiencing and it turned out to be an injector/or plug and play adapters being bad. Had the injectors cleaned and new plug and play adapters installed and the problem was fixed.
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Im having similar problem as you are, my car would misfire really bad under very like throttle when you rev it up and i am also running DW1300 injectors. i'm kinda leaning towards the injector being bad?
#13
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Do what MRFred said. You can also try moving your coils around as well. However I would be surprised if it is not the injectors. Pull them out ASAP. It is not going to improve.
Money saved on injectors is not really money saved.
Money saved on injectors is not really money saved.