Part throttle/Full Throttle Misfires

K-Series Programmable ECU installation questions / support issues
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Dublocivic
Posts: 15
Joined: Wed Dec 13, 2017 7:05 pm

Part throttle/Full Throttle Misfires

Post by Dublocivic » Tue Nov 27, 2018 11:32 am

So I am going through the process of road tuning my K24a2/EG swap and have started to run into some misfiring/pops/cracks that started at part throttle and is now prevalent at full throttle. Nothing jumps out in the logs that would be indicative of a failing sensor (TPS/O2/MAP), I also have no codes associated to the misfiring. This problem is progressively getting worse and I am curious if anyone else has experienced an issue that is similar? Tuner is suggesting it may be the injectors (new 1500cc DWs), Ill check those along with back probing the TPS to make sure the voltage is right just to be sure. Would a failing TPS cause symptoms like this? Does anyone have any other ideas or things to check?

Thanks!

AREA876
Posts: 388
Joined: Tue Jun 15, 2010 6:14 am
Location: Jamaica

Re: Part throttle/Full Throttle Misfires

Post by AREA876 » Tue Nov 27, 2018 11:45 am


AREA876
Posts: 388
Joined: Tue Jun 15, 2010 6:14 am
Location: Jamaica

Re: Part throttle/Full Throttle Misfires

Post by AREA876 » Tue Nov 27, 2018 11:47 am

Need to see calibration and datalog of the problem

Dublocivic
Posts: 15
Joined: Wed Dec 13, 2017 7:05 pm

Re: Part throttle/Full Throttle Misfires

Post by Dublocivic » Mon Dec 03, 2018 5:24 pm

FWIW figured it out, the injectors were partially clogged. I cleaned them out and the issue is resolved. Morale of the story, use a 30 micron filter or finer. 40 is not fine enough if you have any trash in the tank.

Thanks!

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