|
Title: stage 3 engine stuttering at from 4000 rpm Post by: vanrhj on July 08, 2020, 02:12:51 AM Hi all
Can some please look at my log and guide me in the right direction what to do. At around 4000rpm i got this stuttering and like a misfire and i add fuel and take fuel away but the problem still exists. I up the enriched the lambda but with no luck. Please help. Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: nyet on July 08, 2020, 02:20:29 AM Did you check for non-tune related misfire problems?
Also that log format is not standard. Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: _nameless on July 08, 2020, 03:15:43 AM Hi all Get better ignition Can some please look at my log and guide me in the right direction what to do. At around 4000rpm i got this stuttering and like a misfire and i add fuel and take fuel away but the problem still exists. I up the enriched the lambda but with no luck. Please help. Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: vanrhj on July 08, 2020, 04:39:26 AM Hi
It is log from maestro. Yes I check every thing not tune related. Check plug gaps is 0.026 and COB connectors. Can over fuelling relate to this problem? Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: nyet on July 08, 2020, 09:10:15 AM If ME7L supports your ECU please use that format.
Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: mcskittle on July 08, 2020, 11:32:15 AM Mine was doing the same thing at 4000 rpm changed plugs, coils and fixed coil plug wiring and problem was solved. The wires going to the coil connectors deteriorate over time. Check all of those.
Sent from my SM-N975U using Tapatalk Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: nyet on July 08, 2020, 03:10:27 PM Can over fuelling relate to this problem? 9 times out of 10 misfires are from hw issues, unless you really fucked up your tune badly. Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: vanrhj on July 09, 2020, 05:00:48 AM 9 times out of 10 misfires are from hw issues, unless you really fucked up your tune badly. Hi Thanks i replaced the plugs this morning and will check wiring. Type of plugs u put in with gap size?Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: Blazius on July 09, 2020, 05:21:15 AM BKR7E/IX work well for most people in tuned cars.
Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: mcskittle on July 09, 2020, 06:48:33 AM I'm only stage 1 but I used double plat. Working great.
Sent from my SM-N975U using Tapatalk Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: vanrhj on July 10, 2020, 02:36:37 AM Hi
Can someone assist with information on how to test the coils with multimeter and readings? Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: nyet on July 10, 2020, 10:52:35 AM Hi Can someone assist with information on how to test the coils with multimeter and readings? No point. Just start swapping them and see if the misfires follow. Title: Re: stage 3 engine stuttering at from 4000 rpm Post by: vanrhj on July 15, 2020, 11:39:02 PM Installed new BKR7EIX plugs and misfire was gone. As i was doing more wot test and the coils getting hotter misfire returned on 4000rpm.
At least it was not so heavy misfire as before so i suspect a coil is on it way out. Will do a test early tomorrow morning in colder whether. |