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Engine misfire

Posted: Fri Feb 22, 2019 5:33 am
by liaoyuan12580
I use + 6psi program. When the weather is very cold. Engine temperature is very low. My Engine misfire. I asked for help. Thank you very much.

Re: Engine misfire

Posted: Fri Feb 22, 2019 10:46 am
by Spunkster
Can you post your calibration as well as a datalog showing the problem?

Re: Engine misfire

Posted: Fri Feb 22, 2019 10:54 pm
by liaoyuan12580
Spunkster wrote:
Fri Feb 22, 2019 10:46 am
Can you post your calibration as well as a datalog showing the problem?
I don't have any fault codes.

Re: Engine misfire

Posted: Fri Feb 22, 2019 11:10 pm
by liaoyuan12580
Spunkster wrote:
Fri Feb 22, 2019 10:46 am
Can you post your calibration as well as a datalog showing the problem?
It lost power and I had to restart it.

Re: Engine misfire

Posted: Sun Apr 14, 2019 7:34 pm
by ElpacoSV
Hi everyone, I'm getting the same issue. I'm running the +6base map as well. I only use Shell 91. I tried getting back to stock to see if it was Hondata issue and...I got the misfire code as well.

What I notice is that is only when is cold and humid...I check spark plugs and coils and they are fine. Injection perhaps? How long of data acquisition do you need?

Re: Engine misfire

Posted: Mon Apr 15, 2019 11:19 am
by Spunkster
long enough to show the issue

Re: Engine misfire

Posted: Mon Apr 15, 2019 5:04 pm
by ElpacoSV
data is available: https://we.tl/t-NyzoCr1BZC

let me konow if you have it!

Re: Engine misfire

Posted: Wed Apr 17, 2019 7:14 pm
by ElpacoSV
Any news?

Re: Engine misfire

Posted: Wed Apr 17, 2019 10:41 pm
by Syntek
Hi guys,

Had a similar issue in cold environments. Have a read:

https://www.civicx.com/threads/p0301-mi ... r-1.14271/


TL;DR, had faulty injectors and had them warrantied out.

Re: Engine misfire

Posted: Thu Apr 18, 2019 9:32 am
by Spunkster
Can you please attach your calibration and a Datalog to your post here?

Re: Engine misfire

Posted: Fri Apr 19, 2019 4:41 am
by ElpacoSV
Already did :-) datalog can be accessed by WeTransfer. File is too large to be attached here.

Re: Engine misfire

Posted: Fri Apr 19, 2019 9:21 am
by Spunkster
You can trim the Datalog down to make it much shorter and much smaller file by right clicking and selecting a start and end point then saving the Datalog with a new name. You must also include the calibration. Please post them here.

Re: Engine misfire

Posted: Sun Jul 21, 2019 8:41 pm
by ElpacoSV
hope this help. I'm using calibration Hatch Manual, but my car is a Sport Manual. I don't know if this can affect anything...

Re: Engine misfire

Posted: Mon Jul 22, 2019 10:30 am
by Spunkster
Please post the calibration used to record the Datalog.

Re: Engine misfire

Posted: Mon Jul 22, 2019 11:41 am
by ElpacoSV
2017 civic Hatch MT +6PSI high octane
Rev hang = OFF