Random misfire from cranking

K-Series Programmable ECU installation questions / support issues
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Random misfire from cranking

Post by dc5itr01 » Thu Jan 03, 2019 6:46 am

I have PRC kpro 4.
Since the upgrade, i have random startups with a misfire and engine light. It happens on average every 4 starts.
Hot or cold makes no difference.
It happens as follows,
Turn on ignition, crank, and engine starts. But with immediate engine light and bad misfire. Sounds like 3 cylinders working.
This happens with or without hondata usb connected.
I then have to off ign 1 or 2 times before it starts without error.
Logging shows nothing. Live view shows nothing.
I spoke to a buddy who has same problem since upgrade.
ANDREW please chime in here if u reading this.

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Re: Random misfire from cranking

Post by Spunkster » Thu Jan 03, 2019 10:13 am

Post your calibration and a datalog showing the issue.

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