Big misfire issue please help
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Joined: Jun 2019
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Big misfire issue please help The beginning of the week, i finished my cam, injectors, springs, pushed, and longtube install. The car fired up and ran great. I have been breaking it in pretty good, taking it easy except for 3 or 4 quick rips. Today I fired it up, and it seemed to try to flood itself out, but i revved it up and it went away, but when i got on the road and got it above 4000 rpm, it stsrted missing. I habe no idea why. Is it a defective injector? Loose rocker bolt, ruined cam, ruined engine? Should I unplug the battery and reset the ecu? I'm freaking out and have no leads at all. Any input would be a huge help. Thankyou
You don't mention tuning in your post.
Have you tuned it? If not, I wouldn't be driving it much especially if you went bigger on injectors because you may be washing the oil off your cylinder walls.
Have you tuned it? If not, I wouldn't be driving it much especially if you went bigger on injectors because you may be washing the oil off your cylinder walls.
Teching In
Joined: Apr 2019
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Make sure you didn't melt a plug wire somehow lol. Also check all of your plugs, I've had one crack while doing headers before that didn't start arcing until a week or so after. And do you have the car tuned, or did you just install the cam/injectors and start driving it around tuneless?
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What is the nature of the “missing”. Does it seem to miss intermittently...a cylinder miss here and there? Or does the car stumble, and bog down? I’m thinking electrical/continuity/wiring issue. Because the car ran ok to your liking, before, I don’t think that the tune is your issue, although with your mods, you require a tune.
Last edited by gMAG; Jun 14, 2019 at 05:19 PM.