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

 

What do your spark plugs look like? Oil fouled? Sooty black?

Rick

 

I dont know i havent pulled any yet. I replaced them when i did the job. But thats a great idea. I dont know why I didn't think of that

 

How about following up on your other ideas.
Like pull the valve covers, etc.

 

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.

 

This!

 

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?

 

You mentioned injectors in your list. As others said, if you but bigger injectors in it. Don't run it anymore. You're gonna kill it.

 

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.