tuffass

I installed my ms4 a few weeks ago and although I've only driven it a handfull of times it sometimes is really jerky when it gets into the higher rpms. Not like its hitting the rev limiter and its not all of the time but quite a bit. Now before I installed my cam, my car was running like **** because my 02's went out but I replaced them. However because of that I know it was running pretty rich so could that have anything to do with this?
I talked to a really good tuner locally and he suggested that i should check the crank position sensor before anything but WTF is that? Dont recal messing with that when I swapped the cam unless it was when I removed the oil pump and crank gear.

Does any1 have any suggestions? I'd rather not get my tune until I figure this out so I'm not having to repeatedly go back if they cant fix it by tuning.

pHEnomIC

iTrader: (14)

Your a/f being way off could cause that problem. There are a lot of problems. Are you sure that you didnt advance or retard your cam by accident?

tuffass

100 percent Positive... That was the number one thing I made sure I got correct. Like I said, Its noy all the time wither. I;veriped throgh 1,2 and 3 sevral times wrapping it out until it hits the limiter.

The A/F is more than likely still way off because I ran on bad 02's for over a year... And just replaced them a wek before the cam swap.

tuffass

??? A lot of problems?

pHEnomIC

iTrader: (14)

I mean a lot of problems it could be.

I wouldn't drive it like that a lot, can't be good for the engine.... Let me think .... Could even be valve float or something, you changed the springs correct?

tuffass

Yes I changed the springs twice... This was my first swap and my dumbass forgot to seat the valve seals down the first time I put them back on. They'r good now though.

tuffass

Any1 else have any input?

ArcticZ28

iTrader: (14)

Have you looked at your plugs since running so rich?

BTW, going WOT without a tune is just asking for trouble.