Stutter under WOT

[yekrahs]

Okay I have searched I still can't narrow it down. Basically my car is studdering under WOT, but at like 50% its fine. I replaced the spark plugs, and wires.it was fine for like 20 seconds of driving after I installed the new wires and then it starts studdering again. Any help would be appreciated.

 

[cool_g_83]

Have you checked for boost leaks?

 

[yekrahs]

yes there are absolutly no boost leaks

 

[cool_g_83]

When you pulled your plugs, what color were they (black, white, other)?

Also, what type of spark plugs did you put in?
Did you gap them properly?

I had a stuttering problem and my fix was putting in new plugs that were properly gapped.
Goodluck tho

 

[95blackGsTurbo]

Make sure they are either NGK BPR7ES or NGK BPR6ES gapped from .028" to .031"

 

[yekrahs]

yes they are bpr7es's gapped at 28...they were like smoke colored....my car was running lean, but its been richened out since so they are a little white

 

[spyderturbo007]

Did you make sure that there wasn't any oil or water in your spark plug wells? I had this problem about 2 years ago, it was a slight "hiccup" at higher throttle. Ended up being condensation in the spark plug wells. I just popped the hood, pulled the plug wires and let the car sit in the sun for about an hour on a dry day. Reinstalled the wires and everything has been fine ever since.

 

[abaum565]

Also check your fuel filter they can cause some pretty wierd things.

 

[nickschmit25]

I had the same problem and today i took out my fuel injectors to find that i had a torn lower o-ring. changed it and it runs perfect now. So check your o-rings and blow out your injectors and fuel rail

 

[rocafellafw]

I'm having the same problem. I'm gonna try checking the injectors, rail, and replace the fuel filter again because my problem started after replacing my fuel filter.

 

[spyderturbo007]

You guys realize that this thread is 3 years old and I'm sure he solved his problem by now.

 

[nickschmit25]

we realize that but if someone is having the same problem and read this it could fix theres too so they don't have to write up a new thread