sputter at 3500rpm

[typhoon fever]

OK so this started last night after a run from 0-100
when i get into boost at 3500rpm the engine sputters pretty bad
but it doesn't do it when im in park
i need some help thanks

 

[syty9933]

Re: sputter at 3500rpm

OK so this started last night after a run from 0-100
when i get into boost at 3500rpm the engine sputters pretty bad
but it doesn't do it when im in park
i need some help thanks

are you overboosting?

 

[BoostedSUV]

Re: sputter at 3500rpm

What's your spark plug gap set at? Could be blowing out the spark... I had this issue with my truck and I tightened up the plug gap and it went away.

 

[gkrcr882]

Re: sputter at 3500rpm

are you overboosting?

X2. Do you have an aftermarket boost gauge? When the ECM detects overboost and calls cease-fire, the truck will fall on its face like you're describing.

 

[syty9933]

Re: sputter at 3500rpm

maybe you knocked a vacum line loose or wastegate rod stuck.

 

[typhoon fever]

Re: sputter at 3500rpm

its not over boosting.
and it was running fine for weeks until that last pass so i dunno bout the plugs.
i just want some advice before i start throwing money at it

 

[typhoon fever]

Re: sputter at 3500rpm

ill go check the vac lines tomorrow