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Car Stuttering Before Boost?!@

imprsv

By imprsv,
in Engines & Forced Induction

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imprsv Community Regular

imprsv

Posted
Posted

Hey Fellas,

Got my new engine put in this week, and after a bit of driving around etc i've noticed that sometimes when the revs are low and building up to boost

at about 2500rpm the car stutters a bit and feels like its holding back, then once it gets past there it boogies.

Now im not sure what this could be, ive narrowed it down to a few things

Vaccum Lines

Dirty AFM as the old engine blew up and oil went everywhere

Any help would be good as my mechanic has just closed down for xmas and i was hoping to get it sorted sooner rather than later.

Any help would be sweet

Also is it normal for the engine to be a bit noisy for a bit after putting it in? It had been sitting around for about 1-2 months before it was fired up and the tappets are a touch noisy, but are quieting down after a few drives.

Trent

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TailsTails Apprentice

TailsTails

Posted
Posted

My car's done exactly the same thing since I bought it. Bet you're running higher than stock 7psi no? :P Seems like on stock boost there's no problem, at 12psi there's a small cough, and 15psi a big one. Mechanic had no idea what it was.

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