Valve float under high boost?
Thread Starter
Instructor
Joined: Jun 2016
Posts: 229
Likes: 3
From: Rochester NY
Valve float under high boost?
So i just got done doing a smaller pulley, meth and injectors on my car. Went out to make sure everything was running properly before i bring the car to the tuner and at about 4k rpm under 3/4 throttle it sounds as if the car is misfiring or almost exactly like its 2 stepping. Is this valve float caused by the higher boost pressure or am i looking at something much worse?
Drifting
Joined: Dec 2003
Posts: 1,755
Likes: 88
From: Pearland Texas
Well first question is was it tuned with new pulley and injectors? And since you said before you take it for tuning, I'd guess its due to all the fuel causing it to fall on its face. Get it tuned first before thinking something else is wrong.
Last edited by inspector12; Aug 6, 2017 at 06:04 PM.
Burning Brakes
Joined: Mar 2014
Posts: 1,238
Likes: 203
From: Lexington South Carolina
its running lean. stay out of boost until you get it tuned
Drifting
Joined: Dec 2003
Posts: 1,755
Likes: 88
From: Pearland Texas
It could be lean, but I think its Pig rich! New injectors (bigger) with out the correct inj. tables alone will cause that let alone he mentioned Meth. Which he didn't say, but I'm guessing that's new as well. Get it tuned and see how it runs take you several sets of plugs to change and check during tuning etc... GL!
