My 99 GT with 4.6 is bucking like a bronco. I'm at the track and it was running strong with my new Procharger install. I lost power and determined that one of the o-rings on top of the injector was pushed out from the fuel rail. I installed new o-rings and re-seated the rail. It now is just surging and bucking when I drive it. It feels like it is not getting fuel and then getting fuel. Weird. Everything looks correct. Any suggestions? I bled the fuel rails in-case air was in the lines. I have two days here at VIR and I sure want to run some more!
Bucking Mustang Gt
- Thread starter VIRstang
- Start date
look for air/vacuum leaks. You may have blown a hose off after the procharger which is allowing un-metered air in/out. That would screw up the AF, and could certainly cause the problem you are having. Especially where you just installed the system, it is likely you haven't found all the connections that need to be clamped and secured. My 2.3 with 20psi had a hose clamp on nearly everything connected to the engine.
trombonedemon
Well-Known Member
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