GuyzVette
Well-known member
I'm starting to get a little frustrated, and could use some advice as to what to check next....
1994 LT1 M6.
Coming off a fresh engine rebuild because I burned up some rocker bearings, everything was running smoothly. Just recently, though, I've noticed that at wide open throttle, the engine gets to be what can best be described as "garbled". It runs really smooth at normal driving, but at the high RPMs starts to show the problem. And at interstate on-ramps, if you get on it, it is really bad.
So, plugs and wires are all new. Since the problem, I have replaced the fuel pump and in-line fuel filter. I've put a fuel pressure gauge on, and driven it, trying to tell if there's an inconsistency, but it's hard to tell. It looks a little suspect.
So here's my question:
Next stop is going to be to take it to a dealer for a diagnostic. Does anyone have any idea of anything else to try that is easy for a not-so-greasy mechanic? Or is it time to get an expert to analyze the problem?
Thanks in advance for your help!
-Guy
1994 LT1 M6.
Coming off a fresh engine rebuild because I burned up some rocker bearings, everything was running smoothly. Just recently, though, I've noticed that at wide open throttle, the engine gets to be what can best be described as "garbled". It runs really smooth at normal driving, but at the high RPMs starts to show the problem. And at interstate on-ramps, if you get on it, it is really bad.
So, plugs and wires are all new. Since the problem, I have replaced the fuel pump and in-line fuel filter. I've put a fuel pressure gauge on, and driven it, trying to tell if there's an inconsistency, but it's hard to tell. It looks a little suspect.
So here's my question:
Next stop is going to be to take it to a dealer for a diagnostic. Does anyone have any idea of anything else to try that is easy for a not-so-greasy mechanic? Or is it time to get an expert to analyze the problem?
Thanks in advance for your help!
-Guy