Fuel Injected motor...miss from 1-3K

Eric Merryfield · 06-10-2012, 10:14 PM

My magnum motor, is acting like a it has a holley 750 with a 6.5PV and a big cam, but a 2.5PV in and instant fix...Truck is....stumbling bad, from off idle(idle is fine, till up around 3k....above that seems ok, smooths out. It almost seems like its under a rev limiter/two step when its doing it popping.

Oh yeah it does it under load and in nuetral.

To say its a challenge to stage it this way, is a understatement!

Was running fine 2 weeks ago, nothing changed. It did slow down 3 plus MPH and a bit of et also, so it is likely a issue across the board. Motor is fresh.

I have read the carb related 3k and above. Wasn't sure if anyone had such an issue with a fuel injected motor in the past. Its a fast system, a old system, with a msd digital 6.

Something may have become dislodged during 900 plus mile tow back to me. Suggestions?

Thanks

Eric

06-10-2012, 10:14 PM	#1
Eric Merryfield Senior Member Join Date: Apr 2008 Posts: 872 Likes: 1 Liked 502 Times in 130 Posts	Fuel Injected motor...miss from 1-3K My magnum motor, is acting like a it has a holley 750 with a 6.5PV and a big cam, but a 2.5PV in and instant fix...Truck is....stumbling bad, from off idle(idle is fine, till up around 3k....above that seems ok, smooths out. It almost seems like its under a rev limiter/two step when its doing it popping. Oh yeah it does it under load and in nuetral. To say its a challenge to stage it this way, is a understatement! Was running fine 2 weeks ago, nothing changed. It did slow down 3 plus MPH and a bit of et also, so it is likely a issue across the board. Motor is fresh. I have read the carb related 3k and above. Wasn't sure if anyone had such an issue with a fuel injected motor in the past. Its a fast system, a old system, with a msd digital 6. Something may have become dislodged during 900 plus mile tow back to me. Suggestions? Thanks Eric __________________ Eric Merryfield 1883 STK