I Swaped Out My Engines Last Winter And It Hasnt Gone Passed 3 1/2 Only Sometimes It Does And Gives Me The Performance I Need And I Wanted To Know What Could Be The Promblem It Sounds Like It Chokes It Just Doesnt Want To Go And Gets Me Mad But I Want To Know If Its The Oil Because I Got A Tune On The Pcr It Was Working Find For A While But The Rear Main Seal Is Leaking So I Have To Keep Adding Oil So If You Have Any Ideas Help Please
Bad cat?
So I Change Themto Porfomace Ones And It Should Run Fine?
just a guess, an educated guess. Most of us here run Off road Y pipes. Not cats. And have the pcm tuned so the SEL doesnt come on. Plus a tune will help your performance dramatically. Get it scanned first. Might be a fuel issue.
Dad's duramax did the same thing a few years ago... Turns out it was bad injectors from running red diesel.
1969 Chevy RCLB C10 350/TH400 SOLD
2007 Chevy RCSB 4.8 4x4 LS SOLD
2008 Chevy RCSB 5.3 4x4 LT SOLD
2010 Chevy CCSB 6.2 4x4 LT SOLD
2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
2013 FORD CCSB F350 6.7 Powerstroke 4x4
I had mine do that to me when i swapped motors. you might stick new plugs in it. mine was acting just like yours. it took me a while to figure it out. 15 dollar test. good luck
Slowest in Oklahoma...
Then again, it could be bad valve springs too.
1969 Chevy RCLB C10 350/TH400 SOLD
2007 Chevy RCSB 4.8 4x4 LS SOLD
2008 Chevy RCSB 5.3 4x4 LT SOLD
2010 Chevy CCSB 6.2 4x4 LT SOLD
2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
2013 FORD CCSB F350 6.7 Powerstroke 4x4
well i was going about 90 and i got off the free way and the truck kept turning off on me then it just started to knock loud all of a sudden
i took it out and apart i check the crankshaft that was my first guess but it looked fine and the cam was fine too it wasnt broken i checked if the vales were getting oil and the driver side was WAY darker than the passager side the driver side look like honey and they other was a little lighter than choclate
well they were not cloged so they were getting oil... i took out 3 spark plugs to move the crank easier and when i decieded to put everything back i looked at one spark plug and it was smashed and burnt
i allready dropped it in but dont know if just to get rid of it and get a 6.0 or it will be cheaper to fix it and i dont know what the problem is yet
its a 5.3 off a 01
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