What did I blow up now - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Blue GMC · 06-26-2018, 11:48 PM

Took out the 71 this weekend and she was acting weird. Accelerate from 0-30 fine then sputtered from 30 to 38 then ran like it rear was on fire until 50 then did the same thing until 58 mph. When it was sputtering was blowing black smoke like a diesel. No problems going up and down the rpm band while in park.

Running a 350/350 combo and both were rebuilt 528 miles ago but long enough to have no warranty. Truck does sit a bunch but has never acted up before.

06-26-2018, 11:48 PM	#1
Blue GMC Registered User Join Date: Jul 2014 Location: Olathe, KS Posts: 384	What did I blow up now Took out the 71 this weekend and she was acting weird. Accelerate from 0-30 fine then sputtered from 30 to 38 then ran like it rear was on fire until 50 then did the same thing until 58 mph. When it was sputtering was blowing black smoke like a diesel. No problems going up and down the rpm band while in park. Running a 350/350 combo and both were rebuilt 528 miles ago but long enough to have no warranty. Truck does sit a bunch but has never acted up before.



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