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1997 K1500 5.7/350 Rough Idle
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Question
nrathbor
Hi all. My truck has a rough idle that won’t go away. It’s a 1997 GMC k1500 with a 5.7/350 and about 137k miles. Just recently did the plugs, wires, rotor, and cap with all Delco stuff. Ran couple cans of sea foam and some cheaper stuff from wal mart for 6 consecutive tanks(about 1800 miles) also doubling the concentration that was recommended by the manufacturer (AKA 1 bottle for 22 gallons, I used 2 bottles for 23ish gallons). And no difference what so ever. Also, when the truck is cold, such as first thing in the morning, its starts instantly. When warmed up, like doing errands around town or something, it takes a lot of cranks to start and seems to kind of putt-putt to a start instead of solidly crank to a start. Any and all advice would be appreciated. I’ve heard horror stories about these spider injectors and fuel pumps in the mid 100k mile range, not to mention I see a lot of these trucks for sale at 150k with trans rebuilds. I’m not looking to dump a lot of money into it but she is a daily driver and overall in great shape otherwise!!!
Thanks!!!
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