running rough
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Engine Struggling to Accelerate at WoT
Hi, this is my first post on this forum; I have a 1994 K2500 with a TBI 350. Before I go down a bunch of useless rabbit trails of part purchases I figured I'd see if anyone has a clue about my issue on here. So fairly recently I started to notice the truck was running... I don't know if I...- CrashDriver
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- 350 tbi knocking running rough
- Replies: 31
- Forum: Engine Performance + Maintenance
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Runs then when it sits a idle eventually it’s loses spark
So the truck has a different motor in it now it is a 350 vortec still just came out of another truck that had no issue. It now will only runs for about 20 mins from cold to idle temp and starts backfiring really bad and eventually dies seems like low spark the only differences is has open...- vizionwolf
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- fuel maintenance running rough spark
- Replies: 7
- Forum: Engine Performance + Maintenance
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95 350tbi won’t run right!
Alright let’s see how this goes. Got the truck. Didn’t run well. Figured out that everything was pretty shot and needed to be replaced. Replaced every single sensor for engine performance. Rebuilt the throttle body ( brand new injectors ). Cleaned fuel lines and fuel tank. Changed spark plugs...- Noah1167
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- dumb running rich running rough
- Replies: 6
- Forum: Engine Performance + Maintenance
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Engine knocking
Im getting codes 31,32,33,34,41,43,51,52,54, and 55. No matter what the timing’s set at it knocks but it wasn’t doing that before I tweaked with the timing. I’m wondering if my ECM’s bad or something I know that’s an easy thing to blame it on but the motor’s only got 99k miles on it I’ve been...- Beetlejuice
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- help knocking rough idle running rough
- Replies: 3
- Forum: Engine Performance + Maintenance
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‘88 Sierra engine’s knocking, timings right at 0° no CEL but i have 7 codes on my code reader (images below)
- Beetlejuice
- Thread
- base timing i need help knocking rough idle running rough
- Replies: 16
- Forum: Engine Performance + Maintenance
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96-00 454 Running Rough
I have a 1999 K2500 with the L29 454. I replaced the 34 gal. fuel tank, fuel lines, upper intake manifold gaskets, and the cap and rotor in the truck. I also replaced the small vacuum line going to the fuel pressure regulator as it was dried out and brittle, and I replaced the PCV hose. Before...- scons96
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- 454 96-00 intake gaskets l29 lean running rough
- Replies: 12
- Forum: Engine Performance + Maintenance
