Engine "misses" at constant RPM.
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Joined: Feb 2008
Posts: 348
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From: Pensacola, Florida
Car: 88 IROC Z Vert CZA3
Engine: LB9 5.0 tpi
Transmission: MM5 5 spd
Axle/Gears: G92 Performance
Engine "misses" at constant RPM.
RE: 1988 IROC-Z vert, 5.0 TPI, 5 speed
My ride sat up for 3.5 years after Hurricane Ivan with no starts at all. In March I had her flat bed towed to my mechanic. He drained & wiped the fuel tank, replaced the fuel pump, changed plugs (plug wires are +/- 10 years), ran ejector cleaner, cleaned air intake, new air filter. She has good acceleration and drives smooth while accelerating and at relatively high RPMs; however, at steady low RPMs she "bumps". It's like she is not firing all cylinders. Sorry if I am not being descriptive. Any sugestions you may have on what I need to have done would be much appreciated.
My ride sat up for 3.5 years after Hurricane Ivan with no starts at all. In March I had her flat bed towed to my mechanic. He drained & wiped the fuel tank, replaced the fuel pump, changed plugs (plug wires are +/- 10 years), ran ejector cleaner, cleaned air intake, new air filter. She has good acceleration and drives smooth while accelerating and at relatively high RPMs; however, at steady low RPMs she "bumps". It's like she is not firing all cylinders. Sorry if I am not being descriptive. Any sugestions you may have on what I need to have done would be much appreciated.
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Joined: Nov 2003
Posts: 412
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From: TX
Car: 1984 Firebird SE
Engine: 388 sbc, Brodix Track 1s
Transmission: turbo 350 transmission
Axle/Gears: 4.10 gears
Re: Engine "misses" at constant RPM.
things I would check would be the spark on all plugs and gaps, then the fuel filter, fuel pressure and check for any vacuum leaks.
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theshackle
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Sep 17, 2020 08:26 AM
