Questions & Answers for: misfire under load

Question about Cars & Trucks

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...misfire ? it runs rough only under a load. when in idle position no problems but around 55 mph it starts cutting back and i have to let off the the throttle. need some direction please Swapping coils ...

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Question about 2012 Genesis

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Hyundai Genesis V-6 engine misfire Significant misfire on cold start.Number 3 & 5 misfire on cold start. Misfires under light loads up to about 2,000 RPM Poor fuel economy black soot all over the ...

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...misfire under load , loss of power new cop,s granatelli 25-3001mpg , new walker o2 sensors ( up stream ) at about 1000 rpm's runs smooth , under load and at idle misfire more under load - no ...

Question about 2009 Traverse

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...load engine misses 1st code random misfires 2nd Code #2 misfire Changed plug and coil pack no help Still missing under mild load I can drive with just using accellarator and do fairly well by ...

Question about 1998 C1500

1 Answer

1998 Chevrolet c15 5.7 misfiring Replaced bad distributor ran great for months and is misfiring with multiple cylinder misfiring message. Removed distributor checks ok still misfiring under load. ...

misfire under load, codes p0300 and p0302 . had coil 2 and all spark plugs replaced. A few days later check engine light came on and code p0352 came up . car runs prefectly no misfire idleing or under

Question about 1998 C1500

1 Answer

...misfire under load? Intermittent misfire on cylinder 3 under load. Checked spark plugs and coils, replaced fuel pump cam follower and fuel injector, cleaned intake valves. Problem persists. Runs fine ...

Question about 2000 S10 Pickup Engine/Motor h70318931f 4.3L VIN W, 8th digit Dallas, Texas

1 Answer

...Misfire Under Light Load 2000 2500 RPM 97 Jimmy 4 3 Misfire Under Slight Load Gen III and IV Small Block... GMC Chevy 4 3L random misfire bad distributor GMC Sierra C1500 4 3L Vortec cylinder 5 ...

Question about 2000 S10 Pickup Engine/Motor h70318931f 4.3L VIN W, 8th digit Dallas, Texas

1 Answer

when fuel is low and loaded it misfires one if the reasons for misfires is low fuel pressure/ pump when loaded there is a requirement for more fuel and if the pressure is too low then misfiring occurs

...misfire on cyl 5 under load idles fine Have tested everything i can think of info of tests in details any info or feedback would be helpful swapped spark plug, plug wire, coil,injector, misfire stays ...

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