ENGINE MISFIRE

I Replaced Fuel Filter. I Get No Trouble Codes. I Have Checked All The Grounds And Battery Voltage To The Fpdm Under Load And All Are...

Bought It With A Misfire. Had An Extra Set Of New Coils So I Installed Them Still Firing On Cylinder 3. It Had Codes Misfire On All But Now...

Tuned Up About 5000 Miles Ago, Started Skipping A Little, Has Never Skipped Unless It Wants A Tune-up. Tuned It Up Again With New Denso...

Goes Away At Cruse Speed No Check Engine Light Not Set No Misfire Codes Set.

I'm Trying To Figure Out What Is Really Wrong With My Sons Car. The First Mechanic Thought It Was The Computer So He Took It Out And...

When Motor Is Cold The Truck Runs Fine. But Once It Gets Warm It Starts To Miss Really Bad And Seems Like It Loses Power. I Changed Plugs...

Engine Performance Problem 2005 Chevy Malibu 6 Cyl Two Wheel Drive Automatic Have Already Replacd Plugs & Coil Packs, Misfire...

Engine Performance Problem 1997 Pontiac Firebird 6 Cyl Two Wheel Drive Automatic Car Idles Fine. Car Begins To Misfire As I Start To...

Replaced Coil On #1 & #4 Plugs Two Months Ago. Now, I Have A Backfire/ Sometimes From Take-off And A Missfire Sometimes At Speeds Of 50 To...

I Own A 2001 Saturn Sl1. The Problem I Am Having Is A Missfire On Cyl#4, Or So The Computer Code Tells Me. I Replaced The Spark Plugs...