When a misfire, or bad combustion occurs, the normal combustion process is interrupted, negatively affecting engine performance. So what can interrupt the combustion process? In simple terms, anything that changes a combustion parameter. Now that’s a pretty wide reaching answer, but just think about those things that can adversely affect combustion.
Pre-ignition (the beginning of combustion before the spark plug fires) certainly affects the combustion process. It results from hot spots in the combustion chamber. Also, the build-up of carbon deposits in the combustion chamber can effectively raise the compression ratio. The result is detonation, which is the igniting of the remaining air/fuel mixture ahead of the flame front. While we’re on the subject of things that can affect ignition, a bad spark plug wire (on those vehicles without coil-on-plug ignition) is a common cause of misfires. Also, a clogged fuel injector will limit fuel flow, causing a misfire.
New: 2005 Dodge Ram 1500 QCSB 4x4 Hemi Laramie Bright Silver
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::GONE BUT NOT FORGOTTEN::2005 Dodge Ram 1500 QCSB 4x4 Hemi Sport Black
5.5" Rough Country Lift, Dick Cepek DC2 20x9, 325/60R20 Nitto Terra Grappler's, Superchips 3865 - 91 Tune, Extang Tonneau Cover, K&N Cold Air Intake, Bosch Platinum 4 plugs, Magnaflow Y-Pipe, SI/DO Flowmaster Original 40 Series, Synthetic Everything, 7000K Headlights, Foglights and Hellas..
1998 Dodge Durango SLT 4x4 Black
Hypertech 87 Tune, K&N Cold Air Intake, Bosch Platinum 4 plugs, Bosch 8.5mm Wires. Ported Throttle Body, SI/DO Flowmaster Original 40 Series Muffler, Headman Headers, 3" PA BL, 2" T/S Lift, 33x12.50R15 Firestone Destination M/T's, 15x8 Eagle Alloy Wheels.
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