Editing Misfire

===Misfire===


===Steady Misfire===

In the case of a steady misfire, isolating the misfiring cylinder is the first step in diagnosing the problem. 


'''Items that can cause a misfire:'''

===Loose/disconnected HT Leads===

Check they are all attached properly! (Cured my misfire anyway....)

===Moisture in Distributor (Dizzy) Cap===

Unscrew, check for moisture, dry off.  

===Spark Plugs===

[[Spark plugs]]

===Coil Packs===

[[Coil packs]]

===Throttle Position Sensor===

[[Throttle Position Sensor]]

===Lambda Sensor===

[[Lambda sensor]]

===Head Gasket Failure===

A spark plug that shows heavy whitish to brown deposits may indicate a coolant leak either past the head gasket or through a crack in the combustion chamber.
This type of problem will only get worse and may soon lead to even greater problems if the leak isn't fixed. Coolant makes a lousy lubricant and can cause ring, cylinder and bearing damage if it gets into a cylinder or the crankcase.

[[Head gasket failure]]

===Inlet Manifold Gasket Failure===

The Inlet manifold gasket can fail and allow air leaks and coolant/anti-freeze to leak into the cylinder ahead of the injectors. Tell tale signs can include rusty spark plugs on cylinder 1 and 4, sometimes even all four, lumpy idle or misfiring, high emissions, jerky acceleration and deceleration when coming off the accelerator, anti-freeze around the inlet manifold, unburnt fuel and possibly destroyed catalytic convertor.

[[Inlet manifold gasket failure]]

[[Category:Engine]]
[[Category:Lotus Elise]]
[[Category:S1]]
[[Category:S2]]