has anyone got any idea what could be causing a misfire/splutter on my 3 door, the car runs fine untill you floor the throttle then it splutters. could be my imagination but it seems to be worse as you go up the gears, however it is worse when it has been running for a while.

i have changed the speed sensor and rotor arm but still the same

any ideas cheers kev

 

check the spark gap and the the spark strenght when too hot the coil may reduce the spark (sometimes0 so you could check that and see how it goes.

 

i had the same thing on my ERST a few years back......that turned out to be plug gaps so check em out mate

 

Check your plug gaps first that doesnt cost anything. Are you using the right plugs? Could also be your HT leads.

Mike.

 

set the plug gap at just over 0.6 and it appears to be cured