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Gavin Waddell

Misfire

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Gavin Waddell

mz 1.9 has developed a wired miss fire, when the car is cold it is fine as soon as it gets up to temp aftera few miles its starts to stutter when under a load and want to cut out, if i accelerate hard it cuts revs then dies. The engine was rebuilt and i ran it in for a 1000miles, withno problems. I changed the water temp sensor to the ecufor a spare one that i had and will that improved the problem a bit but not much. also on the misfire it bangs a lot lke its over fuelling.

 

Gavin

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munster

Sounds very much like a dodgy ignition amplifier..

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Roman
mz 1.9 has developed a wired miss fire, when the car is cold it is fine as soon as it gets up to temp aftera few miles its starts to stutter when under a load and want to cut out, if i accelerate hard it cuts revs then dies. The engine was rebuilt and i ran it in for a 1000miles, withno problems. I changed the water temp sensor to the ecufor a spare one that i had and will that improved the problem a bit but not much. also on the misfire it bangs a lot lke its over fuelling.

 

Gavin

try change ignition amplifire....

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Gavin Waddell

i will change the amp for a spare one that i have lying around, the other thing is tyhat ive never had heat paste on the amp, its alwazs been fixed to a big aluminium plate to dissapate the heat.

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kate205gti

ditto ignition amp :D worth trying a known good one just to be sure!

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large

Water temp sensor,when engine is up to temp it is then over fueling. To test just unplug whan up to temp.

Edited by large

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MerlinGTI

Mines just started doing this within the last week ! ECU temp sensor is brand new (changed it a fortnight before the problem began) So im too going with ignition amp.

 

Make sure you get a bosch one mine, I put a GSF one (Hugo) on and it created a missfire all thrugh the rev range.

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