Misfiring on start

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teamster1975
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Misfiring on start

Post by teamster1975 »

Hey everyone :)
D8 Petrol Tubby
When I start the car it sounds as though it's missing on one cylinder. I have to keep the revs up for about 30 secs and then the engine runs normally. No problems at all after that :?
I changed the plugs (which were knackered but a good tan colour on the electrodes); I've still got to get new leads but could it be anything else?
I've also cleaned out the idle air valve (as per mjb's advice in the rough running thread!) which made no difference at all.

I'd be really grateful for any advice! :)
1996 406 1.8LX Got a bad case of hydro lock!
1996 406 Executive 2.0 Turbo XU10J2TE No longer hangin' on in there :(
1997 Honda CB500V
2003 Volvo V40 1.8 GDi SE killed by a nutter in a beemer 5 series
2008 Mondeo 2.0 TDCi Titanium X

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mjb
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Re: Misfiring on start

Post by mjb »

Taking the tube off the throttle body that goes to the idle valve will tell you if it's an airflow problem or not. Yanking HTs in order will tell you if it's actually missing. Could be a semi-clogged injector?
<steve_earwig> I think this forum is more about keeping our cars going with minimal outlay than giving our cars more reason to go bang
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steve_earwig
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Re: Misfiring on start

Post by steve_earwig »

mjb wrote:Yanking HTs in order will tell you if it's actually missing.
Don't forget your parachute.
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Welly
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Re: Misfiring on start

Post by Welly »

.....and some moist toilet wipes 8)
Cars in my care:
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teamster1975
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Re: Misfiring on start

Post by teamster1975 »

Thanks chaps :wink:

Good idea on the hose Matt, I think I'll just change the leads anyway as they are pretty manky! (And I don't trust the insulation! :lol: )
1996 406 1.8LX Got a bad case of hydro lock!
1996 406 Executive 2.0 Turbo XU10J2TE No longer hangin' on in there :(
1997 Honda CB500V
2003 Volvo V40 1.8 GDi SE killed by a nutter in a beemer 5 series
2008 Mondeo 2.0 TDCi Titanium X

"Always look on the bright side of life, dedo, dedo dedodedo"
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