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Author Topic: 8v misfire  (Read 1372 times)

Offline Andy P

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8v misfire
« on: 15 January 2011, 18:05 »
Over night I seem to have developed a misfire. It is on hesitational on full throttle. As soon as you plant the throttle it will miss and shake then clear itself and pull as normal. If you feather the power in it's fine. Also once it's warm it won't idle and it cuts out. Anyone experienced this?

Cheers
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Offline rob.043

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Re: 8v misfire
« Reply #1 on: 15 January 2011, 18:16 »
What engine?
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Offline Andy P

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Re: 8v misfire
« Reply #2 on: 15 January 2011, 18:18 »
2.0 8v from a mk3 with a 1.8 head.
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Offline Andy P

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Re: 8v misfire
« Reply #3 on: 17 January 2011, 22:03 »
Nobody had this problem? I don't want to start spending money in wrong places. Otherwise it could be a never ending expense. I've done a search and it could be anything.

Cheers
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Offline rob.043

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Re: 8v misfire
« Reply #4 on: 18 January 2011, 10:47 »
Could be the timing is out? If you have a timing light, check it out. Should be 6 deg before TDC at 2000-2500rpm. See the digi tuning guide in the maintinance section. Unless someone knowledgeable has any ideas?
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Offline rubjonny

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Re: 8v misfire
« Reply #5 on: 18 January 2011, 10:53 »
do the obvious first, new plugs, leads cap and arm. could be anything really, something you need to go out and check for yourself ;)
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Hello my name is John and I'm a dub addict.

Offline Andy P

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Re: 8v misfire
« Reply #6 on: 18 January 2011, 12:00 »
Trouble is I've had the timing played with and set up on the vernier also the afm has been altered. So it's not just a case of checking the standard timing.
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Offline rob.043

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Re: 8v misfire
« Reply #7 on: 18 January 2011, 14:23 »
Checking the pulley may be a good place to start, could have slipped/come loose... Similarly the distributor.
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Offline Andy P

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Re: 8v misfire
« Reply #8 on: 18 January 2011, 19:31 »
Sorted!! Broken wire going to the coil. I came how from work and had no spark on any leads.

Cheers
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