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Miss Fire Over 4k Revs


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#1 insamoufonyx

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Posted 13 March 2008 - 07:09 PM

hi, im getting a miss fire once i got over 4k revs, ive re set the timing correctly, cleaned the plugs several times, set the carb properly and its still happening?

what could be causing this, it started not long after fitting my new exhaust manifold.


any ideas?

cheers

#2 munnracing

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Posted 13 March 2008 - 08:47 PM

hi, im getting a miss fire once i got over 4k revs, ive re set the timing correctly, cleaned the plugs several times, set the carb properly and its still happening?

what could be causing this, it started not long after fitting my new exhaust manifold.


any ideas?

cheers

Have you checked your points and condenser this could cause a missfire if not set up correctly, this may not help if you have an electronic distributor

#3 insamoufonyx

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Posted 13 March 2008 - 11:09 PM

i think its a lecy one, how can i check, i didnt change it but the previous owner may have done?

#4 luke6040

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Posted 13 March 2008 - 11:27 PM

chek theres no holes in the adance tube (tube from manifold to carb) and if not there have been people taking about cleaning off the wieghts and spring in the dizzy this may help.

#5 duncancallum

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Posted 25 May 2008 - 08:02 AM

is it a diffrent spec manifold as it may be a fueling issue

#6 Broomer

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Posted 25 May 2008 - 08:09 AM

i think its a lecy one, how can i check, i didnt change it but the previous owner may have done?


pull off the dizzy cap. if you see a big module with two wires going to it its leccy, If you see a silver battery looking like thing, with a peice of metal with two little plates that open and close then its points and condenser.

#7 cap'n crunch

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Posted 25 May 2008 - 09:23 AM

yea i would also say it an ignition problem i recently bought a lumentition Magnetronic system, that was faulty and misfiring from 3k upwards.




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