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post #1 of 4 (permalink) Old 11-12-04, 04:03 AM Thread Starter
XW GS Fairmont
 
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Join Date: Nov 2004
Location: Melbourne
Age: 46
Posts: 47
misfire under load

I have a reoccurance of a misfire under driving conditions.
Today on driving home from work in peak hour traffic my car misfired very badly under load. The same thing happened last week and it went to the auto elec to repair an old/ melted resistance wire to the coil. Obviously they did not find the root cause of the problem.
Is it the coil iteslf breaking down?
If so how do I test it? Or is it something else?

Engine is a warm 351accel coil
accel electronic dissy
eagle 9mm leads

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post #2 of 4 (permalink) Old 11-12-04, 04:14 AM
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Re: misfire under load

Accel coils aren't known for their reliability. Borrow another one, even a stockie, and try it out..

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post #3 of 4 (permalink) Old 11-12-04, 05:14 AM
74 XB Fairmont
 
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Location: Cranbourne, Vic
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Re: misfire under load

low rpm breakdown on load usually mean high resistance in the leads. The fix is new leads.

If your accel coil has gone south? A bosch 716 or 717 will do the trick.

Brenden

XB Fairmont (street car) 11.07@123.02mph.
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post #4 of 4 (permalink) Old 11-14-04, 05:14 AM Thread Starter
XW GS Fairmont
 
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Join Date: Nov 2004
Location: Melbourne
Age: 46
Posts: 47
Re: misfire under load

Thanks Strokexd and Brenx

a new bosch coil worked wonders. Mind you I have used the same Accel coil for 12 years now! So mine at least has been reliable.(until now)
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