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Old 07-21-2014, 04:27 PM
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BAsque1 BAsque1 is offline
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Join Date: Jan 2011
Location: Rockland County, NY
Cobra Make, Engine: West Coast Cobra/427
Posts: 853
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Default Intermitent backfiring

Last Sunday I notice an intermittent backfiring which got progressively bad after a while and almost lost power altogether.
The gaskets to the exhaust manifold and header flanges are not leaking so I ruled that out.

I changed the rotor because it did not look good, however, the cap looked ok.
I am using an MSD 6A ignition system with the corresponding MSD coil, someone suggested that I should also use the MSD cap and rotor to complement these. It is on order already.
Could it be a stuffed gas filter ?
Another possibility is that I changed the oil and I accidentally added a bit more than normal which could have fouled my plugs. I took a plug out today and it was dry. So I am stumped by thus sudden missing.
Any thoughts?
By the way it is not the alternator, it was checked and it is fine and there was no loss of amperage when the backfiring started nor the tach gave out huge fluctuations.
Help anyone please
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"Cobra--Because life is too short to drive a boring car"

Last edited by BAsque1; 07-21-2014 at 04:35 PM.. Reason: typo
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