Classic Mustangs (Tech)Technical discussions about the Mustangs of yester-year.
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Ill try and give as much info as possible. Its a 347, 10.5:1, afr heads, airgap blah blah...Engine diesels pretty bad when I shut it off. I though it might be a timing problem but after a few beers I realized that when I turn the motor off there is no spark so it cant be timing. So I left the timing at 16 initial. The cam is a xe282hr. The carb is a lil ole 600 edelbrock. seems to be running a lil bit rich when I inspect the plugs. I leaned it out a bit and still on the rich side. still diesels. Im running 91 oct which is the highest octane I can run here in so. Cal. I dont want to drive her anymore until I get this fixed, fear of burning up a valve. Next step Ill try a colder spark plug. Idle is set at about 900 in park and 700 in drive. If I back the idle down it wants to stall with that cam.
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Forged 347, AOD, 9'' detroit locker 4.11's, custom 4 link, mini tub, custom front coilover, 4 wheel disc
This could be caused by a number of factors
Too Lean (hot spots) - check for vacuum leaks
Carbon buildup (again hot spots being the carbon)
Octane of the fuel too low (ignites at too low of a compression)
Wrong spark plugs (too hot)
And others but this is where I usually start
Last edited by mr_velocity; 10-13-2010 at 03:07 PM.
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