Classic Mustangs (Tech)Technical discussions about the Mustangs of yester-year.
Welcome to Mustang Forums!
Welcome to Mustang Forums.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!
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.
This ad is not displayed to registered or logged-in members. Register your free account today and become a member on Mustang Forums!
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 04:07 PM.
This forum is owned and operated by Internet Brands, Inc., a Delaware
corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford
Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor