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1972 f-100 Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine Troubleshooting burlee New User Jan 15, 2011, 7:55 PM Post #1 of 3 (1410 views) 1972 f-100 Sign In have a 1972 ford f-100 302 v8 it has been running very rough, i have place new distr, points, cond, coil, and it will start idle for about ten minutes die and then will not start. it will try to start then back fire through the carb. i lost on what to do. any help would be great thank you Loren Champlain Sr Veteran / Moderator Jan 17, 2011, 6:42 PM Post #2 of 3 (1388 views) Re: 1972 f-100 Sign In burlee; Sounds as though the choke may be masking a vacuum leak? When the engine is cold, the choke is partially closed, causing a rich condition. As the engine warms, the choke opens. If you have a vacuum leak, it creates a lean condition which will cause a backfire. Check all vacuum connections. Check the EGR valve (could be stuck open via carbon?) Make sure your point dwell is 30 degrees and timing set to specs. Loren SW Washington burlee New User Jan 18, 2011, 9:35 AM Post #3 of 3 (1381 views) Re: 1972 f-100 Sign In thank you for the information i'll give it a go and let you know how it turns out thanks again   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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