starts ok when cold,runs for 1 minute,puffs black smoke,ouits will not start when hot,changed everything on 2.9,tune up sensers,everything but o2 sensor fuel pump onrail,runs like starving for air

Asked by Apr 09, 2016 at 08:57 AM about the 1986 Ford Bronco II XLT 4WD

Question type: Maintenance & Repair

2 Answers

brand new coil,wires,new ignition module,new distributor

74,765

Then check the fuel pressure, it should be 35 to 45 lbs. Also check out the EGR valve and system. Make sure the EGR valve is closing all the way.

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