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fbode's avatar
fbode
Explorer
Jun 23, 2014

bad 460 ford misfire

radiator blew out on road . shut off immediatly and towed home. i installed brand new radiator . put all back together and now the engine misfires badly. checked dipstick and no water in oil so i dont think its head gaskets. was not overheating at all before radiator blew. misfires when runs and light white smoke from exhaust. i'm stumped.
Class A
  • dakdave's avatar
    dakdave
    Explorer
    Jun 23, 2014
    very possible coolant got in ignition system and has shorted out one or more cylinders.If a distributor motor check cap and wires,if a coil on plug check for coolant in plug recesses under coils
  • BluegrassBill's avatar
    BluegrassBill
    Explorer
    Jun 23, 2014
    Cracked water jacket into a cylinder,Also it could be head-gasket.That white smoke is coolant. Do a Compression test will tell the story.
  • cyntdon2010's avatar
    cyntdon2010
    Explorer
    Jun 23, 2014
    BluegrassBill wrote:
    Cracked water jacket into a cylinder,Also it could be head-gasket.That white smoke is coolant. Do a Compression test will tell the story.


    bluegrass hit the Nail on the Head..
  • sailor_lou's avatar
    sailor_lou
    Explorer
    Jun 23, 2014
    As identified above, white smoke is usually steam from coolant and a compression check will tell the story. Hopefully it's only a head gasket. Good luck.

    Lou
    05 Travel Supreme Envoy
  • kdk's avatar
    kdk
    Explorer
    Jun 23, 2014
    As mentioned it is probably a blown head gasket and a compression test will tell. That blown gasket to the water jacket could have caused excessive pressure in the cooling system thus the blown radiator. If your compression test is good then start looking at plug wires and distributor for cracks. kdk

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