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bad head gasket??? help

Discussion in 'Chevy Trucks' started by redneckinit24, Apr 5, 2009.

  1. redneckinit24

    redneckinit24 Junior Member
    Messages: 8

    my 88 chevy k1500 the motor was rebuilt about 45,000 miles ago runs good and all it was bored 40 over and now when i shift to third and give it gas it puffs out a little white smoke and some times into 2nd some said a bad head gasket others say valve guide seals but oil would burn blue and coolant/water white what should i do??? help!!!!

    thanks
    joey
     
  2. the new boss 92

    the new boss 92 2000 Club Member
    Messages: 2,989

    i recently cracked my head on my k1500 and the was white smoke pouring out of the exhaust, i would prolly guess that it would be a head gasket, pull your plugs and see if they are wet with colant, if so you might have a carcked head or bad head gasket. if you run a chevy hot you run the risk of cracking or dishing out the heads. not a cheap fix, so look into it before it get to a expensive repair like mine did!
     
  3. redneckinit24

    redneckinit24 Junior Member
    Messages: 8

    plugs were all clean and it doesnt do it much anymore!?!? just sometimes i have no idea its crazy!!
     
  4. MickiRig1

    MickiRig1 PlowSite Veteran
    Messages: 3,617

    Keep an eye on the fluids. If your loosing antifreeze or oil you may have a problem. A little smoke may not be a real problem. It could be just a valve seal or something minor.
     
  5. the new boss 92

    the new boss 92 2000 Club Member
    Messages: 2,989

    yea i would do what mickirig1 said then, just keep an eye on the fluids and make sure nothing is getting in the oil, could be valve seats aswell!
     
  6. redneckinit24

    redneckinit24 Junior Member
    Messages: 8

    yeah so far no coolant in oil and coolant level staying the same some one told me that its probably valve seats or guide seals thanks guys for ur in put!!!
     
  7. scottL

    scottL PlowSite.com Addict
    Messages: 1,603

    valves not seating properly or rings are not holding fully. Have you done a compression test?
     
  8. MickiRig1

    MickiRig1 PlowSite Veteran
    Messages: 3,617

    Keep checking the oil before you start it in the morning for a little while. If your getting antifreeze on the oil. You may have something that looks like brown snot at the top of the oil level on the dip stick. Make sure your PCV is not clogged up and still rattles when shook. Wipe it clean and make sure you can still suck a little air through the vacuum side. Make sure you have vacuum at the line when it's running too. Pull the PCV out of the grommet while running and put your finger on the end. It should have a weak vacuum. Might consider running some motor flush in the crankcase before the next oil change. Make sure you follow the directions on the can or jug! It may make the problem worse too if it's valve seals. Sometimes the oil drain holes get a little plugged up and it lets oil pool in the heads more then normal. Or just keep an eye on it. The body may die long before the engine does.