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plug wires and oil

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by JayG, Jun 25, 2000.

  1. JayG

    JayG Registered Member

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    is there a way to test plug wires to see if they are bad and are causing a miss and also is there a oil or something that will help to stop oil dripping past valves?
     
  2. '73 K5

    '73 K5 1/2 ton status

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    Aren't most problems caused by a break inside the wire? Couldn't you just use an ohm meter and put each test lead on each end of the wire and check for continuity.

    '73 K5
    Chevy good...Ford bad
     
  3. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    Are you concerned because you are getting oil past your valve seals? The only CURE for that is to get your valve seals done, but running thicker oil may reduce the amount of oil that finds it's way into the cylinders.........A while ago, someone mentioned somthing about some new kind of umbrella-style seals you can install without pulling off your heads, too.

    Give us a bit more info about your problems, and we may be able to give you some better suggestions........and let us know what you're driving, too.
     
  4. Blazer79

    Blazer79 1/2 ton status

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    That's one of the most basic failures, but the wire starts to fry from passing so much current over time. Also the RFIs and EMIs increase as the cable gets older (depending on brand).

    <font color=blue>//////
    http://blazer79.coloradok5.com
    </font color=blue>[​IMG]
     
  5. MudRebel350

    MudRebel350 1/2 ton status

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    Using an ohmmeter put one lead on either end of the wire. it should be less than 30,000 if its more its bad. Also measure the length of the wire its 10,000 ohms a foot. As for oil you need new valve guide seals as Im sure most of us do.

    J.D.
    88 Gmc Jimmy
     
  6. dumbfounded

    dumbfounded 1/2 ton status

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    Ohm meter will work. As for the valve seals the heads do not need to be removed for any seal. The only way to change them is to pressurize the cylinder with air from a compressor (this is to keep the valves from falling to the piston and allow you to install the springs) The tool that fits into the sparkplug tool is fairly cheap and can by them at some auto parts stores. You can get some with a guage so you can also do compression checks (neat)

    Wasn't me.............
     
  7. Russell Keys

    Russell Keys 1/2 ton status

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    Out here in the sticks we wait till dark and crank her up and look for the fireworks display. If you see sparks there's a prob. Be sure that there's noy any wires on the headers/manifolds. If you need new wires remember you get what you pay for. As far as the oil prob. PAW has a pretty sweet 468 super gorilla that'll drop right in. -Russell
     
  8. Espen88k5

    Espen88k5 1/2 ton status

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    If air is not available you can use thin rope. Push as much as you can trough the plug hole, leave it hanging out. Bring the piston upp to push the rope against the valves. do the valves, bring the piston down, then pull the rope back out.

    <font color=blue>Espen88k5 at: </font color=blue>http://espen.coloradok5.com
     
  9. dumbfounded

    dumbfounded 1/2 ton status

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    Not to knock your idea Espen but seems kind of risky. That doesn't seem to clean. Remember if it's just the valve seals a cheap compressor is better than scratching the hell out of the cylinder walls b/c that minute piece of dirt on the string got left behind. Then It would smoke like hell all the time...........

    Wasn't me.............
     
  10. Espen88k5

    Espen88k5 1/2 ton status

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    Your probably right, It's a "shadytree-fix" as good as any. We did the air-pressure thing on my wife's 4 cyllinder, then the connection popped off the compressor and we almost lost it. We talked about other trick's and this was one. It can be done if your carefull and neat.

    <font color=blue>Espen88k5 at: </font color=blue>http://espen.coloradok5.com
     

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