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  • hi, new here, simple ?

    How do you keep moisture out of the distributor on a CJ7 258? I've also had this same problem on a 75 CJ5 304 some years ago.

  • #2
    I always used to spray some WD40 in there .... not a permanent fix .... but usualy gets you back on the road!

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    • #3
      Thanks Bret, yeah I've done that to get going again but I would like a fix to keep it from happening in the first place. I know I can't be the only one who has this problem with a CJ. I'm not even talking about fording deep streams or rivers just large puddles during rain storms etc. It's kinda humiliating to have your 4X4 bog out on you in the street while being passed by a Toyota Corolla.

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      • #4
        Welcome to the board!

        I live in SE Arizona, where it doesnt rain much...until the monsoons, then it's worse than the rains I saw in the Phillippines!!

        I use dielectric grease around the rim of the distributor cap, plug wires, spark module and coil. I have an 86 CJ7 without the computer. Not had any problems so far.

        If you get into deep water playing, try some silly-cone (silicone caulking) around the cap and connections.

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        • #5
          Thanks Gryphon, that sounds like a good fix though I didn't know what dielectric grease was at the time. A short check on google educated me.
          By the way, I lived in Phoenix for 23 years and though they don't get much rain, during the monsoons some of the streets would turn to rivers. I finally got tired of the sun so I moved back to the midwest, my jeep didn't have any AC either; that's fun when its 110 degrees.

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          • #6
            I have seen folks take the vent cap off and attach a vent hose that runs up higher in the engine compartment, then silicone the snot out of everything else. Just make sure not to gum up the vacuum advance.

            Sometimes the best bet is to find the source of the moisture ingress. If it is just condensation, then making sure the vent hole isn't plugged is the best bet. If it is splashing up while driving, a simple baffle would do wonders in addition to the options listed.

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            • #7
              permanence...

              Welcome to the board, Garry. Ditto on the above recommendations, but I'd save the silicone sealant under the cap for a last resort. The silicone sealant can get downright permanent in a place like that.

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              • #8
                I'd do the dielectric grease thing , I do mine and never had a moisture problem. OK I'm waiting.

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                • #9
                  You could build a sheet metal shield. I have thought about it, haven't tried it

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                  • #10
                    Originally posted by garry
                    Thanks Gryphon, that sounds like a good fix though I didn't know what dielectric grease was at the time. A short check on google educated me.
                    By the way, I lived in Phoenix for 23 years and though they don't get much rain, during the monsoons some of the streets would turn to rivers. I finally got tired of the sun so I moved back to the midwest, my jeep didn't have any AC either; that's fun when its 110 degrees.
                    I'm sitting in Chandler at the moment...headed home in a few hours. Yeah, understand the monsoons and 110 in a hot Jeep! That's one reason I run door and topless! (tho I do run a bikini top almost always! I'd bake and die otherwise...literally!)
                    The grease setup got me thru last year's monsoons. One street in Benson was three feet deep...I was missing my canoe!

                    I do have extended vent tubes too. These are for air pressure changes in the gearboxes and differentials. Mine are run up to about mid-firewall.

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