dist cap problems again Well we are having the same trouble this year with moisture in cap in my 59a with frt mount 2 bolt electronic dist cap Moisture get in it if it is a least bit cool an humid.But took cap off and noticed the coil hole in cap had no metal connector in it.Is that normal.Always keep a spare in the glove box for this reason.To change in a parking lot if it spits and sputters and quits.Went to get some BBQ last week and it started to slowly start to die but it caught up and got me home.I have an electric fan I wonder if it blows cold air on the cap and causes the moisture in cap.I know I beat this dead horse down but Thanks
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Re: dist cap problems again It may not be related, but I had trouble with mine at first. I opened up the plug gap because it seemed like the thing to do do. WRONG. I had constant problems. Went back to .025 plug gap and haven't had a problem in years. The extra voltage caused by the wider gaps stressed the caps causing minute cracks which allowed the moisture in.
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Re: dist cap problems again I have sprayed with wd40 and it helps for a while but when it is humid it gets worse.Thought about going to a 8b dist on the 46 engine in the car.It is just a mess to begin with.
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Re: dist cap problems again fm,
Is the dinky cork gasket in place between the cap and aluminum housing and/ or have you considered the '46 - '48 rabbit ear 2 pc cap....it's an ugly pita but Ford switched from the crab, maybe this is why Charlie ny |
Re: dist cap problems again I wonder if a 'breather hole' might help? Just thinking out loud - as I look at my bench and at the 4 Harman Collins dual coils that I'm working on. LOL. Now the minute one adds a hole, this becomes a place for water to get in . . . but I wonder if there is a way to allow moisture to effectively either not form, or more easily get out? Any thoughts gang?
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Re: dist cap problems again My father had a 47 Ford truck with a 59AB equipped with a rabbit ear cap. Moisture was a problem. I have used the helmet distributor on three 38 Fords and I could run a garden hose on the distributor or have it soaked with rain (hood sides off) and it always started - no problems. No boots on the plugs either.
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Re: dist cap problems again WD 40 is the answer , use a ton of it cant use too much , inside and out .....
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Re: dist cap problems again WD40 is good for getting rid of the moisture that's accumulated in the cap. The WD40 is a temporary fix only.
You need to drill a couple of small vent holes 180° apart and when the rotor spins the inside air with ozone generated will be expelled. Its the ozone that affects the contacts. I'd drill the holes on an angle further down on the outside of the cap and higher up on the inside. This could help in letting water inside. Maybe a small short length hose inserted in drilled holes would help inward migration too. |
Re: dist cap problems again The 46 I had with the original caps, all the cork seals and boots never had moisture problems and even with off roading it through deep puddles that coated the engine with mud, it's all in the details
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Re: dist cap problems again I've been running a "crab" distributor in my 39 for 25 years. Got over 60,000 miles on it and after going to the .025 plug gap to keep the cap from developing small cracks, Have never had a moisture problem and I've been caught in some bad rain storms.
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Re: dist cap problems again Thanks I've sprayed with WD 40 a few times a year.This is a Mallory electronic.And it get moisture in it with gasket on or off.Will try the drill but 1 more question is the other cap I keep for roadside repair it has no brass contact in the cap where the coil wire goes or it came out sometime.Just looked at it the other day and was going to put some dielectric grease in the holes for the wires and seen no brass contact.
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Re: dist cap problems again Use something like a gun cleaning wire brush to clean the wire receptacles on the cap, especially the side walls, that's where the contact is made.
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Re: dist cap problems again Thanks I'll look at it today but I keep a spare in glove box all the time.I hate to keep asking this but it is a real pain in the butt.
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Re: dist cap problems again May want to get a can of DeoxIt. I use in vintage guitar amps and equipment. It will clean off the oxidation and brighten up the brass contacts. It's the best stuff I've found.
https://www.amazon.com/Hosa-D5S-6-De.../dp/B00006LVEU |
Re: dist cap problems again Great tip Tim on the DeoxIt
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Re: dist cap problems again aS A FORMER AUTOMOTIVE HOTLINE OWNER , (LINDER TECHNICAL SERVICES ) LETS TAKE A LOOK AT THIS !!
He said : ( got to really really listen) Well we are having the same trouble this year with moisture in cap in my 59a with frt mount 2 bolt electronic dist cap Moisture get in it if it is a least bit cool an humid.But took cap off and noticed the coil hole in cap had no metal connector in it.Is that normal.Always keep a spare in the glove box for this reason.To change in a parking lot if it spits and sputters and quits.Went to get some BBQ last week and it started to slowly start to die but it caught up and got me home.I have an electric fan I wonder if it blows cold air on the cap and causes the moisture in cap.I know I beat this dead horse down but Thanks key words here ? Same trouble electronic distributor ( mallory) no metal connector ( needs some kind of connector ) electric fan ( high amp draw 12 volt ) Now pulling those words out of statement , we would ask ???????? Is the cap a mallory unit ( china made at best ??) no metal contacc in cap at coil , when it fails do you have spark at coil wire ? Have you took a real good look at coil wire ( omhed for circuit) and connections ??? Look at ignition voltage when electric fan comes on is it still stable ???? Then when all is confirmed etc spray units with wd40 ...... always glad to help |
Re: dist cap problems again ..and then get yourself a proper points distributor.
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