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Moisture Inside Distributor Cap - HELP!
- Sailorbanker
- Scurvy Dog
- Posts: 2
- Joined: February 18th, 2015, 11:03 am
- Vessel Info: 1986 3207 Aft Cabin
Moisture Inside Distributor Cap - HELP!
We have added about 100 hours in the last 3 years. However, due to busy schedules, we used it very little in the past six months. My port engine started developing a ton of moisture inside the distributor cap. Replaced it (including new seal), added Wire dry/WD40, and it ran fine. Yet after a few weeks pulled the cap and was completely corroded. Again cleaned it, added wire dry/wd-40; Ran for a bit and died. Cap was full of moisture.
Ideas???
Never had a problem until recently.
Anyone using vented caps and if so, where can I get them? Thinking of venting the cap to a vacuum in the carburetor.
HELP!!!!!
- waybomb
- CYO Moderator
- Posts: 2385
- Joined: February 5th, 2013, 9:24 pm
- Vessel Info: 1995 Boston Whaler Rage15
1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glasspar / 1967 Johnson Electromatic 85
1996 Boston Whaler Rage 15 - Location: Saint Joseph,Mi
- Has thanked: 49 times
- Been thanked: 389 times
Re: Moisture Inside Distributor Cap - HELP!
Moisture only collects on surfaces colder than dew point. Having said that, why is this one distributor colder than other things, and, where is all this moisture coming from? Do you have a wet bilge? A cooling system leak? Is the engine oil ok? Are the wires to the points sealed;the seal is almost 30 years old now. Are you using the exact correct cap? Is there a crack or hole in the distributor body? If it is this corroded, does the advance mechanism work or is it frozen by rust?
I don't have an answer but if it were me, I'd be checking the things I've questioned, starting with how sealed is the interior of the distributor.
Fred
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572 ci
1995 Boston Whaler Rage
Past - 1988 2807, 1989 4207 Aft
- g36
- Admiral
- Posts: 1913
- Joined: April 7th, 2014, 6:07 pm
- Vessel Info: 1997 Carver 405
- Location: Soddy Daisy TN.
- Has thanked: 7 times
- Been thanked: 572 times
Re: Moisture Inside Distributor Cap - HELP!
agree any gas fumes exposed to some kind of arc would not be a good thing.
Crusader xli
The Black Pearl
Soddy Daisy Tn.
- Sailorbanker
- Scurvy Dog
- Posts: 2
- Joined: February 18th, 2015, 11:03 am
- Vessel Info: 1986 3207 Aft Cabin
Re: Moisture Inside Distributor Cap - HELP!
oil is changed every 25 hours; caps are brand new after the first incident when started accumulating moisture. no coolant leaks. first time it happened was during the summer.
hmmm, looks like a worn seal.
thanks!
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