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Date Posted: - Monday - 03/23/09 - 1:22pm
Author: Randall, Murre, M31
Subject: Radiator Cap Leak

My radiator cap on my 4108 leaks as the engine warms up. It's a new-ish cap--maybe four years old, and was replaced by a mechanic, not me.

Are there different kinds of caps? Do I need a "thighter" one--a cap w/a different rating?

Not a new problem, but I noticed it again this weekend when I installed a radiator overflow bottle slightly uphill from the engine. The bottle won't fill at all (because its uphill?) but will **somewhat** if downhill from radiator.

Confused.

RR

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Replies:

[> Radiator Cap Leak -- Brian Sweeney, - Friday - 04/ 3/09 - 12:08am

Randal,
Check out the two rubber gaskets on your radiator cap. I just replaced mine with a 7lb. from an auto parts store. Just bring in yours and match it to one there.

Brian Sweeney
1973 M36 Gran Mariner Hull #

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[> thanks -- Randall, - Tuesday - 04/ 7/09 - 12:39am

and that's what i did. though i'm having trouble finding one less than 13 pounds. go figure.

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[> [> 7 lbs Cap -- Capt'n Mike "Gypsy Mariner" TM36K, - Tuesday - 04/ 7/09 - 1:48pm

Randall,
Try an E-bay search. They have a lot of 7 lbs radiator caps available.
Mike

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