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Old 05-02-2013, 10:13 AM   #21
Jack E/NJ
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Default Re: Help, 8ba suddenly running hot.

Check first for loose or corroded wire/terminals on the sensor or gauge.

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Old 05-02-2013, 10:14 AM   #22
TomO
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Default Re: Help, 8ba suddenly running hot.

If the engine is not hot, you may just have a loose connection or the sending unit with 2 connections could be opening up.
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Old 05-02-2013, 10:47 AM   #23
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Default Re: Help, 8ba suddenly running hot.

Are you puking up antifreeze? If the gauge is pinned, I would think you would see a lot of coolant lose through the overflow. Mine did that a few years ago - turned out it was a leaking head gasket.
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Old 05-02-2013, 10:55 AM   #24
Chuck Sea/Tac
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Default Re: Help, 8ba suddenly running hot.

Did you know there is only one stop leak on the market today, designed for non pressurized systems? I called all three manufacturers tech lines a couple of years ago, and that's whAt I found out. Chuck
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Old 05-02-2013, 11:33 AM   #25
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Default Re: Help, 8ba suddenly running hot.

Chuck - and the stop leak product would be...?
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Old 05-03-2013, 11:48 AM   #26
Chuck Sea/Tac
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Default Re: Help, 8ba suddenly running hot.

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Originally Posted by wga View Post
Chuck - and the stop leak product would be...?
Bars. PN 1196. Old PN is C-16. I've used in my A for 2 years and counting for a leaking head. ( welded repaired police head) one of these days I'll buy a new snyders!
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Old 05-21-2013, 12:47 PM   #27
Eric H
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Default Re: Help, 8ba suddenly running hot.

Ok guys. It turns out it was the gauge. I ordered two SW mechanical temp gauges and it turns out they have a huge pipe thread that is larger than the holes in the heads. Is there an adapter or can I braze a bung in to each water neck. If so, will this give me an accurate temp.
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Old 05-21-2013, 01:54 PM   #28
Mike51Merc
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Default Re: Help, 8ba suddenly running hot.

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Ok guys. It turns out it was the gauge. I ordered two SW mechanical temp gauges and it turns out they have a huge pipe thread that is larger than the holes in the heads. Is there an adapter or can I braze a bung in to each water neck. If so, will this give me an accurate temp.
Most gauges come with a handful of adaptor fittings. I wouldn't braze/weld/solder anything. Go to an auto parts/plumbing supply/hardware store for a set of adaptors.
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Old 05-21-2013, 05:57 PM   #29
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Default Re: Help, 8ba suddenly running hot.

The heads are usually tapped 3/8 pipe thread. As Mike said, usually the gauges come with a bunch of adapters. Might have to go an auto supply store to get some if they didn't come with yours.
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