Pressure testing coolant system

[JEROLD MARMER]

i have a pair of Cummins 6CTA8-3 engines on a SeaRay 2005 4200 Sundancer that i have had coolant leaks on. I want to buy a pressure tester but do not know what size the neck is on the coolant tank. lots of cheap testers out there but it seems the better ones have few adapters. Anyone know the size of the neck and a recommendation on a reasonably priced pressure tester?

Topic

[cj.brown1056]

No, I hadn’t. Thanks so much. Greatly appreciated.

[Rob Schepis]

cj.brown1056 wrote:

I’m told there’s a banjo fitting below the turbo which has been known to leak.

Yes, have you seen this: https://www.sbmar.com/articles/cummins-6cta-480ce-turbo-banjo-leak-fix/

[cj.brown1056]

I have the same boat and engines (480 CE’s?). Just found I’m losing coolant toward the forward end of my port engine. There was quite a bit in the bilge after a 5 minute WOT run on the weekend. Im interested to know what your situation was and the fix. I’m told there’s a banjo fitting below the turbo which has been known to leak.

[Rob Schepis]

I just used this kit on a 6LP Yanmar

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Kevin Lee

[Author]

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