[C320-list] Yanmar 3GM issues

[Aaron Laskowski]

I had a similar issue on my older 87 Catalina 34. After much troubleshooting and frustration, I finally found the root cause of the issue (for me at least). The fitting off the fuel tank had a metal ball check valve built into it that got gummed up and blocked free fuel flow. Once cleaned up, all was well again. Might be worth checking.

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From: C320-list <c320-list-bounces at lists.catalina320.com> on behalf of Louis Friedman via C320-list <c320-list at lists.catalina320.com>
Sent: Sunday, July 14, 2024 4:49:49 PM
To: C320-List at catalina320.com <C320-List at catalina320.com>
Cc: Louis Friedman <loualfr at gmail.com>
Subject: [C320-list] Yanmar 3GM issues

Hi all, looking for thoughts here- went out for a sail today -engine took a lot of priming to start but then was fine. After 2 hrs sailing it wouldn’t turnover despite more priming. Had to sail it into the mooring.  Someone suggested  maybe a fuel line clog or I need to change the primary fuel filter? Both fuel filters were changed upon launching in May- would it make sense to change again ?  Picked up Nigel Calders book on diesels but still learning.

Lou
S/v Miss Adventure
#623
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