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Mastiffman

Onan 18hp B43G typical Issues?

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Are these prone to leaks from oil filter adapter?

Any other issues compared to the performer series Onan's?

 

Thanks. 

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Shouldn't be but the gasket it rather cheap for them. And about the same engine with some casting differences. 

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The B43 I have on my bench had an oil leak which came from the oil the drain tube. Someone cranked that thing in and the NPT threads of the pipe cracked the block.

Searched high and low for that leak and gave up. Then got back to it a few months later and found the oil was completely drained, so the leak had to be right in the oil pan. It was just a very small and fine crack. The chronic oil leak is probably why the guy sold it cheap.

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WOW. Nuts. Glad you got that nailed. Easy fix too. New (used) oil pan and gasket, bang! Fixed! 

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Find a good oil pan on ebay and you'll be all set! Glad you found the cause of the leak

 

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