Print Page - Wet Sumping

Title: Wet Sumping - Overnight
Post by: andrwboul on June 15, 2022, 11:22:46 PM

Hi, new owner 1938 Model 8. My bike wet sumps a good litre + overnight, any thoughts what maybe wrong ?

Title: Re: Wet Sumping - Overnight
Post by: Thomas on June 17, 2022, 12:25:37 PM

Hi Andrew (?), that might be sludge at the ball valve. You can find a decription here on page 47:
http://www.marston-sunbeam.org/technicalNotes/model9EngineRebuild.html
Cheers, Thomas

Title: Re: Wet Sumping - Overnight
Post by: andrwboul on June 26, 2022, 10:44:54 PM

Hi Thomas, thank you for the information. Kind Regards

Title: Re: Wet Sumping - Overnight
Post by: andrwboul on August 06, 2022, 11:37:17 PM

Hi, for anyone who may be interested it turned out the return pipe within the oil tank had desoldered and was allowing oil to flood through.

Title: Re: Wet Sumping - Overnight
Post by: singleminded on August 07, 2022, 12:49:07 PM

I've heard of them cracking (rare) but not desoldering..Glad you found the problem quickly though. John

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General Category => Technical Discussion Forum => Topic started by: andrwboul on June 15, 2022, 11:22:46 PM