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Fuel hose size

Nov 16, 2012
883
Catalina 310, 2000, #31 Santa Cruz
Going to replace some of the fuel hoses on our M25XPB. The manual says the hose is 5/16” ID, at least at the engine filter. I’m too lazy to pull one off to check (and make a big diesel mess). Anybody done that and remember what size hose they used?

Thanks!
 
Nov 18, 2010
2,325
Catalina 310 Hingham, MA
We ordered 50 feet of 5/16" ID for the supply and return. We had about 10 feet left. We also got 5/8" ID for the vent. About 6 feet for the vent.
 
Nov 16, 2012
883
Catalina 310, 2000, #31 Santa Cruz
We ordered 50 feet of 5/16" ID for the supply and return. We had about 10 feet left. We also got 5/8" ID for the vent. About 6 feet for the vent.
Thanks. The supply and return (and vent) were done by a PO, but the lines on the engine are leaking at the barbed fittings. Tightening works for a while, but it starts seeping eventually.
 
Mar 6, 2008
490
Catalina 1999 C36 MKII #1787 Coyote Point Marina, CA.
If there is enough slack on the hose, cut 1" off of the leaky end and reattach it.
 
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May 2, 2012
225
Catalina 310 Toronto
I'm replacing my hoses also. Was told by BETA engines that cheaper hoses get soft inside and the clamps only work for a while and then small amounts of air gets sucked in and create air in your line. Then you have to bleed it. Better to get new hoses.
Glad I noticed this request. I needed to know this " 5/16" ID for the supply and return ".
Jesse you used 40' of hose? :yikes:
Cheers:beer:
2 Old Pirates
 
Nov 18, 2010
2,325
Catalina 310 Hingham, MA
I'm replacing my hoses also. Was told by BETA engines that cheaper hoses get soft inside and the clamps only work for a while and then small amounts of air gets sucked in and create air in your line. Then you have to bleed it. Better to get new hoses.
Glad I noticed this request. I needed to know this " 5/16" ID for the supply and return ".
Jesse you used 40' of hose? :yikes:
Cheers:beer:
2 Old Pirates
That covers the supply and return. They start at the starboard side of the fuel tank, follow the pad for the water heater and then down under the port side under the rear berth in PVC pipes.
 
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Likes: Alansails