Logo
FULL SITE MENU

Replacing Fuel and Vacuum Lines - OEM versus After Market

B

brw0513

Member
Hello All.

I have a 1999 Johnson 35Hp 3-cyl outboard. It wasn't idling well, so installed overhaul kits in both fuel pumps and the three carbs. Both fuel inlet caps were broken around the inner O-ring boss, so hopefully that was the problem - time will tell.

The fuel supply line from the plastic 3-way manifold to carb #2 (looks like 3/16" ID) was split at the carb end. The hose is a Z-bend affair.

The "U" shaped fuel line between both pumps is a rather loose fit and should be replaced.

Ideally, I'd replace all fuel and vacuum lines.

The issue is most of these hoses are formed - presumably to avoid kinks since they have sharpish bends.

But these items aren't available any more for purchase.

What do others do. Just purchase hose by the length and install without worrying about kinks?

Is there a recommended hose type that does not kink?

Thanks.
 
No idea what the hoses look like but I'll say this. These type of things were made to make life easier for the manufacturers That is, assembly line speed, ease of installation, cost of making the parts, longevity vs price, blah blah blah. There's no reason that you must use the exact same part especially if the part is NLA. Small shaped hoses you can replace with bendy silicone or even go all out and use hard line and compression fittings (also bend up metal tubing and join to the fitting with short pieces of silicone hose). Use your creativity.
McMaster Carr has all these items. Also you can go down the rabbit hole that is the Parker Hannifin catalog of fittings.
 
Model number??? The one I am looking at here at marineengine shows all the hoses as cut to length from 341088 and gives the length dimensions.
 
Actually the hoses that go to the fuel pumps are pressure hoses.--There is only a wee bit of vacuum on them.-----Hopefully the " automatic " oil mixing system has been removed and thrown away !!
 
Back
Top