Air in fuel return line

[timoNZ]

I have recently fitted Tygon fuel lines to my ski (5 rides old). They are transpearnt yellow so I now can see air bubbles in the return to tank. Is this normal or do I have an air leak somewere? I have noticed a big infrequent hesitation on the last surf ride, Kind of like when the you are low on fuel and change to reserve and the ski is starving for gas. I have also replaced the st-st pick up tubes in the tank to a section of Tygon hose and a clunk. I am wondering if this may be causing the problem by some how jaming in the top of the tank after upside down manuivers???

Any help would be appriciated

 

[Mike W]

I have used that transparent fuel line in the past and hate it. It hardens and turns colow within one riding season. So, I switched back to regular NAPA fuel line.
It is normal for air bubbles to be in your return line when running. I noticed it as well while my ski was running. You may have some other issue going on.

 

[Waternut]

Yeah the air in the return line is normal but you may have other problems if you're getting hesitation. Could be as simple as a clogged fuel filter or pickup. Could also be that the new hose is not seating as well as the old hose and is allowing fuel to leak at the ends. I'd check all that first before you go messing with the carb adjustments.

 

[oxnard111]

There is nothing like OEM fuel line. Napa stuff works but I don't like the large outer diameter

 

[Matt_E]

I also prefer OEM fuel line to others I've tried.

 

[Superjetjim]

I also prefer OEM fuel line to others I've tried.

Agree - I'm ripping all of my clear blue pipe out and replacing with OEM. After market stuff never seals well enough and can let air in if your not careful..

 

[SUPERJET-113]

So where is the best place to get OEM fuel line?

 

[Flash-FX]

http://www.mrcycles.com/eshopprod_c...uel+AND+line.MOTION_PRO_PREMIUM_FUEL_LINE.htm

Perhaps not the cheapest, but it comes in gray and as durable...just like Yamaha OEM.

 

[750SX]

Motion pro fuel line is very good. Pretty much the same as oem IMO.

 

[Dustin Mustangs]

FYI, tygon doesn't get hard like the other translucent lines do.

 

[JetManiac]

I can sell you some nice oem fuel line cheap, as can oxnard i am sure. I clean up and save the best from late model yamaha skis that i part out.

 

[Superjetjim]

Jetskisolutions sell the OEM grey stuff off the role as well.

Is Tygon proper Silicone? - if it is then it should be as good as OEM.

Jim

 

[hellcat66]

i like the OEM stuff my damn self! its titties