Fuel line size

[Milktoast]

My kit is installed but I have a delima....

The line size on the Frybrid valves is larger than the lines coming out of the IP and the lift pump.

I used a fuel line that will fit the frybrid valves and squeezed the hose down to fit the IP and lift pump...

Now I'm getting air in my fuel system. Not a lot but you can feel it when the car sits for several hours.

Is anyone else having this issue.

How/what are you doing to solve this issue?

[Milktoast]

No one else has had this issue? Do I have th only 300d with small inlets/outlets on my IP?

Chris how are you dealing with this issue?

[rackley]

I have the same problem with my VW. Even 1/4" hose is kind of loose on my IP barbs, much less 3/8". If you go to McMaster.com and look for hose barbs, you want some 3/8" barb/3/8" NPT females along with some 1/4" barb/3/8" males. These can be joined back-to-back with each other so you can use a short length of 3/8" tubing and then use the adapter to use 1/4" tubing. Seal with some silicone sealent, I used Permatex Ultra Grey on all my brass fittings without issues.

[KansasDiesel]

Milktoast,
your pics look great, let me know if you need help and I can try to meet up with you.

[Milktoast]

So you are saying to replace the fittings on the IP with these?

Is there a way to reduce the hose from 3/8 to 1/4 without replacing the fittings in the IP?

Are you saying to put a barb/male with a femal/barb to make the reduction?

Does anyone make a brass line reducer?

How does Chris Goodwin deal with this issue on his installs?

[cgoodwin]

Sorry, I had not seen this post until now. I have not had an issue with this at all the 3/8" ID line can be clamped onto the barbs without leaks, at lease I have been able to do so. On my VW van I simply cut the hear line attached to the barbs leaving about 2", I then slipped the 3/8" line over the hard stock line and clamped it in place, still running after 8 months. Perhaps I will add this suggestion to the install manual.


We install here in the shop using the supplied fuel injection clamps and 3/8" ID line and do not have problems. Are you sure this is where the air leaks are comming from??

Chris

PS. I have moved this thread to the Tech section

[rackley]

Maybe a very crude illustration will help:

1/4" barb female NPT male NPT 3/8" barb

________/`````` \\\\\\\\________
````````\______ ////////````````


Just take the two fittings, screw them into each other, and you have your line size converter. Just plug in the 3/8" hose on one end and the 1/4" hose on the other. Put it anywhere in the hose between your valve and your IP.

[chrisf]

I used the 3/8" hose just like you did and squeezed it tight onto the 1/4" fitting on the IP. No problems that I am aware of.

[Milktoast]

No I'm not sure that is where it is coming from. It was just a simple conclusion.



How would you suggest I test?


I did buy the barb fittings and will install today. This will either prove it or rule it out.