Crazy 6.2 fuel question

[goochieman83]

Ok so I have been dealing with a hard starting issue with my k5 lately and haven't had a lot of time to deal with it due to other issues. Finally got underneath it today and saw a small drop of fluid in the back, turns out it was diesel. Looked through the fuel lines and noticed one of them was leaking a tiny bit where it goes into the inline filter. Could this be letting enough air in the system to cause hard starting?

 

[Russell]

Absolutely

 

[goochieman83]

Well I just went out there and all the lines are tight, the clamps aren't loose but the line is definitely damp...not sure where to go from there.

 

[diesel4me]

Old rubber hoses can become porus and mooshy inside too..the steel lines can rust and one pinhole is all it takes to cause trouble,and it may not even leak fuel out,just let air in,depending on where the hole is..

The steel lines on my '82 were all flaky and letting fuel weep out,but not drip--I replaced them with a long length of 3/8" copper tubing with just a couple of inches of rubber hose at each end at the filter and tank,that cured all my hard starting and erratic surging issues..

 

[blazinzuk]

Gotta find the leak. My 6.2 did this teeny tiny leak, that's all it took. I had to replace most of my rubber line

Oh and mine was doing the exact same thing

 

[goochieman83]

Yeah its the rubber lune going from the tank to the inline fuel pump. It is leaking right where it screws into the pump. Maybe I can just pull the hose where it connects, trim off some of the end and re-clp it. Is there any kind of sealant to use on the rubber line where it connect to the metal fitting or just use the hose clamp?

 

[Russell]

Just a hose clamp is all you should need. And only just one, two won't improve sealing.

 

[goochieman83]

Copy that, looks like I have an after work project then.

 

[Mikey von]

A good way to check for air and see if you your leak fixed, is run clear tubing onothe return line off of the ip. You will see any air in the system.