My truck has a strange idle which is way more evident when the tank is low on fuel. I just filled it this morning so it will be a while before I drop it and look at the pick-up tube. Then there is the VP44 - does anyone know if the return line on the older trucks is as porblematic as the newer ones?

Last night after work I started it up and popped the hood and sat there for a bit with my head right up near the fuel filter canister it sounded to me as though there was a sucking sound which could have been a slapping sound or something similar?

The truck has 160,000 km on it.

It will get completely re-wired when the weather improves but that is because of the electrical gremlins...

 

It sounds like a loud ticking or tapping depending on how bad it is and will increase or decrease with RPM's.

 

Doesn't sound like a tapping sound and isn't noticable while driving.

 

loose rockers will be more evident when the motor is cold..............they tighten up with heat

VP-44 return line issues.............none

when I installed my Fass I used my OEM supply line as the return...since it is bigger

 

Whit, the motor is hot at this point. No issue when cold.

 

if the noise quits when ya get up to operating temp then it aint yer rockers

this is wierd.........hard to explain sounds on the internet makes it tough

 

add 24-30 ounces of 2 stroke oil and tell me what it sounds like then..seriously

do yerself a favor and add the oil while its running........you will be amazed

 

You think the sound might be oil pump related then?

 

I think he means add the 2 stroke oil to the fuel tank.

 

add the oil man

I bet yer sound goes away

nuttin to do with oil pump

add the 2 stroke oil to yer fuel tank