Thread: Fuel priming / air leak theory
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Old 06-06-2012, 11:48 AM
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funola funola is offline
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Quote:
Originally Posted by dieseldan44 View Post
Yes, the wire going to the starter was loose I should go back and update that thread.

I don't have a vac gauge or clear tubing. The car stutters when going back to diesel from VO so I know it's a diesel side problem.

I did go down to the garage and see that my diesel side clear pre filter half empty. That pretty much nails it....leakity leakity. I tightened hose clamps and the secondary filter.
Curious if you ever got this resolved. It is very difficult to purge air out of a modified Mercedes fuel system.

Do you have this fuel configuration:

tank > pre filter > filter > 3 way valve > priming pump > IP ?

It is just about impossible to purge air out of the system using the priming pump in this configuration with the FSM method. A Mityvac on the return won't work either since the banjo bolt is plugged and you are pulling the pressure relief valve closed.
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