PeachParts Mercedes-Benz Forum - View Single Post

tobybul · #4 06-06-2010, 03:19 PM

Quote:

Originally Posted by bustedbenz

The whole point of priming is to fill the filter canister up and then the lines.

That nut on top of the secondary filter has to be down tight as you need to seal it COMPLETELY before priming has any effect. You're pumping your fuel/air right out through the leak you introduce by having the filter partially unfastened.

That's why you have to re-prime after changing that filter. The filter is part of what must BE primed under normal conditions. And to prime it, it has to be airtight.

I understand that part. I never took off the spin-on filter. SO there should be fuel in it (unless it drained out when I removed the old lines). All I did was replaced the supply and return fuel lines between the engine and the tank.

But I will try your suggestion - gain, since I did it that way the first time - all nuts around filter closed.