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Old 11-30-2018, 01:12 PM   #71
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yea huge bummer , glad it got caught tho
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Old 12-05-2018, 01:46 AM   #72
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Originally Posted by Red90 View Post
You do t need to crack anything on a TDI. They are self bleeding. With the stock system just crank it for five seconds and it is bled.
I think this must depend on exactly how your hoses are running from exactly what point the filter is sitting from exactly how long each hose is... etc....

In my experience, I have managed to get fuel into the lines by cranking for a few seconds, but I would not go past that. Usually (in the three or four times I've done it) manually pumping, then waiting, then cranking, then manual pumping is what got the fuel to return into the lines, or to fill the new filter.

Maybe my fuel lines just happen to have a certain dip, rise, length in them that allows for some air lock the moment the old filter is removed. Yours doesn't, thereby allowing you to re-prime with the turn of the key.

After rebuilding the fuel system myself, though, I do see how the system will self purge once the fuel is flowing.

I'm leaning toward getting an electric pump, even if I do install a new mechanical, and just using the factory V8 in-tank pump wiring that is still in place. This will be properly connected to the ignition, and fused without any modifications. Redundancy without complication. Good.
1965 IIa 88"
1988 Saudi 110 300Tdi
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Old 12-05-2018, 08:13 AM   #73
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If it is not self purging there is a leak or a pump not working or the plumbing is not as per stock. The lift pump and the injection pump supply pump are positive displacement. They both pump air as well as fuel. The lift pump moves a lot of fuel.
Condensation leads to rust, Rust leads to anger, Anger leads to hate, Hate leads to suffering.
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