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Originally Posted by Dirty Ern
I looked under everything I could think of in the search and couldn't find an answer. I want to know what to expect when the hand pump is pumped? I recently removed the injector lines to gain easy access to the glow plugs. After reinstalling the lines, with the nuts at the injectors still loose, I pumped the hand pump till I was blue in the face, expecting to see weeping at the nuts. I didn't see fuel so I thought the hand pump was bad so I tightened the nuts and cranked a long time till it started.
I just changed a couple of glow plugs on my other car and also replaced the hand pump on it just for kicks. While the injector lines were still sitting on the air cleaner, I pumped until I heard the squishing sound. I thought I would see the fuel coming out of one or some of the ports of the injector pump and didn't. After a little pondering, I believe that the pumping action only pulls fuel from the tank and charges the filters and fills the injector pump.
To get the fuel lines full, I think that I will need to use the LarryBible trick of leaving the injector lines one turn loose at the injectors and have Wifeypoo crank and I'll tighten them one at a time as they weep.
Am I on the right track or what?
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Yes,
The only way to prime the rigid injector lines is to crank the engine. It is best to ensure that the injector pump is primed by loosening the banjo on the IP return line and pumping the primer until the air bubbles cease, then tightening the banjo bolt.
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Tony from West Oz.
Fatmobile 3 84 300D 295kkm Silver grey/Blue int. 2 tank WVO - Recipient of TurboDesel engine.
Josephine '82 300D 390kkm White/Palamino int.
Elizabeth '81 280E, sporting a '79 300D engine.
Lucille '87 W124 300D non-turbo 6 cylinder OM603, Pearl Grey with light grey interior
Various parts cars including 280E, 230C & 300D in various states of disassembly.
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