I honestly could not think of a better way to describe that sound to somebody who may have never heard it before......

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

I got an extra injector line and hooked up the injector outside the cylinder. It does not "pop" when I crank the engine. I also picked up another injetor pump (it was free) before I swap them (it seems like a pain the A**) is there anything else I can try? Is there a way to backflush in injector pump, or something.
Thanks

I hope you find out. My 83/240D did the same thing....It's sitting in my drive now for over a month. I did everything you did including replacing all the fuel lines with clear plastic. valve ajustment,blew out all fuel lines, disconnected bio filter, new filters. I need help too............

When you prime the system using the hand pump you will normally hear a 'SQUISHING' type noise, this is fuel passing through the check valve on the inboard side of the pump. If you do not hear this noise then I might think there may be a restriction in the fuel system, where??? Try exchanging the mechanical fuel pump on the outboard side of the injection pump before changing out the entire injection pump.

A lot of good advice has been produced, so I won't repeat much of it.

Check return line, (but you may have short circuited the return to the feed side)? I've heard of running problems due to this, but it ought to start.

Have you run biodiesel? That might have degraded fuel lines, but if any fuel pumps, it ought to at least try to start.

How about draining tanks and filing with new fuel, or take a small container and feed directly to lift pump or even IP? Draw out a sample you're trying to run it with and see if it even burns!

If it makes you feel any better, you're not alone. In the Monster Garage episode about the Anglia, 6 superduper drag racing mechanics couldn't get a Chevy engine to even backfire, so a $40,000+ car was crushed.

I reread posts and saw you did introduce fresh fuel. Have you found anything? There are many of us awaiting an answer from your dilemna to hopefully learn something! Good luck!

Sorry for the long delay ... you know the holidays ... thank you to everybody who gave advice ... it turned out to be a dead injector pump. I got an injector pump for FREE and was going to swap it out myself. However I thought it might be something else. I took it to a shop ... $2400 later my car runs again ... it was the injector pump however they spent 30 hours figuring it all out ... OUCH !!!