Damn there goes my free beer! The return line being the cigar hose or the return lines from the injectors OR?

__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

The rubber return line (mine is not a cigar hose. PO put a straight hose) from the filter that goes to the metal return pipe that goes back to the tank. When I pinched it closed it evidently forced fuel into the injector lines and it started right up.

We can do the beers another time.

Mark

The 603 uses regular hose, not a cigar hose.

Sixto
87 300D

Thanks for the clarification.

OK, can you explain to me what is wrong if you need to pinch the return line to get the car started?

I have an 87 that's been sitting for several months, and I'm having a bear of a time getting it started. thanks.

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I would imagine air!

__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

well, I've got good fuel flow out the injector nuts. no air... it just won't start.

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

There seems to be a rash of non-starting 60x's the last couple of months. When all else fails, I suggest pinching the return line which takes the IP pressure relief/control valve to rule out a the valve being stuck open. I don't know why it would stick open, particularly in this case of running the IP dry. Maybe US D2 was reformulated and causes 60x valves to stick open.

Sixto
87 300D

IP timing is close to spec?

Sixto
87 300D

Relief valve sticking totally open or so little pressure required to open it that it makes the injection pump hard to establish feed to the elements. Fuel pressure should be checked on any car showing difficuty in this area.

Actually all of the older mercedes diesels should have their fuel pressure checked. A good preventative measure to spot either a lift pump going out. Or a system partial blockage and that the relief valve is within reasonable specs.