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  #1  
Old 01-19-2006, 05:35 PM
arcticathlon's Avatar
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IP lines are dry, trying to start the car.

ok need your help again. i had to take off the injector lines to get the glow plugs out. 3 were dead, but i replaced all 5. they looked old and crappy. and i dont know how old they are. this is my 300D 1985.

well since i had to take the injector lines off, what bolt do i open up bleed the air out. i have bled my fuel system several times when i had to replace the fuel filter, but when i do it my normal method, no diesel is comming up through the line.

i have opened the banjo bolt above the fuel filter, and i tried the banjo bolt on the back of the IP.

i just want to get it started...
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  #2  
Old 01-19-2006, 05:38 PM
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Priming the pump is jused to fill up the spin on fuel fuel filter not the injection lines. After reinstalling the lines just crank her up!
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1981 300D 147k
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Last edited by Diesel Giant; 01-23-2006 at 01:54 PM.
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  #3  
Old 01-19-2006, 05:44 PM
arcticathlon's Avatar
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so i should just seal it all up, and then pump?

what if i open up one injector line to see when fuel made it up there? will that work, or will that let air and foul it up?
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Grey '91 350SDL 214k
Beige '81 240D 4 Speed 254k
Blue '82 300D 225k
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #4  
Old 01-19-2006, 06:01 PM
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Priming the pump is jused to fill up the spin on fuel fuel filter not the injection lines. After reinstalling the lines just crank her up!

Thanks to Brian Carlton for correcting my original post. I must have had too much apple juice to drink.
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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

Last edited by Diesel Giant; 01-23-2006 at 01:55 PM.
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  #5  
Old 01-19-2006, 06:18 PM
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If it still wont start after you pump like crazy you could "crack" the injector nuts, crank the engine over . When fuel comes out, dog down the nut, crank till fuel comes out of all injector lines. You proly got her going by now anyway.


Edited: See post #9.
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1979 240D 5 spd, 40K on engine rebuild
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2014 Kubota L3800 tractor
1964 VW bug

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Last edited by Brian Carlton; 01-21-2006 at 11:54 AM.
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  #6  
Old 01-19-2006, 06:28 PM
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just got it started. thanks alot guys.

a weird thing happened. on my long cali trip, my glow plug light went out and my right front headlight also went out at the same time. so i just replaced the glow plugs and now the light works again. odd ???
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Grey '91 350SDL 214k
Beige '81 240D 4 Speed 254k
Blue '82 300D 225k
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #7  
Old 01-19-2006, 06:30 PM
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Check your ground connections.
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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair
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  #8  
Old 01-19-2006, 10:11 PM
t walgamuth's Avatar
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also

when you have a problem bleeding, you can spray in the wd40 with the air filter off. it will run on it just fine, til the air is out of the system.

tom w
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..I also have a 427 Cobra replica with an aluminum chassis.
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  #9  
Old 01-19-2006, 10:17 PM
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Quote:
Originally Posted by Diesel Giant
Button everything up and prime the pump like there is no tommorow. It takes alot oi pumping to get the air bled out. How many time did you pump the primer?
Quote:
Originally Posted by Diesel Giant
Yes. You may have to pump it like 40 or 50 times. The Mercedes will get rid of any air in the system if you pump it enough times with the primer pump. It will bleed it back into the fuel filter.
Quote:
Originally Posted by Stevo
If it still wont start after you pump like crazy you could "crack" the injector nuts, crank the engine over . When fuel comes out, dog down the nut, crank till fuel comes out of all injector lines. You proly got her going by now anyway.

Sorry Russell. Totally false. (I've edited post #2 and post #4 to prevent false info for other members)

If you take the injector lines off, you can pump the primer pump 5000 times and no fuel will enter the injector lines. Furthermore, no air is introduced into the system, with the exception of the hard lines to the injectors.

So, the only thing that needs to be done is to get in the vehicle, glow it, press your right foot on the floor, and turn the key.

It will start in 12 seconds.

Also, you don't need to bother with cracking the injector lines. I've proven that it won't buy you anything. If you crack the lines, you get fuel at the injectors in 12 seconds. If you don't crack the lines, you start the engine in 12 seconds.

Another one of the stories that abound on this forum.......proven false.

Last edited by Brian Carlton; 01-21-2006 at 11:55 AM.
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  #10  
Old 01-23-2006, 01:57 PM
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Yes you are correct. I was thinking of something else as I was writing. I corrected my original posts.

Good thing you are quick on the draw!
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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair
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  #11  
Old 01-23-2006, 02:21 PM
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"Another one of the stories that abound on this forum.......proven false."


It still makes me feel better when I see fuel comen outa those cracked injector lines, Thats gota be worth something.
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1985 Euro 300TD 5 spd 220K
1985 Euro 240D 5 spd 130K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"
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  #12  
Old 01-23-2006, 02:35 PM
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Quote:
Originally Posted by Diesel Giant
Yes you are correct. I was thinking of something else as I was writing. I corrected my original posts.

Good thing you are quick on the draw!
No sweat..........you've got it down 99% of the time.
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  #13  
Old 01-23-2006, 04:23 PM
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Uh , no ~ _NOT_ ' totally false ' I replaced all 5 injectors in my NA '78 300CD ad it wouldn't start untill I cranked it with the injector lines cracked to bleed out the air ~ I tried crankig it floored and every other way too , it coughed a few times but made no real efort to start ~ once the lines were bled it lit off before I could get # 3 snugged up......

Only you guys here helped me out by suggesting cracking the injector lines...
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1982 240D creampuff 370,000 miles
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  #14  
Old 01-23-2006, 04:25 PM
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Quote:
Originally Posted by vwnate1
Uh , no ~ _NOT_ ' totally false ' I replaced all 5 injectors in my NA '78 300CD ad it wouldn't start untill I cranked it with the injector lines cracked to bleed out the air ~ I tried crankig it floored and every other way too , it coughed a few times but made no real efort to start ~ once the lines were bled it lit off before I could get # 3 snugged up......

Only you guys here helped me out by suggesting cracking the injector lines...
That's quite interesting. The SD behaved exactly the opposite. I'm now curious as to what the difference is.

Maybe some other folks can try it both ways and report back.
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  #15  
Old 01-23-2006, 04:27 PM
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I dunno but I ran the battery nearly dead _twice_ trying to make it light off..
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-Nate
1982 240D creampuff 370,000 miles
1978 300CD back from the dead&1980 300CD ~ SOLD
1984 300CD KEEPER ! 430,XXX miles
1984 Euro 300TD Fully optioned SWMBO's
1974 350SLC 4 speed stickshift SOLD & missed
Krazy Kommie Ural Motos (3)
BMW Moto R60/6 Barn Find, 8,000miles
1959 VW #113 Deuxe Beetle, 36hp engine, stock
Junk, Rust, Arthritis, Crushed Spine,Broken Neck&Back
Memories &Peace Of Mind
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