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  #16  
Old 09-18-2016, 08:46 PM
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I have primed the pump. The priming hand pump does not leak.

It only took about 20 pumps to get fuel from the tank to the IP.

The clear lines are the return lines from the pump to the filter back to the tank.

I have not tried to prime the pump more then 20 times. I just did it until I had fuel flowing back out of the return line on the filter.


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  #17  
Old 09-18-2016, 08:47 PM
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I have not cracked the injectors for awhile. I could try that again.


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  #18  
Old 09-18-2016, 09:22 PM
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It looks like something.... maybe fuel... .is leaking onto the engine mount arm.. if it is leaking there is the chance of air...
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  #19  
Old 09-18-2016, 09:32 PM
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OP, where are you located at?

Haven't seen it mentioned yet, but are you holding the throttle wide open while cranking? That'll shorten your purge time considerably.

I've cracked the lines open at the injectors and cranked until I got fuel, but I've also just pumped the primer pump until I stopped getting air out of the IP and then cranked it over with my foot flat on the floor until it started. Under a minute every time.

What does the grey smoke out of the turbo smell like? Is it raw diesel?

Did you adjust the valves and check compression?
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  #20  
Old 09-18-2016, 09:38 PM
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I'm located in Layton UT.

The smoke smells like burned diesel. But mixed with some raw diesel.


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  #21  
Old 09-18-2016, 10:03 PM
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As stated by the OP, the shut off lever is not connected and the shut off valve has no vacuum. Mercedes starters are strong but to continually crank the engine in excess of 20 -30 seconds is asking for trouble, especially when the presence of fuel at the injectors has not been checked. Put your hand on a starter that has been cranked a long time and you will feel how hot it gets.
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  #22  
Old 09-18-2016, 10:31 PM
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The starter cranking speed sounds slow. Weak starter? Weak battery? Bad elec. connections? Combinations of the above? Faster cranking speed = more heat in cylinders. There is a minimum cranking speed required for the diesel fuel to ignite.
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  #23  
Old 09-19-2016, 08:45 AM
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New battery, new starter.

The battery only has 750 CCA which isn't too good. Sears diehard batteries are really becoming garbage. I've replaced it 3 times now. They just die. I've had them just sitting unhooked in the Range Rover for a year and they won't charge.

I'm thinking about getting the batteries out of my Powerstroke to try to start it.

Maybe I should run dual batteries in my Range Rover. It has two battery trays.

I have the block and starter grounded well. I have used 0/1 gauge welding cables for ground wire and positive power.

I think that diehard battery is garbage.


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  #24  
Old 09-19-2016, 09:02 AM
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The MB diesel battery is 1000 CCA. If you are near an Interstate battery warehouse, they may have group 49 AGM take offs from Mercedes for $40
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  #25  
Old 09-19-2016, 09:13 AM
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When you pump the primer pump does it get progressively harder to pump? Then you should hear a kind of squeal when the relief valve opens on the injection pump as the intended operational pressure has been reached with the primer pump. If not the relief valve is constantly open and the engine may not start.
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  #26  
Old 09-19-2016, 09:29 AM
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Here are a few sound clips of 617's cranking at a few different rpm's
Starter cranking RPM sound files

In your video, I noticed uneven cranking sounds. Are valves adjusted? Did you do a compression test?
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  #27  
Old 09-19-2016, 10:03 AM
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This one 164 rpm Video_030911_001.mp4 Video by funola | Photobucket

had a rebuilt starter but the battery was old.

I'll try to find one with a fresh battery/ starter cranking @ 180 rpm which is what's normal.

Edit: The cranking rpm is for info only for later on. If the ambient is above 70 F, your current cranking rpm, although not ideal, should be sufficient to start the engine if:

1. There is fuel with no air
2. Good compression in all cylinders
3. glow plugs working
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Last edited by funola; 09-19-2016 at 10:30 AM.
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  #28  
Old 09-19-2016, 10:43 AM
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It also will run on WD40 if you remove the air cleaner and spray it in the intake while cranking.
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  #29  
Old 09-19-2016, 11:23 AM
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Quote:
Originally Posted by t walgamuth View Post
It also will run on WD40 if you remove the air cleaner and spray it in the intake while cranking.
Which will immediately , if it starts, tell you that it IS the lack of fuel keeping it from starting....

Now waiting for those OCD handwringers who will say that that will blow up the engine... check the archives.. this is has been discussed and pronouncements ' ex cathedra' from moderator Hunter rule the day ... due not to them being ' ex cathedra' but due to the physics of the situation.....
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  #30  
Old 09-19-2016, 11:29 AM
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WD-40 alone will not guaranty the engine will fire, BTDT. Engine needs enough compression and cranking RPM. I had an engine with good compression but a weak starter motor and I was unable to get it to fire by spraying in WD-40 due to very slow cranking (around 120 rpm).

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