Diesel RVs: Re: [diesel_mercedes] Loping OM616 injection pump test video

Nate:

Are you then suggesting, possibly, that perhaps the check valve is not seating properly? What else could be wrong inside there. Forgive me, but it is my nature to want to know WHY something is the way it is - not just WHAT to do or not do. By the way, I can get fuel to move down the line to bleed the line when reassembling. So there is fuel moving out toward the injector when the line is "open" or "cracked open" at the end, but not when the injector is tightly attached.

It's too late for me to not touch the 13mm ATF nuts. That is how I equalize fuel delivery on a per stroke basis between the outlets. 5-6 revolutions of the shaft produces less than 1 mm of difference in the height of the fuel (in clear plastic pipes 3mm in diameter) across all four outlets by rotating these outlets. I know it affects the injection timing too. so what is more important - exact timing or amount of fuel delivered?

I have had 2 new intake screens on this rig in the last 400 miles. I have also taken off the tank and cleaned it out thoroughly. There was a trace of water in it and some of that was getting into the intake screen and even the main filter. I always pour out the contents of my fuel filters when I change them. Amazing how much water can be in the bottom of those things. That is why I pulled and cleaned the tank - I noticed some water in the clear intake screen.

Otherwise thanks for the hope that it is only a dirty or faulty outlet part.

Bogy.

"Hardware eventually fails. Software eventually works" - Michael Hartung

From: "vwnate1@yahoo.com [diesel_mercedes]" <diesel_mercedes@yahoogroups.com>
To: diesel_mercedes@yahoogroups.com
Sent: Sunday, July 31, 2016 7:44 AM

Subject: [diesel_mercedes] Loping OM616 injection pump test video

Very good Bogy ;

Now , remove the # 4 injector pipe from the IP and using a 15 MM six point deep socket , remove the delivery valve and swab down in the open hole with clean Q-Tips and some brake cleaner or engine starting fluid ~ the amount of crud and tiny water drops I found in my worn out IP amazed me .

The elements in the delivery valve were also rusty (!) before I found good one , I made do my wire brushing them well before washing HOSPITAL CLEAN then re assembling .

DO NOT touch the two 13MM ATF nuts on the top of the IP !! .

Failures like this are why Mercedes wants you to use a CLEAR PLASTIC fuel intake screen .

Change it ASAP , Auto Zone and Pep Boys both stock the correct clear plastic version .

-Nate
Bogy wrote :

Let's see if this works.

"Hardware eventually fails. Software eventually works" - Michael Hartung

__._,_.___

Posted by: Bogy Wan Kenobi <polespearbogy@yahoo.com>

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