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Old 10-08-2013, 02:38 PM
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That picture of the solenoid is helpful. From what I read, the standard test for a worn pump is the cold water test--when failing to start when hot, pour cold water on the IP. If it starts, it's a bad pump. but I wondered if the cold water might also stimulate a stuck shut off solenoid to release.
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Old 10-09-2013, 02:48 PM
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Quote:
Originally Posted by kerry View Post
That picture of the solenoid is helpful. From what I read, the standard test for a worn pump is the cold water test--when failing to start when hot, pour cold water on the IP. If it starts, it's a bad pump. but I wondered if the cold water might also stimulate a stuck shut off solenoid to release.
It is the other way around.
When Solenoid does not work the Spring keeps the Lever in the shutoff Position. When you turn the Key on to start or run the Solenoid gets voltage and that Lever is pulled back and held there until the Voltage is cut off.

Scribe a line on both Sides of the Cover so it goes back in Exactly the same place.

The only Field Test I know that can be done is to remove the Cover. However, I have no idea what also might be on that Year and Model of Cover.
If you remove the Cover and the Engine Starts Hot like that it very likely the shutoff Solenoid.

(I can not remember if the Cover has tamper proof Screws or not?)

While putting the cover back on is not hard it is possible to mess that up. If you look at that pic 1project2many posted you can see how the Solenoid Lever goes to the left of the Metering Valve Lever (Black).
What that means is that when the Pump is on the Engine the with you standing in front of the Vehicle facing the Fire Wall; you would install the cover with it partly overhanging to the rear of the Pump (towards the Radiator) and slide if forward so it catches on the Metering Valve.
You will feel a slight amount of spring tension when you do that.
All of the Cover Screw parts need to go back to where they were.

You won't want to run it long as the Governor is going to throw a lot of Fuel out of the Pump.

Putting the IP top Cover on wrong may cause the Engine to Run away.

The below pic is a generic one. Your top cover is likely different. Some setups have a Flat Metal ground Strap, so ground directly to the Cover with washers.
Attached Thumbnails
Non-Mercedes 6.5 GM diesel problem-db2-solenoid-parts.jpg  
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Last edited by Diesel911; 10-09-2013 at 03:14 PM.
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