Starts when cold, not when hot.
Logistics Pro
Joined: Sep 2010
Posts: 4,411
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From: Victor, MT
x3 on IP, do this test(I've proved it to work):
Start her up, get her to operating temperature and then shut it off. pour cool/kinda cold water on the Injection pump and then try to start it again...if it starts, you got pinholes in the diaphram of the IP and it needs to be rebuilt/replaced.
Start her up, get her to operating temperature and then shut it off. pour cool/kinda cold water on the Injection pump and then try to start it again...if it starts, you got pinholes in the diaphram of the IP and it needs to be rebuilt/replaced.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
The easier way to test for an internal hot IP problem is jumping power to the cold advance solenoid and then trying to start it! It should start right up and that means its an internal IP issue.
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Lead Driver
Joined: Nov 2003
Posts: 6,900
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From: Campbell River, B.C.
Just a word of caution with the cold water method. I head that can make the damage worse depending on how much thermal shock is applied.
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Logistics Pro
Joined: Sep 2010
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From: Victor, MT
trust me David...my buddy...well...yeah...he shocked the shi* out of himself when we were wiring in my rear backup lights. It was funny to watch him scream but then I did the exact same thing. Trust me....if there is anything to do with electrical...I can find a way to electrocute myself. It dont matter what kind of system, or what I do...it will happen haha....
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
trust me David...my buddy...well...yeah...he shocked the shi* out of himself when we were wiring in my rear backup lights. It was funny to watch him scream but then I did the exact same thing. Trust me....if there is anything to do with electrical...I can find a way to electrocute myself. It dont matter what kind of system, or what I do...it will happen haha....
A man's got to know his limitations.
I was buzzed once by roughly 160VDC but lucky for me, it didn't quite reach my elbow. Got a tingle once from 12VDC, but that was in an open scrape so the skin was already broken allowing an easier path in.
Elder User
Joined: Mar 2008
Posts: 912
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From: Marianna, Florida USA
x3 on IP, do this test(I've proved it to work):
Start her up, get her to operating temperature and then shut it off. pour cool/kinda cold water on the Injection pump and then try to start it again...if it starts, you got pinholes in the diaphram of the IP and it needs to be rebuilt/replaced.
Start her up, get her to operating temperature and then shut it off. pour cool/kinda cold water on the Injection pump and then try to start it again...if it starts, you got pinholes in the diaphram of the IP and it needs to be rebuilt/replaced.
"Fuel enters the pump inlet under lift pump pressure from the fuel filter, where a vane type transfer pump further pressurizes it." An excellent explaination of how our pumps work can be found at: Oliver Diesel - Engines & Outdoors
I don't know why it works with the cold water, but I'll bet it has to do with the viscosity of the fuel.
Logistics Pro
Joined: Dec 2005
Posts: 4,644
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From: Moro Bay, AR
In another life I used to rebuild the Stanadyne pumps when they were used on early GM engines. The tolerances are so close in the hydraulic head of the pump that you can pull the rotor out and hold it in your hand for 5 seconds and it will not fit back in until the temps are equalized.
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