"97" 7.3 will not start????
Hotshot
Joined: Dec 2005
Posts: 14,376
Likes: 605
From: evansville in
Check system voltage while cranking.it MUST be over 10.5 volts..it won't run otherwise.EVEN if it sounds like it is cranking fine.
Then...pull idm and check it for water.its the module mounted on driver fender that you can see the whole module.
Then...pull idm and check it for water.its the module mounted on driver fender that you can see the whole module.
Lead Driver
Joined: Mar 2006
Posts: 5,105
Likes: 1,523
From: western SD
If you still have the fuel bowl, you don' have true electric fuel. The mechanical pump is a 2 stage pump, low pressure to the filter,and back to the pump for high pressure to the injectors. The inline low pressure pump will fill the fuel bowl, but will not run the high pressure to the injectors.
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Junior User
Joined: Jun 2013
Posts: 72
Likes: 0
thanks guys, yes i am sorry not to explain my self yesterday i wosnt sure whats what on these diesel trucks learning as i go. yes it is a extra in line fuel pump do not know anything about it, but he said he put one in.
Lead Driver
Joined: Mar 2006
Posts: 5,105
Likes: 1,523
From: western SD
My gut is telling me the mechanical pump died, and the P.O. installed an electric pump thinking this would give it fuel. If you remove the electric pump and check the fuel pressure while cranking and don't get 20 lbs, the mechanical pump has given up the ghost, and needs replaced. It will run on either, so this says it is not getting fuel to the injectors. The question is why.
Logistics Pro
Joined: Oct 2008
Posts: 4,818
Likes: 1
From: Avilla, IN
There are no pumps in the tanks on these trucks. In a stock set-up the pump sucks fuel up to the engine. You should be able to disconnect the in-line electric pump, stick the hose in a can and see if it builds fuel pressure.