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2000 GMC Topkick with 3126 Cat will not start without ether.

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2000 GMC Topkick with...

2000 GMC Topkick with 3126 Cat will not start without ether. Seems ok once its running but if you slow down to stop it will die and will not restart without ether. Replace the fuel pressure regulator on the pump and the pressure sensor. No help. Afraid to go anywhere in it.

Mechanic's Assistant: What is the complete model and serial number of your machine?

8YL66767

Submitted: 5 years ago.Category: Medium and Heavy Trucks
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Answered in 2 minutes by:
8/22/2017
Technician: Cat Man, Cat Engine Expert replied 5 years ago
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
Verified
Thanks for asking your question. I will try and help you out.
Do you know if there are any codes in the ecm?
Has the fuel pressure been checked while cranking or driving?
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