Medium and Heavy Trucks
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Hi Don, My name is***** will be glad to try to help. I see you replaced both the regulator at the back of the head and the transfer pump already. Be sure there are not leaks or restrictions in the system as when you tried running from a bucket it would have confirmed this as well. Are you showing any fault codes? Try pressurizing the fuel rail with air to check for leaks. A common problem for a no start condition is failed speed timing sensors on the LH side behind the front timing cover causing a loss of engine speed signal to the ECM and the injectors will not be commanded on. It sounds like you do not have any fuel supply pressure at all? What size gauge are you using and are you checking at the filter housing?
What chassis is this engine in? Do you have the hand primer pump on yours? Check for any leaks on the suction side and that your return is not plugged.
Be sure the connection is air tight and try going direct to the transfer pump. Test your pressure at the filter housing. Let me know what you read for pressure
Let me know the results.
Sounds like you might have a faulty transfer pump right out of the box if it is not picking up any fuel.
Hi Don, did you get this resolved?