460d hard to start when hot

milo7890 · Aug 1, 2011

Got a 460 diesel that ran great until the last 2 weeks or so. Guess should say runs fine yet, just when its hot it doesnt want to start. When its cold it starts great. Is my pump getting weak? Motor had in-frame rebuild about 50 hours ago, glow plug it for 30 seconds and starts instantly when the motor is cold. Run it for an hour and shut it off for 5 minutes, glow plug it for 30 seconds and got to grind on it for about 1 minute. Fuel filters new, glow plugs all work, Im thinkin pump?

DeltaRed · Aug 1, 2011

Your pump is bad,worn out.tine for a new/rebuilt one.

pete 23 · Aug 1, 2011

You might be lucky, some times the delivery valve stop screw comes loose and you have that exact symptom. If you intend to take pump off for repair anyway, you could pull the transfer pump off the end and there is an allen headed screw in end of rotor. Just check to see if it is loose. It does happen. Torque it to about 90 inch pounds of torque. If it isn't loose you have lost nothing except a few minutes of time.

460d hard to start when hot

milo7890

New User

DeltaRed

Well-known Member

pete 23

Well-known Member

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