Q: Truck wont start on its own needs throttle to start

asked by on October 04, 2016

I have a 97 cummins 12v that wont start on its own i have to give it throttle to start if i dont it will fire but not stay running when i get the truck to run it will stay running but bog down here and there also when i put it reverse or drive it will also bog down and almost stall at some times it just started to happen my engine temps rise quickly and if i let off gas it will cool down fast. i wanna know what is causing my truck to bog and why do i have to give it lots of throttle to keep it running the truck also has a small oil leak in timing cover.

My car has 303859 miles.
My car has an automatic transmission.

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