Running with no oil
Thread Starter
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New User
Joined: Nov 2006
Posts: 20
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From: My house in Pennsylvania.
Running with no oil
Hi guys I have a 1985 F350 diesel I use for towing. I ran my truck with no oil
for about a block. I am now hearing a light knock when I rev. Hoping I did no
damage to the motor. If any body can help me? or should I look in to rebuilding
the motor. Hopping to hear from any body thank you.
__________________
for about a block. I am now hearing a light knock when I rev. Hoping I did no
damage to the motor. If any body can help me? or should I look in to rebuilding
the motor. Hopping to hear from any body thank you.
__________________
Thread Starter
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New User
Joined: Nov 2006
Posts: 20
Likes: 0
From: My house in Pennsylvania.
Thanks TRIKE1946: No it does not knock when I start it up. But it does knock when I rev it up the oil pressure is OK. This just happened yesturday an I will look out for other sounds. I will be in touch thank you for all your help.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Shotgun64,
Welcome to FTE and the IDI diesel forum.
My guess is the rod and main bearings probably took the worst beating on that ordeal.
If the engine has rather high miles on it, the damage may not be to bad.
Welcome to FTE and the IDI diesel forum.
My guess is the rod and main bearings probably took the worst beating on that ordeal.
If the engine has rather high miles on it, the damage may not be to bad.
Senior User
Joined: Nov 2005
Posts: 286
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get it into your shop----NOW--if you can hear a knocking sound--in a diesel--and its is rod bearings--your about that far away from throwing rods--why--because there is a whole lot more compression in a diesel--and once those bearings get real loose--they will really start to pound out--and blow the rods--no joke--seen em--and yes--you can drop the pan--and replace the bearings--without removing the engine---
Senior User
Joined: Apr 2003
Posts: 209
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my high mileage 6.9 knock was caused by piston pin bosses wore out to the point were the pistons started to breake in half it knocked very bad it also had a lot of blow by. take off oil fill cap when it is running and see how much air comes out of hole
