Bent intake pushrod?
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Junior User
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From: The great white north
Bent intake pushrod?
I have somehow bent an intake pushrod on my 1997 f350 crew cab long box 4x4 dually with a 7.3. It bent the pushrod to almost a 90 and blew the lifter apart and I cant seem to figure out why. I have the head off and there has been no piston to valve contact. Anybody have any idea what would cause this? I don't want to put it all back together to have it blow another lifter apart.
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Junior User
Joined: Sep 2016
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From: The great white north
Heres a pic of the pushrod that gave up.
I did find what I think is the problem. The intake valves are completly shot. This must have collapsed the lifter and bent the pushrod. There was a slightly bent pushrod on the drivers side of the motor aswell.
An exhaust valve for comparison. The exhaust valves are pitted but show no signs of being worn like the intakes.
Looks like the top end of the motor needs to be redone. I will probably start a build thread for this truck as im rebuilding it.
Cargo Master
Joined: Jul 2009
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From: Des Moines
With the pic being side on it’s hard to tell but is that intake valve (or any others) burned? What is the condition of the valve seat and guide?
I’ve done a few head gasket replacements due to coolant leaks and collapsed lifters but I’m yet to experience any mechanical damage like that.
I’ve done a few head gasket replacements due to coolant leaks and collapsed lifters but I’m yet to experience any mechanical damage like that.
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Joined: Feb 2012
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I have somehow bent an intake pushrod on my 1997 f350 crew cab long box 4x4 dually with a 7.3. It bent the pushrod to almost a 90 and blew the lifter apart and I cant seem to figure out why. I have the head off and there has been no piston to valve contact. Anybody have any idea what would cause this? I don't want to put it all back together to have it blow another lifter apart.
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SkySkiJason
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Nov 19, 2025 12:43 PM
