One bent pushrod

[jims73z]

Motor has 40,000 miles since heads and cam and started running terrible.
I found a bent pushrod on rear passenger exhaust. Without a compressor is there a way to check for a bent valve ? Are there any other things I should check for ? I don't see any obvious signs of a bad spring.

 

[High Country Z]

Do a compression test.

 

[hhott71]

change the pushrod and start it, what can you hurt?

 

[cmonson]

agree with above. what kind of lifter were you using? How was your valve terrain geometry?

A bent push rod is tough to do unless something is out of line, or a lifter was not adjusted properly. Funny how it lasted 40K miles however. Could also just be a faulty part which does happen.

 

[High Country Z]

Could also be a wiped cam.

 

[jims73z]

I remember checking the geometry, there was nothing unusual about my set up.
trick flow 23 degree heads xe268 hydraulic cam and lifters
comp roller tipped 1.5 rockers, I'm thinking maybe a lifter just backed off too much. Will check back after I get running again. Thanks all.

 

[jims73z]

Could also be a wiped cam.

The oil is clean but that has also crossed my mind.......

 

[[email protected]]

More often the not a bent pushie or other failed items lead to other problems. It all started for a reason so somewhere you might have another problem coming. How did you rockers look where they sat on valves...any strange noises or change in exhaust sounds lately.

 

[z28rod]

compression test first thing.

 

[Stroked72SS]

A valve guide clearance issue as well....I'd investigate that if at all possible...