Bent Pushrods

[maxstu]

1989 DJ2.1 cylinders 3 and 4

What would cause both inlet pushrods to dramatically bend as in photo?

[davidoft1]

Stuck valve or cam follower generally

[maxstu]

Thanks David.
Strange it has happened on both inlet valves?
You would have thought the exhausts valve are more susceptible to sticking.

[Cecil]

Thanks David.
Strange it has happened on both inlet valves?
You would have thought the exhausts valve are more susceptible to sticking.



I’m am currently working on my Austin 7 ruby for the second time in a week because of stuck inlet valves ( all 4 ) exhaust valves are not affected . The symptoms were, runs ok but no compression when I go to start it next time from cold. I have now drained the petrol from the tank hoping the cause is attempting to use ancient petrol. Something maybe t3 owners who lay up their vans for the winter  (or longer )should be wary of !

  Advantage of side valve engine seems  to be that
cam followers just force valves to the open position . No pushrods to get bent!

[davidoft1]

Thanks David.
Strange it has happened on both inlet valves?
You would have thought the exhausts valve are more susceptible to sticking.

Could be lack of oil at the top end but perhaps getting hot , have you checked for air locks ?

[maxstu]

Thanks to both for the information. It is food for thought.
Back with the owner next Thursday. We did start the engine last year and it was a bit noisy (suspected tappet drain) but idled okay. . But then it was put on hold for various reasons.
Recently we managed to start engine again. However, after a few minutes idling, this time the BOD came on and oil started leaking from underneath the engine.
It was quickly turned off and l found two pushrod so severely bent they had dislodge and prevented the tubes from spilling engine oil.
Will update next week