Collapsed lifter, bent pushrod
#1
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Location: Centereach, NY
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Collapsed lifter, bent pushrod
1989 gen IV 454 mervruiser
Hey guys i have an issue on my motor...i opened it up and discovered om the number 4 cylinder that the lifter collapsed on the exhaust side...im hoping that as i was running 3000rpms the side effect was that pushrod bent (on intake same cylinder)as it couldnt open valve becuase of first issue....just looking for some insite on the issue. I will be replacing both pieces...
Thanks,Harry
Hey guys i have an issue on my motor...i opened it up and discovered om the number 4 cylinder that the lifter collapsed on the exhaust side...im hoping that as i was running 3000rpms the side effect was that pushrod bent (on intake same cylinder)as it couldnt open valve becuase of first issue....just looking for some insite on the issue. I will be replacing both pieces...
Thanks,Harry
#4
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Sounds more like you had a stuck valve and the pushrod got bent because the valve was either froze in the guide or there was water in the cylinder when you 1st went to crank it up.
Redid a 2 - 454s last year in a cruiser that had this issue. Collapsed lifter could be a after result of the problem also.
Redid a 2 - 454s last year in a cruiser that had this issue. Collapsed lifter could be a after result of the problem also.
#5
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Sometimes they just fail. Had one swell inside the liter bore this spring. Nothing like that has happened before.
fyi, it's a Mark IV. When you say "Gen" anything people naturally think its a newer motor.
fyi, it's a Mark IV. When you say "Gen" anything people naturally think its a newer motor.
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So, your thinking intake pushrod bent because of trying to open against the pressure of a non-evacuated cylinder due to the innards coming out of exhaust lifter ?