Need help ??? Bad lifter ??
Thread Starter
Joined: Apr 2006
Posts: 182
Likes: 1
From: m'boro tenneessee
Need help ??? Bad lifter ?? Hoping its a bad lifter. it sound like most the video I could fine of bad lifters. Doesn't seem to be noisy enough for a bearing and it holds full oil pressure
Knocking noise right after transmission work, I'd be checking the torque converter bolts.
If you shoot another video, back it out of the garage. The background noise is way too loud.
If you shoot another video, back it out of the garage. The background noise is way too loud.
Thread Starter
Joined: Apr 2006
Posts: 182
Likes: 1
From: m'boro tenneessee
Ill do some more videos this weekend. I have to put the lid and filter back on and hook it up. I was just starting a tear down ,when I released it could be something I can fix with a engine flush and oil change .
in the mean time here is 1 from under the car
in the mean time here is 1 from under the car
Last edited by fastfbody; May 15, 2018 at 06:36 PM.
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Thread Starter
Joined: Apr 2006
Posts: 182
Likes: 1
From: m'boro tenneessee
The only the thing that makes me think it might be the converter bolts or something. Is the sound showed up 1 week after having the trans built . DO you just tap the bearing back in with a rubber mallet ?
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Well if that noise showed up after the trans build the 1st thing I'd be checking is the trans. Get under there and pull the convertor bolts out then start the engine. Without the t convertor connected if noise goes away it is time check the flex plate etc.
As far as if it has a worn pounded out bearing the bearing needs to be replaced. Not hard to do but you will need some guidance for sure. The stock bearings are very tough and will take a hell of a beating BUT what can happen from abuse is the bearing gets pounded out thin and of course it starts to knock and will spin eventually. Also when a rod bearing gets pounded thin the piston can hit the cylinder head and that's the light tapping you maybe hearing. Of course before just tearing into this you have to do some diagnoses, maybe buy a stethoscope and unload the cylinders one at a time till you find the noisy cylinder.
As far as if it has a worn pounded out bearing the bearing needs to be replaced. Not hard to do but you will need some guidance for sure. The stock bearings are very tough and will take a hell of a beating BUT what can happen from abuse is the bearing gets pounded out thin and of course it starts to knock and will spin eventually. Also when a rod bearing gets pounded thin the piston can hit the cylinder head and that's the light tapping you maybe hearing. Of course before just tearing into this you have to do some diagnoses, maybe buy a stethoscope and unload the cylinders one at a time till you find the noisy cylinder.
Thread Starter
Joined: Apr 2006
Posts: 182
Likes: 1
From: m'boro tenneessee
Well if that noise showed up after the trans build the 1st thing I'd be checking is the trans. Get under there and pull the convertor bolts out then start the engine. Without the t convertor connected if noise goes away it is time check the flex plate etc.
As far as if it has a worn pounded out bearing the bearing needs to be replaced. Not hard to do but you will need some guidance for sure. The stock bearings are very tough and will take a hell of a beating BUT what can happen from abuse is the bearing gets pounded out thin and of course it starts to knock and will spin eventually. Also when a rod bearing gets pounded thin the piston can hit the cylinder head and that's the light tapping you maybe hearing. Of course before just tearing into this you have to do some diagnoses, maybe buy a stethoscope and unload the cylinders one at a time till you find the noisy cylinder.
As far as if it has a worn pounded out bearing the bearing needs to be replaced. Not hard to do but you will need some guidance for sure. The stock bearings are very tough and will take a hell of a beating BUT what can happen from abuse is the bearing gets pounded out thin and of course it starts to knock and will spin eventually. Also when a rod bearing gets pounded thin the piston can hit the cylinder head and that's the light tapping you maybe hearing. Of course before just tearing into this you have to do some diagnoses, maybe buy a stethoscope and unload the cylinders one at a time till you find the noisy cylinder.
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Joined: Mar 2013
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Bearing is not magnetic, unload the cylinders one at a time till you find the noisy one. Just unplug each injector one at a time and listen to the engine. If the noise is rod-piston related it will go quiet when there is no load on that cylinder. I would pull the oil filter carefully cut it open then inspect the filter media for signs of a bearing problem but if its just pounded thin there may be none.
TECH Enthusiast
Joined: Nov 2017
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From: S.F. East bay
I would definitely check for cracks in your flex plate or loose converter bolts........but I'm sure someone already mentioned that......I had a old Buick 350......same problem.....didn't know till after I i swapped in a chevy, that's when I noticed 2 cracks in The flex plate....after the motor was out and the new one was in......that was also 20yrs ago, a little smarter now....I think
Thread Starter
Joined: Apr 2006
Posts: 182
Likes: 1
From: m'boro tenneessee
I would definitely check for cracks in your flex plate or loose converter bolts........but I'm sure someone already mentioned that......I had a old Buick 350......same problem.....didn't know till after I i swapped in a chevy, that's when I noticed 2 cracks in The flex plate....after the motor was out and the new one was in......that was also 20yrs ago, a little smarter now....I think
TECH Enthusiast
Joined: Nov 2017
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From: S.F. East bay
I suggest you check them converter bolts and flex plate. .......but Yea I wanna agree with you and say it's not engine related. ....hopefully ! Could also be your pump on the trans, knocked outta place during install? is the tranny leaking?
Thread Starter
Joined: Apr 2006
Posts: 182
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From: m'boro tenneessee
it been in my shop for months after this. was preparing to rebuild engine. no leak at all.
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From: White Bear, Mn
It is all but impossible to judge things by cell phone videos but if it were me I would start by pulling the valve covers and check for a loose rocker/ collapsed lifter. Then I would pull the starter and check for a loose converter bolt.
Thread Starter
Joined: Apr 2006
Posts: 182
Likes: 1
From: m'boro tenneessee
It's not the transmission pump. The pump can not be knocked out of place. You can crack the pump/ rotor from a botched converter install but if you have driven it even 1 mile your pump is not cracked and it would not make noise.
It is all but impossible to judge things by cell phone videos but if it were me I would start by pulling the valve covers and check for a loose rocker/ collapsed lifter. Then I would pull the starter and check for a loose converter bolt.
It is all but impossible to judge things by cell phone videos but if it were me I would start by pulling the valve covers and check for a loose rocker/ collapsed lifter. Then I would pull the starter and check for a loose converter bolt.