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| | | | Joined: Jan 2009 Posts: 101 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2009 Posts: 101 | I have a 60 235 ci with original hydra-matic in my 54 pick up. Good oil pressure and tuned recently. When I run it at 55 mph for about ten minutes I begin to hear a loud "clacking" noise. Sounds like lifters or valves. Not a knock. When I slow down, the noise disappears within a minute. Any ideas on what this could be? Thanks in advance.
Disciple
| | | | | Joined: Mar 2005 Posts: 1,636 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 1,636 | Possibly a little bit of sludge is blocking the oil hole to a lifter. At idle it may be able to get enough oil to stay pumped up, but running down the road it may not have enough oil flow to the lifter to keep up with the work it is doing. Kinda like the restricted water lines in my house from 60 years of use. You can flush the toilet, or wash dishes, or use the washing machine, but not any two at the same time.
May have to clean the lifters or any sludge built up in the engine. Someone else should be able to shed more light on your issues. | | | | | Joined: Jan 2009 Posts: 1,644 Shop Shark | | Shop Shark Joined: Jan 2009 Posts: 1,644 | You could try a shot of Marvel mistery oil in the oil that is an old fix for keeping the inside of Your engine clean I have done it and it works , than do an oil change , Pete | | | | | Joined: Jan 2009 Posts: 101 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2009 Posts: 101 | Thanks Wrench Fetcher...I'll try the Marvel Mystery Oil first, and see how that works.
Disciple
| | | | | Joined: Jan 2009 Posts: 101 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2009 Posts: 101 | What does it involve to get to my lifters if I should have to?
Disciple
| | | | | Joined: Aug 2008 Posts: 230 Shop Shark | | Shop Shark Joined: Aug 2008 Posts: 230 | not saying this is it but check your torque converter bolts,they get loose and they will make noise . | | | | | Joined: Jan 2009 Posts: 1,644 Shop Shark | | Shop Shark Joined: Jan 2009 Posts: 1,644 | Tedjr , Gotto take the rocker arms off and remove the side cover than You can get to the lifters not bad but You need a assembly manual to get rockers back in right . I think if its just some dirt the Marvel will help , Pete | | |
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