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post #1 of (permalink) Old 02-16-2003, 10:18 AM
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Fram filter question

I just flushed the engine and changed the oil in the 304 (CJ-7) and now it has a slight tapping,maybe lifters,or valves sticking.Read several threads on other boards that say they had same thing happen to their motor while using Fram oil filter with their same motor,but when replaced it with a diff filter tapping stopped!Also engine didn't idle up and down till oil change, could there be a coincidence?motor dies run strong!Oh and did the TFI upgrade at the same time as oil change.I know this is far fetched but maybe someone else had same thing happen to them and has the magic fix.PLEASE<PLEASE<PLEASE


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post #2 of (permalink) Old 02-16-2003, 04:56 PM
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Re: Fram filter question

http://www.frankhunt.com/FRANK/corve...lterstudy.html
I go with Purolator or AC Delco now.
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post #3 of (permalink) Old 02-16-2003, 05:58 PM
 
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Re: Fram filter question

Can't imagine an oil filter being the cause of tapping in lifters, unless the fine grade of filter is creating a delta psi. Enough oil can't get to the lifters. This then would lead me to believe the pump is a little weak.

</font><blockquote><font class="small">In reply to:</font><hr />
Also engine didn't idle up and down till oil change, could there be a coincidence

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Could this possibly have something to do with the ignition system after the TFI upgrade??????
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post #4 of (permalink) Old 02-16-2003, 07:12 PM
 
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Re: Fram filter question

The article on the filters is interesting. I can understand that a poorly designed leakback valve in the filter could result in the unpriming of the system and some initial lifter noise due to a lack of initial flow, but that should quickly go away after a moment of running, just as it does after changing filters.

Have you changed the type of oil you used? I found that when I had a faulty lifter, thicker oils actually made it worse (contrary to the claims on the bottle of additive). Also, it's possible that if you used a detergent agent to flush your system, it may have stirred up some solids that are now blocking a passage.
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post #5 of (permalink) Old 02-17-2003, 07:02 AM
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Re: Fram filter question

http://www.rislone.com/
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