engine knock or lifters
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Senior User
Joined: Dec 2003
Posts: 222
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From: Washington State
engine knock or lifters
A couple months ago I took my 94 aero in to have them install a water pump after I got it back I noticed a slight knock. I asked the mecanic about it and he said he heard a lifter. Well scince then the knock has gotten worse. I started to think it was a rod or something. I went ahead and did that seafoam thing to my engine and the knock stopped. But then after driving it tonight the knock was back. my queston is if this was a rod or bearing wouldn't it always make noise
Lead Driver
Joined: Oct 2004
Posts: 8,062
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From: Central Oregon
I have 2 Aeros with the 4.0 engines and both had knocks in the engines. One of them, my wife 90 we replaced the engine and was told that the knock was a broken valve guide, the other one sounds the same but it has never been fixed, it died of other causes.
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Postmaster
Joined: Apr 2001
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Strange, that this knock would appear after water pump work and then be intermittent in nature. I would suggest taking off the serpentine belt and then start the van for a brief interval to see if the knock is related to any belt driven component. If it still knocks, then it is likely an internal engine problem. Also, while the belt is off, grab ahold of the fan clutch and see if there is any appreciable slop in either the fan clutch mounting or the pump shaft. Try to move it both up and down and fore and aft.
Last edited by aerocolorado; Aug 29, 2006 at 01:23 PM.
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Lead Driver
Joined: Sep 2003
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From: SoCal
Originally Posted by JTHill24
Hey guys
I seem to remember someone talking about there being a Clockwise & a Counter-Clockwise waterpump for these Aerostars.
If so I wonder if the Mechanic put the wrong pump on.
JaY
I seem to remember someone talking about there being a Clockwise & a Counter-Clockwise waterpump for these Aerostars.
If so I wonder if the Mechanic put the wrong pump on.
JaY
Posting Guru
Joined: Aug 2002
Posts: 1,041
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From: Orland USA
So what you are saying is: The fins inside the pump are different.
One was made to pump turning Clockwise
and one was made to pump turning Counter-Clockwise.
If so then that is what I was trying to say.
JaY
One was made to pump turning Clockwise
and one was made to pump turning Counter-Clockwise.
If so then that is what I was trying to say.
JaY
Post Fiend
Joined: Oct 2005
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From: Kiev, Ukraine
To remove oil pan is easy... but difficult to take it back carefully to install gasket well without leaks... Be accurate... ore engine will leak more oil then can birn... and you'll have to replace gasket. Use RTV to awoid leaking.