Question about 2006 Ford Freestar Wagon
The car has a bad lower end knock and I suspect a rod bearing is bad. I would like to replace the rod bearings to get a couple of more years out of the car.
More than likely your crankshaft will be as bad as the rod insert.
Posted on Nov 25, 2014
The answer is no and as stated the crankshaft is all scored up and in order for you to pull out the piston rod you have to pull the head and pull out the piston from the top , you would need cut the crank so it is not wise to even try to do it while in the car anyhow ,never comes out right , something a young kid would try will last about a day
Posted on Nov 25, 2014
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Posted on Jan 02, 2017
Hi Bill 609!
Definitely sound like a rod insert to me. With my practiced ear, I cna tell the difference between a main bearing knock (deeper sound, more of a thudding noise), rod bearing knock (not so deep, gets louder as the engine revs, kind of a rat-tat-tat-tapping noise), and a wrist-pin knock (not quite as loud or deep and gets louder with decelerating RPM).
You can tell which cylinder the knock is on by removing the spark wires to each cylinder one at a time while the engine is still cold enough to knock. (Don't get shocked!)... when you hit the right one, the knock will noticeably quieten or possibly quit altogether!
The 300 Six is a tough old motor and I have seen them survive for years with rod knocks... Just allow the engine ample warm-up time before driving, drive on the conservative side, and keep an eye on oil level and pressure.
An oil and filter change to a higher viscosity oil with a can of STP Oil Treatment (Or something similar) is a good band-aid fix for now, I would recommend Castrol GTX 20/50w... in my opinion, Castrol is the best brand out there, I use it religiously - - - I have a customer with a Chevy Suburban who has followed my advice and adhered to good maintenance discipline that has racked up over 300,000 miles on the original small block and no consumption or engine issues, and is still running strong!
Bill, the temporary fix will work for a while, hopefully a long while --- BUT when it reaches the point that the knock doesn't go away, it is time to park it until the real repair can be done --- otherwise you risk throwing a rod and destroying your engine beyond repair!!!
Please don't hesitate to post a comment or ask if you have further questions. I hope this information answers your question and concerns and wish you well with the Ford. *** And remember to rate my assistance... Your rating is my only compensation for helping you in the free blog!!!***
Posted on Jun 27, 2008
If you hear it knocking no bearing replacement is going to fix that long term. Its best to pull it, the crank shaft will have to be turned or polished and or replaced, weather its a rod or a maine, and posibly line boared if its a maine thats knocking. Do it right and pull it.
Posted on Apr 10, 2009
There is a Ford "motor repair book" at most auto supply stores (not just a typical repair book).
If you have not done this before, it is somewhat of a challenge.
example: You must measure (to the micromillimeter) how much wear has been done to the piston rod end and the crankshaft so that you know what size (thickness) the replacement bearings should be. You just don't buy any bearings without measuring.
I would like to ask: Why are you doing this? You may not need to do it. Are you trying to stop an oil leak? replace seals?
Hope this helps!
Posted on Sep 03, 2009
SOURCE: I have a 2002 ford
you need to pull the engine. and a bearing will not cause a knock. if it is a base engine knock you probably have a broken push rod, but it is always good to make sure its not just your catalytic converters knocking
Posted on Mar 30, 2011
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