Noise In The Front Of The Engine

I didn't pull the timing cover off today, I only the pulley off. I replaced the seal when I removed the timing cover weeks ago while I was working on it.

It isn't leaking with the pulley off, so I can only assume that the seal is working....

 

I think that groove shows the pulley is (or has been) off-centered. Big no-no.

Since it was manufactured to be concentric, the bore and/or the key must have been oversized and it jammed in a non-concentric position. Either that or the tip of the crank is extremely f-ed up, which would be very unfortunate.

 

Hi All,

Visually the end of the crank looks OK, I sure hope it is. I have a new pulley ordered so I will post an update next week after it gets here and I get it installed.

Thanks for all the help...

 

Will Do, Thanks...

 

If that collar was running that off-center without an oil leak, I’m more concerned about your oiling situation up front.

Concerning the key, the rubbing occurred at the keyway, which would imply a key was used that was too tall, which doesn’t make much sense since the collar is a slip fit over the crank, IIRC. Something seems off.

 

Use care when installing the new pulley and key. I have seen where when installing the pulley, it also pushed the key further into the crankshaft's keyway causing it to ride up onto the radius at the back of the keyway. This prevented the pulley from being correctly aligned and true to the crank.

 

You said that the timing cover was removed previously, Was it reinstalled and lined up correctly? Was the new oil seal correctly installed, correct oil seal? What about the oil slinger washer is it in the correct location, installed or turned the wrong , undamaged? When oil pan was reinstalled did you use the same length bolts in the front area that bolts the oil pan to the timing cover? Lots of things to check if there is no run out of the crank shaft end. Just thinking out loud, I could be way off.

 

Just had another thought. Could the front main bearing cap bolts be loose? Causing the crank to flex downward when the front piston is comming up on compression stroke? However it would probably have low oil pressure or make a hammering noise if that was the case. Just trying to think out side the norm.

 

Hi All,

Thanks for all the ideas. We Pulled the oil pan and the timing cover, after cleaning and checking everything we were careful to put everything back correctly. The oil seal was the model that our part supplier recommended, I confirmed by looking up the part on the manufacturers website and visually comparing to the old one. We got new bolts all around but where sure to match the ones that were there.

The ideas about the key riding high is something I really am concerned about. I don't remember having any issues but I can see how that would cause this issue. When I pulled the pulley (which was tight had to use a puller) the key looked ok but I would like to install a new one, does anyone know if I can replace the key without removing the timing cover. The new pulley will not be here till next week sometime.

Thanks Again...

 

If you have one or access to a dial indicator, mount and check the crank end before you mount your new pulley.

 

This.

 

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Ah, what was I thinking.

 

"X2."

I would try a dial indicator, or something like that.