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Discussion Starter · #1 ·
Just replaced rings and piston pin on my 2000 450ES because of rather loud noise coming from cylinder and some smoke. Rings were obviously worn along with pin. Cylinder wall and rod were both okay. Did not bore... went back stock. Still has same high pitch, loud tapping coming from head. Valves were adjusted out to .006" at TCD and were in rather decent shape. Springs, rods, rockers all seemed fine. I did run a little seafoam in the last oil change. Can this affect the lubrication of the top end? Oil temp light was working last time I rode. May be running "hot" with little or no lubrication of the top end. Scared to run it like this!! How would I know if its getting oil??? What else could be making the loud noise??? HELP!!
 

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Take off the round covers used for adjusting the valves and start it to see if your getting oil
 

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I don't really know about the seafoam, but do what 450RMAN said to do in the other post, take the valve inspection covers off and start it and you will be able to see if it's getting oil to the top of the engine.

ADDED: Nevermind, looks like 450RMAN and I, were typing at the same time. LOL.
 

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I don't really know about the seafoam, but do what 450RMAN said to do in the other post, take the valve inspection covers off and start it and you will be able to see if it's getting oil to the top of the engine.

ADDED: Nevermind, looks like 450RMAN and I, were typing at the same time. LOL.
Great minds think alike, This must mean your a EVIL genius like me MUHAHAHAHA!
 

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I don't really know about the seafoam, but do what 450RMAN said to do in the other post, take the valve inspection covers off and start it and you will be able to see if it's getting oil to the top of the engine.

ADDED: Nevermind, looks like 450RMAN and I, were typing at the same time. LOL.
Great minds think alike, This must mean your a EVIL genius like me MUHAHAHAHA!
Yeah, it's possible. LOL.
 

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Discussion Starter · #6 ·
I guess the circulation ports could get clogged somehow if the oil was not clean. How does the oil get "pumped" up top anyway???
 

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you should verify no oil at top end first work your way back to the pump sometimes varnish helps you keep oil pressure if the seafoam cleaned it you may not have pressure or poss a clog somewhere but the guys above have done this and are giving you good advice gl hope its something little
 

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I guess the circulation ports could get clogged somehow if the oil was not clean. How does the oil get "pumped" up top anyway???
There's a hole that runs from the block, where the oil pump is, up through the side of the cylinder.
 
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