g16 smoking

[smallblock450sl]

[QUOTE=emarch42;69896]hi, dave thanks for responding... ok... all that looks good..except i have ran it for hours..and still smoking... but wait..this is intresthing... if i put it to the floor..and yes the govenor holds it back... it dosent really smoke... but if i just sit there and pump the pedal back and forth..it smokes ...smells real bad...burt oil....now i did have all those problems you said... to much oil..gas in the oil...i cleaned carb...drained oild twice..it really runs great...except it smokes...can i di the head first..and see?? or do you think it is the rings????[/QUOTE Yes the valve job and new valve stem seals , "may take care of your problem" In my opinion.. Rering and valve job and then you no your good for a long time. Later Dave

[smallblock450sl]

Originally Posted by emarch42

one more question...you say take a compression test at wide open??? i just put the tester on and crank it right????

Yep ! Later dave

[scottyb]

Dave, I been kinda hovering on this smokin' thread! (lol) And I got a stupid Q to ask for the boys and girls at home ..Why is the compression test done at WOT? What happens to the results if not done at WOT?

[smallblock450sl]

Originally Posted by scottyb

Dave, I been kinda hovering on this smokin' thread! (lol) And I got a stupid Q to ask for the boys and girls at home ..Why is the compression test done at WOT? What happens to the results if not done at WOT?

Scottyb......Do you have "super powers"? "Hovering" would be "cool"! If I can explain this right...You need the engine "turning over" at a high enough "RPM" to create compression, (so a good battery is needed), You need "wide open throttle" so the engine can preduce the compression reading with all the air it needs to get the "highest" compression reading. Did that explain it ? Or am I just the worst poster trying to awnser a simple question ? Hope this helps. Later Dave

[scottyb]

Yep! That'll do it ! Thanks...

[emarch42]

ok dave. the motor is out.... i took the head off , the exhaust valve was nasty... and there was a small puddle of oil on the top of the piston..and the spark plug look like a plug that was in a motor that was using oil.....now..if you would walk me threw this..it would be great...the clutch has to come off/.... the big nut..is it right hand threed..??? impact wrench??? it won`t come off....and i need a tool , after i get the nut off..right??? and then ............................ talk to me...\
p.s. thanks ahead of time....

[groundpounder]

yes impact wrench works the best. and you will need a Yamaha clutch puller.

[smallblock450sl]

Originally Posted by emarch42

ok dave. the motor is out.... i took the head off , the exhaust valve was nasty... and there was a small puddle of oil on the top of the piston..and the spark plug look like a plug that was in a motor that was using oil.....now..if you would walk me threw this..it would be great...the clutch has to come off/.... the big nut..is it right hand threed..??? impact wrench??? it won`t come off....and i need a tool , after i get the nut off..right??? and then ............................ talk to me...\
p.s. thanks ahead of time....

Didn't take you long to "pull" the motor did it ? Head work...I use a shop rag in the cylinder (to hold the valves) a 17mm open end wrench (to push down the sprin and retainer) and a small screw driver to get out "C" retainer. Decarbonize the head and valves (with a wire brush in a driill-for the head and a wire in your bench grinder-for the valves). If valve seats look good, "lap" them with compond useing a hand drill. At this poit I would take off the valve stem seal (on intake-a screw driver will work to pry it off) and install new stem seals "ON BOTH INTAKE AND EXHAUST", Yamaha only installed one on intake ? Your cylinder head is good to go ! Next post.. "bottom" end. Dave

[scottyb]

Cool

[groundpounder]

right