Author Topic: 1976 cb400f +3 questions = help  (Read 651 times)

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justwannaroll

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1976 cb400f +3 questions = help
« on: May 26, 2010, 12:10:04 PM »
so confussed right now heeeeelp  . 
new to this blog but me pal told me this is a good spot  soooooo thanks for listeninghere it goes .
start from the nearest beginning ,
bike stopped running. on the highway after we came to a light  . was running good . just stopped wouldn't kick through
then waited about 1 hour ... could kick it through started with a terrible sound
maybe from the front maybe from the bottom hard to tell .. slapping..grinding yuck ..sounded like a cam chain tensioner stopped doing its job or a drive chain fell off , i dont really know..

so truck it home.
Drained the oil in hopes of a surprise nothing .
flipped er upside down look inside the bottom all chains look good all stuff moving that i can see through the oil pan fine .
look in the top .. all looks good cam chain fine ... . did a valve ajusment ..theres great compression ...theres spark ... clutch is fine took it apart
okay kick er through feels good . ....
THEN as soon as i put OIL in i cant kick it . well i can but i got jump on it two feet.
SOMETHING IS WRONG .
all start with this question one . all save the other 2 questions .
sooo then we look into the oil pump maybe there is a blockage air seal , the oil pump looks fine  .
I dont know . anybody have this problem .
is it time to just pull the motor and start again ? i hope not .