Question about 1985 Honda CBX 750 F
Posted by Anonymous on
Hi, Anonymous and the usual suspects are:
1. Engine oil system overfilled.
2. Piston rings worn past service specs.
3. Broken piston rings.
4. Piston pin retaining clip failure.
5. Cracked piston.
6. Broken piston ring lands.
7. Hole in the piston.
8. Valve/guide clearance worn past service specs.
9. Worn out valve seals.
10. Crushed or loose valve seal.
11. Gouges in cylinder walls.
12. Cracked cylinder or head.
13. Blown head gasket.
14. Crankcase breather blocked or hose pinched.
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Honda CBX 750 HEELP
How to identify and repair leaks on your motorcycle
Honda 1985 CBX750F Workshop Manual
Honda CBX750P Owner Manual
Posted on Aug 08, 2017
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Posted on Jan 02, 2017
SOURCE: CBX Restoration
I have 4 CBX's '79-2, '81 Turbo, & '82. If you are using stock forks and not a real agressive rider, the ATF fluid works just fine. If you are using performance forks, have other internal modifications, or prefer the twisties, you can experiment with different weight oils. I believe that ATF is about 10W ...
Posted on Nov 10, 2008
SOURCE: 750 Honda oil leak
Blow-by on the piston rings builds pressure in the crankcase. There is a case vent and it may be partially plugged or the vent hose pinched. The pressure has gotta go somewhere and the sprocket shaft seal is the choice.
Oil goes out with the pressure. More revs = more oil on the garage floor. Check and clear the gearbox vent and stick in a new sprocket shaft seal.
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Posted on Apr 07, 2009
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