Question about 2004 Honda VFR 800

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Exhaust port clean

Honda VFR 800 1998 fitting a new exhaust system and noticed that number 3 exhaust port is very clean but the other 3 cylinders had some carbon build up is this normal or what could it be at fault?

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Check your valve clearances as soon as you can to eliminate problem from those.

Posted on May 28, 2009

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The hottest part of the cylinder is around the exhaust port, so if it has partly seized you will see some damage/ piston scuffing by removing the muffler and taking a look through the open exhaust port, any sign of damage and you need to decide if its worth taking apart and fitting new parts, you may get away with cleaning any alluminium stuck the the cylinder wall and fitting a new piston, if there is no sign of damage you may have been lucky.

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Ive got a 1998 Honda vfr 800. In 6th gear there seems to be a hissing noiose coming from the motor. Its only under acceleration and doesnt happen in any other gear. Its not the typical V4 sound - like a...


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Hi, Anonymous and the usual suspects are:
1. Engine oil over filled.
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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2003 cr250r exhaust leak at exhaust port
Need help trying to reduce excess spoge 2002 CR250R
CR250 2002 2003 pdf
http://www.partsfish.com/page/oem-parts-for-honda
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