QuestionHi,
I have a 2000 Honda CBR 600 sport bike. I bought it used and it ran okay for a month or two. Then the bike started overheating when I drove it in town where it wasn't getting alot of air. It's air and liquid cooled. I found that the oil level was low and that seemed to help that issue after changing the oil. Anyways when riding the bike for some time to get the engine hot, it will not restart after I shut it off until I've let the engine cool back down. Then the bike will start right back up no problem. I suspect a wiring or relay problem but not sure. Just looking for some things to check before paying out the butt at a shop.
AnswerJason,
these things can be hard to diagnose.
First thing to check is the compression
to eliminate the possibility of
low compression when hot.
These bikes should have above 150 psi
cylinder pressure with a minimum of about 130 psi.
Any lower and running problems will occur.
Check the fuel tank air vent. If plugged
the fuel will cut off after running a bit.
You might notice pressure when you open
the gas cap.
Make sure battery cables are tight and clean.
Check the wires coming from the pulser coil/rotor
area, tighten the connectors, squeeze
the female connector slightly so the
wires make better contact.
When it won't start have you checked for
spark? If it looks ok, it might be a fuel problem.
Parts that can act up when hot include
the ignition pulse or trigger coils and
the ECU or ignition control unit.
Sometimes laying an ice pack on the
suspected faulty part might revive it.
Fuel problems can include the fuel petcock valve
on the tank or fuel filter plugged.
A plugged air filter might cause
a too rich mixture when the engine is hot.
Check for any corroded or loose connectors.
Check if spark plugs are rich (black) or
lean fuel (white-ish) Normal is light tan/brown.
