Reply To: Looses power and cuts out at high speed
GTRIf possible please, can you ride to any bike shop or car shop. Tell them exactly this (takes 10mins while you are stood there)
- Make sure engine is warm (if owner has arrived, you may test right away)
- Remove both front and rear spark plugs
- Get a compression tester Gauge and use a “STRAIGHT METAL PIPE” end (as flexi hose will be inaccurate, no buts)
- Hold the throttle on FULL OPEN position (FULL Throttle)
- Crank the bike for 5 seconds max.
- Record compression of the rear cylinder.
- Repeat for front cylinder head.
- Fit everything back & return customer bike
Come back to this forum and tell us how much compression bike has.
Keep in mind
this assumes the “Solenoid” is new and healthy or it will spin the starter motor slow, giving false readings
this assumes the “starter motor” is replaced , if it has issues of spinning slow all the time (it must crank fast)
this assumes the “battery is charged”
If in doubt, please ask bike shop or halfords for a free battery life test (not volts, but it’s cranking power) using their “YUASA LOAD GAUGE PROBE”
Keep us posted!
// Meditation doesn't mean you have to sit still....
