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Louie, Technician
Category: Motorcycle
Satisfied Customers: 12439
Experience:  25+ yrs. experience
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Help me please, My monster 600 is playing up. It starts

Customer Question

Help me please, My monster 600 is playing up. It starts cold, but when it warms up. It looses power, splatter and goes off. It starts on choke but has no power. What should I do?
Submitted: 1 year ago.
Category: Motorcycle
Expert:  Louie replied 1 year ago.

Hi Herman and welcome to JustAnswer,

Thank you for the question and your patience. Should you still need assistance for information purposes only...

Initially, let's try the basics and determine general area of possible fault. Proposed preliminary tries (if have not been done):

  • • check the burn color of the old spark plug's inner ceramic tip;
  • - if black/sooty, then rich and/or vacuum leak issue @ the intake/after the carb;
  • - if oily, then an internal engine problem;
  • - if very light brown to whitish, then lean and/or an air leak concern @ air box/coupling/before the carb;
  • • clean the fuel path, drain the tank and replace with fresh fuel.
  • • check the air box and air filter/element;
  • - ensure tight/correct fit;
  • - verify air entry is only through the designated opening;
  • • check the battery voltage;
  • - at least 12.7V when idling;
  • - but not to exceed 14.5V ~ 15.0V when revving
  • - if overly high, try/run with the regulator temporarily disconnected.