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Louie, Technician
Category: Motorcycle
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Experience:  25+ yrs. experience
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2001r-1 yamaha wont start after fans cut on when I shut off

Customer Question

2001r-1 yamaha wont start after fans cut on when I shut off bike
Submitted: 2 years ago.
Category: Motorcycle
Expert:  Louie replied 2 years ago.
Hi and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially (and if have not been tried), the prescribed preliminary approach would be; inspect the battery & ground lines and/or check/clean the battery cables + terminals as a preliminary consideration. Better yet, have the battery externally charged and then load tested (even if new and just for purposes of eliminating it as a suspect). Additionally, check the starter relay. To locate the starter relay, start by following the big cable from the + terminal of the battery as it always ends up tied to 1 of the 2 big terminals of the starter relay. Carefully but quickly/momentarily jump the two (2) big terminals. This is a bypass of the starter relay to enable the starter motor to spin:• if no starter action, then starter motor issue;• if starter would clack loudly, then an internal issue;• if slow starter action, then battery/voltage/connection concern;• if would start as expected, then a likely possible starter relay and/or its wiring fault. Further, attempt to start again with throttle partially open. Then check (if have not been done): • carefully remove the sparkplug; • check the burn color of the ceramic at the tip end; • results would indicate: - if black/sooty, then rich and/or vacuum leak issue; - if oily, then an internal engine problem; - if light brown to whitish, then lean and/or an air leak concern; • check if the tip is wet with fuel; and then • cautiously perform a spark test; • results would indicate: - if not wet or very wet, then fuel delivery issue; - if no/weak spark then electrical/ignition concern. Please post back results / observations of the above once tried.

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