Question about Yamaha YZF-R1 Motorcycles
Yamaha r1 engine light comes on and says hot but then goes back to normal within seconds
Posted by Anonymous on
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Normal R1 operating temps
OEM parts for Yamaha
Posted on Aug 19, 2016
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Posted on Jan 02, 2017
SOURCE: 2005 model yamaha r1 motorcycle
It sounds like you have a poor ground connection. You'll have to disassemble and check the wiring harness for broken wires, start up near the ignition switch or around anything that is no longer stock on the bike (like aftermarket turn signals, fuel nanny, power commander, etc.)
Posted on Dec 29, 2008
if it's yellow you have a fuel problem, dirty air cleaner or something blocking air flow air flow meter giving you some problesms, best to get it to a shop and hooked up to a diagnostic system. If it's red quit running it and take it in for repairs.
Posted on Jul 25, 2009
Typically Yamaha used the firing cycles off one coil for input to the tach. The noise you hear may be misfiring on one or more cylinders. When tach drops to zero cylinder coil isn't firng, when it jumps up its firing again.
The erratic tach usually means an igniter (ignition black box) problem.
Get a manual and start with testing the pickup coils, they signal the igniter when to fire the ignition coils.
Then test the ignition coils for primary and secondary resistance, check igniter connectors for clean tight connections, full battery voltage supply to igniter etc..
Occasionally getting the igniter wet can cause erratic behavior till it dries out.
Posted on Mar 06, 2011
I would definately look at the spark plugs. It sounds like they are gas fouled. If they aren't entirely black that doesen't mean that they are okay. This system requires a very "clean" spark plug. Even a little yellowing way down around the base of the electrode insulator can cause a poor spark. A cheap way out is to change them and take it from there.
Posted on Mar 30, 2012
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