Question about Yamaha Motorcycles
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Posted on Jan 02, 2017
Hi 240 SX Girl-
We'll start with the basics, okay? An engine requires three things in order to start and run:
The most likely culprit is a fuel delivery problem, usually a bad fuel pump, or a fault in the fuel pump control circuitry. Check the fuel pump fuse, locate the fuel pump relay and swap it with one of the other relays that is of the same type (like a fan relay). If this does not get you anywhere, disconnect the air ducting to the throttle body (where the throttle cable from the accelerator pedal connects) and squirt some starter fluid directly into the throttle body throat while a helper tries to crank the engine... If it tries to start and run, you now know it is definitely a fuel delivery problem, and you can narrow it down from there, but at this point I would say it is a bad fuel pump.
If it STILL does not try to start, you might not be getting ignition to the spark plugs. You can check this by removing one of the plug wires, inserting an insulated screwdriver into the plug connector, and holding the metal shaft of the driver very close to engine metal (ground), while someone turns the engine over. There should be a spark from the screwdriver shaft to the engine if ignition is present. BUT BE CAREFUL!!! THE SPARK PULSE IS VERY HIGH VOLTAGE AND COULD GIVE YOU A GOOD JOLT IF YOU TOUCH THE METAL SHAFT WHILE DOING THIS!!!
If there is no spark present, it could be any number of things in the ignition system causing this, and post a comment stating you need further help and I'll walk you through ignition diagnosis.
But try the above first --- I'm pretty sure this will get you going again, and if it does, please remember to rate my advice --- your approval is my ONLY compensation for providing this advice!
Posted on Jul 14, 2008
SOURCE: 1999 Continental will not start
Does anti-theft light come on for a sec then turn off when you turn on the key or does it flash with key on?
You said that CEL turns off while cranking,does it come back on if you continue to crank after about 8-10 seconds of cranking?
If it does not then your PCM is not seeing a signal from the crankshaft postion sensor.You can try wiggling the harness at the crankshaft postion sensor and see if it will start.
Posted on Jan 31, 2009
Probably the rpm sensor located in the side of engine block under motor mount in front of the starter where it reads the teeth on the flywheel..will cause the engine to turn over and not start or start and shut right off about $124.00 at dealer..
Posted on Mar 09, 2009
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