Question about Sym Motorcycles
The first time it broke dwn i check the plug then it started again then today thought it ws fine then broke dwn on way to work its turnig over but not firing up 62 plate bike
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Posted on Jan 02, 2017
SOURCE: aprilia rs 125 starting problem
First check the battery to see its still fully charged. If it is do a voltage drop test between the battery and the starter to check for a bad relay or open circuit. If that checks out, you very likely have a bad starter/solenoid. I can explain how to do these tests if u need me to
Posted on Nov 26, 2008
SOURCE: yamaha yz125 wont start...
hello there guys, listen a top tip is when the engine's cold tip the bike almost right on its side nearly touching the floof, wait for the petrol to poor out of the carb over flow pipe, this should take a matter of a few seconds, stand the bike back up again and kick and that baby should start right up, if it does then you have a problem with your float, if it still doesn,t then take it to a shop and get them to check it out, hope this helps. regards sam
Posted on Jan 24, 2009
Make sure your fuel tank vent is not plugged. To see if this is the problem, the next time the bike starts acting up, stop and open the fuel tank. If you hear a whoosh of air being sucked in you know your vent is plugged.
The C8HA is still available, it is NGK stock number 2168.
Posted on Feb 20, 2009
SOURCE: cbr 125 choke problem
It sounds like the choke line may not have been routed correctly when the new one was installed. Remove the gas tank and check to see that the line is not being stretched anywhere along the way AND that the gas tank when re-installed is not stretching the line. The line may have been kinked when installed. Look at the mechanical movement of the choke at the carb. Does it operate freely? Remove the air filter and look inside the center of the carb, (you may need to use a small mirror for this), does it look like the choke is opening and closing properly when the choke is moved on and off?
Posted on Mar 14, 2009
SOURCE: timeing a yamaha 175 enduro
Without the year of the bike I am hampered. Lets assume it is an older bike and has a set of ignition points and not a CDI model.
Pull the cover off the shifter side of the engine. Remove the spark plug then turn the flywheel so you can see the points. Oil on them? Dirt, or rust? Next check the main bearing. Do not rotate the flywheel but instead hold the flywheel firmly and lift it up and down, left and right. Was there any movement or was the flywheel rock solid?
I am willing to bet that the points were dirty and there was a lot of play in the crank bearings. If so, you will need new crank bearings and seals plus new points and condenser. The engine needs to tear down into about 75 parts in order to replace the bearings. The job requires some special tools to remove the flywheel and clutch, plus a crankcase separator the split the gearbox.
This is not a job for the beginner. I suggest you have the shop do the work and also that you spring for 3 more bearings and seals plus a fresh cylinder bore, new piston and rings and a new spark plug. You now have a brand new engine that should run well and last for many years. Please rate this solution. Thanks
Posted on Mar 18, 2009
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