The bike was running then stopped, it will not start, no power to coil, when kill switch is open or closed makes no difference it still turns over but will not fire, electrician requires wiring diagram to source fault as unsure if their should be constant power to coil ? Bike is a Zhenhua Actionbike ZHST250-7

SOURCE: bike will not idle

Remove and clean the carb. Reassemble then adjust the pilot screw. This screw is on the bottom outside of the carb centered L & R and forward of the main jet. The screw is nearly recessed in the carb. Turn the screw out 1/2 turn to richen the mixture if the cleaning alone doesn't do the trick. Also, move the clip on the jet needle down one notch for better low speed response. Reset the idle speed as needed.

Please rate this answer. Thanks dtpenn!

SOURCE: Yr 2000 thundercat, won't idle unless choke fully on

First thing I would try is some sea foam, you can get it pretty much at any auto parts store...put it in the tank per instructions on the bottle, if the carbs are gummed/dirty... seafoam is you best hope at getting them clean without pulling them.

If sea foam doesnt work, you'll have to yank the carbs, but before you do... pull the tank, set it backwards where the seat was, get about a two foot fuel line (air line works just fine) run it ti the tank and start the bike, take a can of starting fluid (WD 40 works too but stinks when it starts to burn off afterwards) and spray around the base of the outside of the carbs where the boots connect it to the intake, if the engibe revs, you have a leak...cracked boot probably.

If no leaks are detected... then yank the carbs, pull the bowl covers and start cleaning....also, while you have them off pull the slide covers off and check the diaphrams on the needle for rips or cracks as well.

Check/clean.. put everything back together... if it still isnt running right then I have no other suggestions... certainly sounds like an air/fuel problem... if were anything else choking it wouldn't make it better.

SOURCE: bike backfires constantly on decelleration

i would recommend you to get the cylinder pressure checked.

SOURCE: bike will not turn over lights work fine kick

Check the kick stand switch first. They are always in a location that is ideal for collecting dirt etc. Put the stand down and press the switch a few times by hand and then try starting again. Maybe even a bit of WD40 on it if it's anything like mine after being riden through the winter.
If this doesn't work, the kill switch is then worth investigating.

SOURCE: 1982 Suzuki GS850 GL will only run with the starter button held

Obviously the CDI is picking up power from the starter button. Check the ignition key switch for proper operation. Chances are that whatever fried the loom also fried part of the switch. Alternate to that, trace the wire powering the CDI system, disconnect it at the source (starter button connection), then find a power source that is live only when the key is turned on and then hook the CDI wire up there.

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