wont start

[zxr400rider]

hi guys picked up my bike friday night, me and my mate are in the middle of checking it over, the battery flat but with my car battery the lights work but wont turn over on the starter button it will if you go stright to the starter, got no spark either any body got ideas????

[Chris1984]

Check the main fuse the one on the start relay

[zxr400rider]

done thats fine

[cargo]

is this the £330 non runner thats been laid up .........................

[zxr400rider]

yea now im wondering why it was laid up, got no spark either just checked, can get it to turn with power to the starter motor

[jackdim]

You try connecting the battery directly to the starter motor? For example:

Negative from batt earth on the motor somewhere, positive from batt directly onto the starter motor connector

You tried to turn the motor over by hand? For example:

Remove pulsar cover and turn over the crankshaft with a rachet and socket to check it hasn't locked up?

[zxr400rider]

ive had the engine turning over when connected direct to starter but no spark, it cant be seized as made a noise out the exhaust and could hear suction from carbs, how is the spark controlled on a bike? i know my way round a car but im new to bikes so its a learning process.

[cargo]

Even if it was in perfect running order when it was laid up it would still struggle to start.......................how long was it laid up ?

old petrol ?
corrosion in the electrics ?
side stand switch stuck
clutch cut out switch ?
bad earth ?
is everything thats supposeed to be there actually there........................ or is there something missing.
and everything plugged in and connections clean.
kill switch faulty ?
plugs fouled ?


does it even turn over ?
are you using a fully charged battery?
is petrol actually getting to the cylinders ?
is it in gear ?
is the neutral light switch connected
Check all the fuses




bla bla bla

you going have to start from scratch and check every single bit of it

[cargo]

Are you getting it to turn over by putting 12v directly onto the starter motor.......................................you'll not get any sparks and the fuel pump won't be running

You need to get the starter working as it should via the relay and solonoid..........................then you will have sparks and fuel

If the starter wont turn over properly then the problem then you need to find out why
side stand switch is a potential problem they stick

[jackdim]

Try and bypass the solenoid to see if it turns over

You getting voltage to the solenoid? Or just after the starter button when pressed?

[zxr400rider]

havent checked for voltage yet need to get hold of a meter, i got the battery on charge for tonight try again tomorrow

[zxr400rider]

UPDATE checked for voltage at solenoid i get 12volts across, starter turns when i bypass the solenoid so ive brought another one from ebay to try.

[jackdim]

You sure its not a problem involving the starter button (and related wiring and connectors) itself?

[zxr400rider]

i have since checked voltage to coils and only get 3v should it be 12v? i went and got a new battery today and only get 3v with that at the red and black wire and green and red wire, is this nowa loom fault or the cdi???

[extonyg]

is that 3v with the bike running?or just ignition on?there might not be 12v at the coils if its not running as there is no need for the coils to be powered up.i might be wrong though.has your starter solenoid turned up yet?