damn thing wont start

[craigbcf]

hey my friend has a off road bike with what looks like a c90 engine in it. the bike doesnt seem to be start at al now any ideas what cood b up with it

[Jamie.]

Changed sparkplug? Gonna need a bit more details than what you posted

[bidman]

Check the spark plug, report back with what colour it is and if its still firing. There could be hundreds of reasons as to why its not working, Dan
____________________
Don't ride it, RAG IT!!

[Davo]

Can you provide any more information?

i.e. Does it turn over?

An engine needs four things to start

1) Fuel
2) Air
3) Compression
4) Correctly timed spark

Things to check firstly

1) Is fuel in the tank? also is it getting through to the carbs?
2) Take the plug out check it's condition, ground it against the cylinder block, does it give a healthy spark?
3) Is there any compression? (test this by removing spark plug, put thumb over hole and turn the engine over, if this blows your thumb off the hole, compression should be ok)

HTH

Davo

[critical_technique]

charge the battery

[craigbcf]

i have changed the plug and checked the fuel, cleaned the carb but it still dosent seem ti be firing if u ask me its a piece of s*** and he shood burn it but we will keep trying cheers for the help