1981 xj650 not starting!

I have a 1981 xj650 which will not start! seems like not getting fuel into the engine, ive taken the carbs off and cleaned the bowls out, which had plenty of petrol in them, have put back together, it is turning just not firing

has anyone got any ideas?

thanks

 

sorry i forgot to add, there is a healthy spark on all 4

 

Have you just bought the bike, or owned it for awhile and it was just sitting around?

 

We all have plenty of ideas; and there's a good chance you've got more than one problem to solve. There're a wide range of possibilites based on a whole bunch of things we don't know yet.

In order to even begin to know where to start, we need some history on the bike, its mileage, your history with it, was it running, have you ever seen it run, etc.

Your location (put it in your profile while you're putting your bike info in your sig) would help too.

 

When you say you cleaned the bowls out,was there alot of gunk in them? If so your jets and other passages may be plugged up. A good carb cleaning will be in order i think...

 

Carb cleaning, float levels, valve clearances, does the motor even make compression in all 4 pots...

we have no data upon which to base advice.