I have a 93 600 F2 and it runs great never had a problem starting until now. When we tried to start it, it would back fire and sound like a shotgun had went off. It has been serviced recently and has brand new spark plugs. I need help asap, thanks.

 

How was your timing before? Was there any CCT noise? It definitely sounds like a timing issue of some sorts...
Good Luck.
RB

 

I just got the bike, but the po never mentioned anything about him having to adjust the timing or any problems relating to the timing. And whats a cct??

 

Yes I did run the battery down while trying to start. I hooked it up to an 2amp charger. There is plenty of gas. No I dont hear any unusual noises. The gas came out of a gas can that had been sitting for a month or so, could the fuel have dirt or something in it? If so do I need to flush out the tank and spray the carbs with cleaner, to avoid having to take the bike to a shop.

 

How do you know if the plug is fouled?

 

Can they be cleaned and put back in? Instead of buying new ones? The reason I asked is that im on a fixed budget and cant afford to put alot of money into the bike right now. I know where the carbs are is there like a screw underneath the housing or what to drain?

 

make sure that the spark plug wires are routed to the correct spark plugs just sounds like the firing order is off

 

the bike will still start even if the wires are routed wrong. but thats where you get the shot gun sound.... from old sparky firing off at the wrong time. as long as there is air/fuel in the cyclinder sparky will ignite it. but igniting at the wrong time leads to detonation pre ignition and back firing. in this case back firing. just track them down and double check. at the very least you can scratch it off the check list of things to look out for

 

would the owner's manual have a firing order?

 

good question i know the service manual does