Hi gigerous. That's exactly how I started. Now I've got 8 sleds in various genres.
On the 340 it sounds to me like either a fuel starving or excess condition. Pull the plugs and see if they are wet or dry (before you prime or after it fires) While you have both plugs out beg/borrow or steal (don't steal it's bad!) a compression tester and give it a few pulls to find out if the sled still has enough and equal compression. (Roughly 125psi or better in each with about no more than 15 psi difference). When you prime and start it, do you give it a little gas or a lot to keep it going or do you start it at idle.
In either case, unless it is bad compression, my best guess is excess fuel and you have to use full throttle to start it.
Do you know if that sled has the tillotson or mikuni carb?
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I think.... therefore I sled
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Two '94 Indy XLT SKS
On the 340 it sounds to me like either a fuel starving or excess condition. Pull the plugs and see if they are wet or dry (before you prime or after it fires) While you have both plugs out beg/borrow or steal (don't steal it's bad!) a compression tester and give it a few pulls to find out if the sled still has enough and equal compression. (Roughly 125psi or better in each with about no more than 15 psi difference). When you prime and start it, do you give it a little gas or a lot to keep it going or do you start it at idle.
In either case, unless it is bad compression, my best guess is excess fuel and you have to use full throttle to start it.
Do you know if that sled has the tillotson or mikuni carb?
-----------------------------
I think.... therefore I sled
-----------------------------
Two '94 Indy XLT SKS