Well I got the 89 600 f1 running today.
My problem now is that the 4th exhaust doesn't get hot. I checked the spark plug and it has a nice strong blue spark.
Any suggestions???

 

I guess it is the third and fourth exhausts not getting hot.

 

Check your compression!
What is 4 vs the others?

 

Could be 3 and 4 wires are reversed.
Switch them, start it, and see if 3 and 4 pipes get warm.

 

reversing the wires didn't change anything. I should check the compression though. Hopefully they're all good.

 

Are those particular cylinders getting spark? Did you check the plugs?

 

Just read you checked the spark plug, so it is sparking... if it' sparking then it's gotta be fuel delivery.

 

Do the cylinders fire correctly when you bring the rpm's higher for a period of time? I had the same problem when I got my hurricane put back together and it ended up curing itself when I got the main jets to kick in..

 

So if it is a fuel problem then it has to be that my carbs aren't clean or something wrong with the jets?

Could it be a compression problem? I was going to go buy a compression gauge but if that can't be the case then I won't.

 

I would try cleaning the carbs and jets really good, It is fairly simple to do..