A couple months ago I purchased an 87 Savage. It was running rough and i got the carburator cleaned out real well and replaced both rubber diaphrams in it.

I have done other work to it reguarding starter gear breaking out and oil leaks. I had it running well until it started leaking oil from the middle of the crankcase. I ended up getting pissed off and purchasing a motor from a 98 Savage off Ebay and dropping it in last week.

After putting it all together it started right up without any problems. Sits there and idles well. The first time I tried to take it out and hit the throttle starting at about 1/4 (maybe slightly less) and up the bike starts choking (from what I can tell). The work I did before, I pulled out 1 of 2 white spacers that were in there and just this morning put it back in thinking it was getting too much fuel. I just fired it up and it is doing the same thing.

When it starts doing this I can see a blue flames shooting out the muffler in broad daylight. I know I am running a 155 main jet but not for sure on the others off the top of my head. This carburator was running fine with the other motor.

Any input would be helpful as I am not for sure if it is "choking" or "starving" for fuel.

Thanks

 0.065 ?

I removed the petcock a few weeks ago just to check and make sure it was clean. It also runs like this with the petcock in the "pri" positon so I would think that would remove a vacuum problem as a possibility. I can see a steady stream of fuel through the clear lines and filter installed. No smoke coming out of the exhaust just a noticable flame here and there.

The spacers are pretty thin. Thinner then pictures I have seen of ones on here. Looks like it is getting close to the thinkness of the ones I have seen in pictures with both of them in there, though. I will check the thickness of these the next time I tear the carb apart, probably tomorrow. I am sure it has been "tuned" before.

This afternoon after posting the original message I played with the idle mix screw (not control screw) and turned all the way to the close position and the bike still runs. I can tell it is about to die but still runs. I have been into the carb more times than I can count now and just cleaned it all out once again last night. The only other thing to do would be to soak it as its as clean it is ever going to get with the spray can method.

Like I said it ran ok (other than leaking oil) with the old engine that had 23,000 miles on it. The new engine has 3,600 and is much much cleaner inside. Could this casue the tuning in the carb to be way off?

Just seems to me like it is a too much fuel problem, but dont have a baseline to go from and I am not a mechanic. What I know I have learned by working on this motorcycle really. I did swap the engine myself so I am not too stupid.  

Thnak for the reply

No sir.... never thought of spark plug wire. I can add that to the list of stuff to order I suppose.

Might be something else but sounds like the carb, since this is an '87 carb does it  have the three groves on the needle at the c-clip?

well it sounds to me like it's going very rich as soon as the slide lifts the needle hardly at all - have you had the main jet out and are you sure the washer is under it - this holds the needle jet tube in place

Going to prime will prove your getting gas, but your vacuum line could still be drawing extra gas.  Try plugging both ends of the vacuum line and running on prime.  This will tell you if the line has been letting gas sneek past.

Well, I have completely screwed up the air/fuel mix screw. Pretty much stuck and stripped.  

This motorcycle is turning into an expensive mechanics lesson. Trying to find another but might have to buy a brand new carb if I cannot find something soon.

Will keep you posted.