Help please

[Ctessmer]

I started working on a friend's Blast and i now wish i had never messed with the pos. I have been working on bikes, rebuilding and sync-ing carbs, etc, etc, since i was old enough to hold a wrench and this thing makes me want to roll it into the lake. I have dipped and cleaned the carb, set the tps as per factory manual instructions, checked for intake leaks, etc. Someone has already installed the superboot. I can get it to fire and respond (sort of) to throttle but it quickly loses fuel. I have a remote gas tank hooked directly to the carb and the float is set correctly. While im revving it, gas vapors are spraying out of the rear of the carb. Once it begins to lose fuel, i can put my hand over the rear of the carb and it picks up fuel again but i end up with an excessive amount of fuel on my hand. This is the symptom it displayed which caused my friend to bring it to me. She said fuel poured out of the air cleaner. I'm stumped on this bike and for what the cause may be. It looks like it may have the wrong carb on it as their is an accelerator pump shaft sticking out of the side of the carb, horizontally, where the pump linkage would be on a harley, but the housing where the pump diapragm would be has no holes which would normally go into the carb body. Someone else (supposed to be a harley mechanic) had it apart and i received it in pieces. Im about to give it back like it is just to get it out of my garage. I have yet to check compression but it sounds decent. It seems to pull vacuum. Is the original emission return tube on the side of the carb supposed to be plugged if there is no charcoal canister on it anymore? It's capped off. Any insight would be much appreciated. My last question is: wth was Eric Buell thinking when he put his name on this junky little bike?

 

[Ctessmer]

I will check compression to see if it may be a valve leaking by, but i've checked the needle valve diapraghm for pinholes and found none. When i dismantled the carb to dip it, i verified jet sizes, so i know that's not the issue. I also removed the air fuel needle and then set it at 2 1/2 turns upon reassembly. Do these things not like to run without the air cleaner installed? Just trying to figure out what to do next on my next day off. Im sick of this bike and just want it to idle and be gone from my life forever so i can get back to working on actual motorcycles.

 

[stensg]

Sounds like your trying real hard top make friend here and get the help you need

 

[jetlee]

These things are crap and are terrible to work on.

That was sarcasm, obviously.


1. Get rid of the remote gas tank, use the one on the bike.
2. Spray starting fluid around the boot to diagnose a leak. All you're doing is playing guessing games and wasting time.
3. If it's "losing fuel", why are you fiddling with the boot? Sounds like a fuel supply issue; either tank, petcock or float.
4. What intake/exhaust are on it?
5. What jets are in it?

 

[Thaloc]

^ As abrasive as Jet can be, its only cause He loves and knows his blast like no other. I would become his best friend if I had a blast in need of help.

 

[jetlee]

^ repped