| Author | Message | ||
     Cepblast |
Hello everyone I'm new to the site but was told this was the best place to find out about my new buell. I purchased a 2002 blast with 151 miles on it here in florida. the guy bought it for his son and then never rode it. his loss is my gain I suppose. well he took pretty good care of it kept it in the garage and started it up every week and drove it around his neighborhood. the bike is ok physically just some scuffing where his son ran into his truck but its got some gremlins mechanically. the only real issue is the cold start. when I got the bike the first thing I did was drain the terrible gas he'd had in it. it looked like he was still on the original gas he'd bought when he got the bike. and then I changed the plug because it showed signs of fouling. I bought a K&N air filter to put in it because the original smells like gas and was wet most likely from the truck ride home but I have't put the K&N in the bike yet. the bike doesn't want to idle on a cold start. I follow the check list for turning on the fuel supply and everything but when I push the starter button I get one puff and then it just keeps turning over. if you give it a crank on the throttle it'll start up but won't idle unless you give it just a hair of a twist on the throttle to keep gas going to it. but once its warmed up it runs like a top no backfiring nothing it idles like a dream. I'm mechanically lost on bikes this is my first one but I'm familiar with cars and my fathers a mechanic. the previous owner says he had the carb cleaned and had the oil changed and brakes bled. its pretty obvious he had the oil changed as it is too full so I'm going on his word that the other services were done. any help is greatly appreciated. | ||
| Britchri10 |
Welcome. It could just need the idle adjusted on the carb' or it could just need the new K&N Filter installed, or it could just need to be ridden for an extended time. Is FB (your location) Fernandina Beach? Chris C | ||
| Ezblast |
Replace boot, replace primary jet with a 45, and main with a 170 - that should do it - the new gas with booze in it is making it hard to start. It could be just as you stated, however, the stuff above will need to be done anyway, and there is a very good possibility that it will cure your problem. EZ | ||
| Gearheaderiko |
Welcome! Concur with both!!! ....and seriously, please dont take the carb off again to clean it. These carbs rarely need "a good cleaning" unless you live in the dust bowl and even then.....Just replace the jets-actually just the slow jet (#45). The main is probably a 170 already. A #45 slow jet is stock on many "Big Twin" Harley Davidsons (they use essentially the same carb with very minor differences). Dont tell them its for a Blast, they'll panic and tell you they dont have parts for it and will run off into the back room until you leave! | ||
| Cepblast |
Britchri10 yes I do live in FB. I never took the carb off to do any work to it I was just going with the previous owners word on it. I put in the new filter but still had the issues my dad and I both thought the same thing, its probably gummed up the idle jet because it had such terrible gas in it before. I put a fresh tank of premium in it and plan on running a few through it to see if that could work it out before I go into the carb replacing jets. you guys don't think it'll run too lean without changing out the idle jet do you? I gotta finish the MSF course for florida before I can really take it out and run it all I've been able to do is get around a few neighborhoods near me I thought of the boot but then put it out of my mind because the bike had so few miles on it. one last thing should I change the fuel filter in the bike too? thanks for all the help getting my little blast going the way it should guys this forum is a life saver | ||
| Gearheaderiko |
There isnt a fuel filter only a 'screen' on the petcock in the tank. There isnt any reason to bother with it unless you have a problem with it (which is rare). Change the slow (idle) jet to the #45. The Blast will run much better with it, start much easier with it and a clogged slow jet doesnt usually unclog itself very easily. | ||
| Cepblast |
alright I'll make sure thats the first thing I do then. thanks eriko. | ||
| Ezblast |
I would do the rest I recommended as well, especially since that rubber will be old. EZ | ||
| Cepblast |
I'm ordering a superboot next week to put on it | ||
| Britchri10 |
I PM'd you Chris C | ||
| Cepblast |
update on the bike, the bike is still having a cold start issue. I got the new boot put on as the other was cracked on the inside. didn't see anything on the outside but still needed to be done. I pulled the carb and checked out the jets, the 170 was clean and clear but I think the Idle jet is clogged up and thats whats causing my issue. I'm just gonna spend the 4 dollars on a new jet from my dealer but I wanted to know if I had to do any other work on the carb if I swapped up to the 45 instead of the 42? I've looked around and it seems like you have to adjust the mixture screw and shim the float needle from what I gather and this is more work than I want to get into, I'm keeping the bike stock completely aside from the K&N filter it already got which is just the drop in and as far as I can tell it doesn't really give that much more flow than the stock filter anyway. so am I over complicating this? is it really just take out the 42 screw in the 45 and bolt it back on? if so I'm totally in for it otherwise I'd rather just keep it stock. one of the reasons I believe its the idle jet aside from the starting issue is that when you roll off the throttle and allow for engine braking it starts burbling and poping like a backfire, the carb will also "cough" on startup when I'm light on the throttle trying to warm it up. which is the only way to keep it running till its warmed up a little. any advise is welcome guys. | ||
| Cepblast |
I failed to mention above that the bike now has 350 miles on it and has ran fine once you get her going in the morning. | ||
| Dakatak87 |
the blast also has an Auto Enrichener(Auto choke). I know that mine is bad so it takes a long time for the bike to run warm in colder temperatures. The Auto Enrichener runs off both Electrical heat and Engine/Ambient heat. If the electrical heater element is bad or you have a open circuit, the Auto enrichener will take forever to close, and the bike will run cold. My current solution is replacing the Auto Enrichener with a Manual Choke by swapping carbs from a different bike. Although there have been others that have modified the Auto Enrichener into a Manual Choke. Manual choke and Auto Enrichener are different mounting set ups, so therefor not interchangeable without modification. | ||
| Fathermike |
Dakatak87, did you already do this change over of the carburetor? If so, any problems? I'm looking into this as well. | ||
| Dakatak87 |
I am in the middle of it. I bought an older model CV carb off Ebay that came with a manual choke stock. However, the carb also came with an Accelerator Pump which are too much for the single cylinder blast. You can disconnect the pump. I am working on an adjustable accelerator pump so that it will work on my bike. You will also need to check the Jets or just swap them from the stock carb. I Have not started the bike since it is apart for Shifting/Transmission issues. OH, I just realized you might be able to use the float bowl off the stock carb to remove the accelerator pump assembly. That should make a swap really simple. I am putting the choke Lever/button hidden under the gas tank cover in front of the seat on the right. This is all i have for now, let me know how it works for you | ||
| Cepblast |
thats my next step if changing my slow jet doesn't work. I'll probably just replace the factory enricher if mines messed up though I'm trying to keep it as stock as possible for resale values or trade-in. I hate the stupid auto choke its the worst invention ever, takes twice as long as a normal choke to do its job and causes too many issues. Dakatak87 does yours start up without having to work the throttle any? My biggest peave is having to baby it for a couple minutes to make sure it doesn't die when you first start it up. also I don't think the enrichner would cause the backfiring when you roll off the throttle. | ||
| Cepblast |
alright guys new update, new slow jets in the carb and it seems to have fixed most of the issues. after I put the carb back on and test drove it the idle was really high. I drove it back home and adjusted the control screw and checked the boot and it seems to be doing fine now. I let it cool off and tried to start it, it turned right over and started idling just fine but now the carb will cough every now and then either when warming up or just sitting at a stop light, should I drill out the cap for the mixture screw and adjust it or just leave it as is and just drive? | ||
| Ezblast |
You could do either - if you do drill out plug - for stock 2 to 2 1/2 turns out from bottom should be all that is required. EZ |
