| Author | Message | ||
     Kenny_j |
I'm hoping y'all can help me out. I'm from Houston, TX and bought a used 2002 Blast from my neighbor with 1500 miles on it for my son. We had issues with the bike starting/running and noticed the gas was bad we took the tank and carb off cleaned everything up (tore the carb apart and cleaned) and reassembled. The bike started and ran but since that time has been difficult to impossible to start but when it does it runs ok, most times the battery drains before it starts. We heard about the intake boot so we changed that but that didn't help. He's getting real discourged cause it wont start. Could it be the auto choke or enrichener? I havent checked the spark which I guess I should. Anybody got any ideas? It has the White Bros exhaust on it and I think stock jets, thats about all the mods I think it has. Any help would be greatly appreciated | ||
| Imadreadhead |
Maybe rejet it to 45/175 that would take care of a clogged jet..and check the intake boot again...a lot of people put them on wrong...make sure it is seated properly and dont overtighten it | ||
| Reuel |
More details! While trying to start, does it start up a few times and die? Does it fire sometimes until it finally runs? Does it backfire? When it finally starts, does it go to a fast idle and then slow down after a few minutes? Once it warms up, does it start fine immediately after shut off? Get a bottle of that carb/FI cleaner that you put in your gas and do just that. A bottle of HEET is good, too. Maybe you can do both at the same time. Get it started, ride it to the local gas station, put the stuff in, top off your gas tank, then ride it for a while. To test the autoenricher, pull it out, chuck it in the freezer for 30 minutes, then apply 12 volts to the wires. The plunger should slowly move out. If it does, squirt carb cleaner in the hole where you pulled it out before you put it back in. | ||
| Kenny_j |
More details; I took the carb completely apart and cleaned all the passages and jets. Changed the gas. When you try and start it it just turns over and doesn't even attempt to start. Sometimes when you give it a couple twists of the throttle it will fire but not start.If it does start and you touch the throttle at all it dies. I have several Harleys and am a proficient mechanic but he changed the intake boot, I guess I'll go back and check his boot installation. If / when the bike does start and you ride it around it will start relatively easy, if you leave it for a couple hours its back to not starting. As far as the fast idle it really doesn't go into a fast idle. I'll try the freezer thing and see. I guess what your saying is if the enrichener doesn't extend it's bad? | ||
| Reuel |
Yup. As it expands, it closes the enriched air/fuel circuit. If it does work, and you know that part of the carburetor is clean, check to see if the enricher is getting power when you turn it on and start. | ||
| Gearheaderiko |
Common problems on long sitting Blasts are the clogged slow jet and bad spark plug. Also common are defective safety switches such as the kickstand, clutch and neutral. This link:http://www.badweatherbikers.com/buell/messages/201 64/55319.html will show you how to flip the clutch diode which should bypass most safety switch problems. Pull off the timing/points cover. Black plastic cover is easily (and carefully) pried off with a small screwdriver. As you crank it over watch the LED on the module. It should light every compression stroke (not every stroke like a twin!). If the module is bad it will light the LED inconsistently, such as 2 faint flashes followed by a strong one (which is when the engine will fire). Unless its really cold, a good running Blast should still start even if the 'choke' is bad. It will suck to try and keep it running, but it should start (remember, a Blast doesnt have an accelerator pump, so twisting the throttle does nothing). Have you tried starting fluid? | ||
| Gearheaderiko |
PS Welcome Kenny J (and son)! | ||
| Kenny_j |
Update: last night we tried starting fluid and the bike started right up and ran but didn't go on the high idle circuit and ran real rough. When you gave it throttle it backfired thru the carb and in general didn't want to keep running and would die if you left the throttle off. Granted we didn't let it get completely warm either. Every shot of starting fluid and the bike would run. I looked at the boot and it looked to be installed correctly so we pulled the auto choke and put it in the freezer to see if it would pull in and it doesn't appear to have moved but then again I don't know how much it's supposed to pull in anybody have that answer?, could this be the issue? I didn't put power to it either and I've left it in the freezer and will try the power tonight. Thanks in advance for the continued help! | ||
| Ezblast |
Try bypassing the safety switches - betting clutch or kickstand is the culprit. EZ | ||
| Reuel |
It does not pull in. When you apply 12 volts to it, it should push out. The 12 volts is the test. The freezer is just in case it was already warm. |
