| Author | Message | ||
     Kenner |
ok. so heres the thing, i bought my 2000 blast last year, used it the entire summer until pretty much the end of September.. i then suddenly noticed that there was a drip leaking from the bottom..not a lot of oil, just a bit..not much to really pay attention to...then while riding one september day she died on the road...i took a look and i was dry. so i grabbed some oil, refilled her and she was running again! so i checked here actually and found that oil seeping was a common problem for my years bike so i was going to bring her over to my bike class and get her fixed. i figured the best way i could do it was to fill the oil again then go over to the class and boom, fixed. so i did that. i refilled her...and she turned on...for a little bit..she sounded weak...then i pulled the throttle and she died. thats when things got worse because now she won't run at all. I emptied her oil and re filled her, but still nada. she has gas but won't turn over. I'd love to keep her, she's awesome, simple different...me.. i also haven't had a chance to fix 'er but i want to.. i know getting the more information out there would help and i will once i can get a chance to, but for now this is what i have..hopefully someone can help! Help me Obi Wan Kenobi, you're my only hope (Message edited by kenner on February 09, 2012) | ||
| Milt |
Do you have spark? Do you have compression? Is fuel getting to the cylinders? | ||
| Kenner |
how can i tell any of those? | ||
| On_blast |
Mine does this often. I usually pull off the plug wire and close it a little. If that doesn't do it, then I change the plug and it runs fine. I guess with all the vibration, sometimes the plug wire loosens at the plug end. Hope this helps... | ||
| Milt |
I apologize for the ads in the following videos. That's what free costs. Spark: http://www.metacafe.com/watch/2747086/check_for_sp ark_in_motorcycle_engine/ Compression: http://bikearama.com/how-to/engine-compression-tes t/ A very rough measurement can be made like this. Remove the spark plug. Put the bike into 5th gear. Put your thumb over the spark plug hole and slowly roll the bike. You should feel it being sucked in or blown away from the hole. Is this measurement good enough? Probably not, but hey, without tools, what can ya do? If you have both of the above, it must be fuel. Clogged fuel line? Check fuel filter, etc. Note that the flip side of compression is sucking, which is how the engine sucks fuel through the carburetor into the cylinder. Check das Boot !! My boot completely separated from the engine once. I had spark and compression sure enough, but that kept the motor from getting fuel. | ||
| Milt |
Also Kenner, welcome to the madness ! The most valuable accessory for a Blast is the shop manual. For about $50, you'll know everything that 50 years of Sportster mechanics have discovered about this engine. Additionally, you'll be able to fix anything else that breaks. The second most valuable accessory is a Parts Manual. With one of these, you'll be able to order precisely what you want - not the little screw doohickey that's next to the whatchamacallit on the left of the thingy. | ||
| Gearheaderiko |
Thanks Milt! Welcome Kenner! My first question is: How much oil drained out? How much oil did you put in? Having a feeling you dont know the basics and dont have a repair manual, further instructions on diagnostics might not be fruitful. First check the spark (as said). You dont even have to remove the spark plug as long as you have another good spark plug around (from just about anything). Fwiw, I wouldnt worry to much about checking compression yet. If it vibrates while cranking over, then you probably have compression. If it just whirrs over (like there's no resistance) then you dont. It can have decent compression (for a lawn mower), but still not start because of it. Keep us posted. |
