lopche Posted July 5, 2008 Report Share Posted July 5, 2008 Hi everyone, new to the forum, but I need serious help... I've just bought a Beta Techno (or Zero, not shure) and I just can't start it... It has a Mikuni Karb. and the situation is the following: I've checked the sparkplug and it's OK (maybe a little low spark, but a spark is there), it has more than enough fuel and what happens - I clean and put the sparkplug, try to start the bike, after a while it fires, works unsteady and literaly drowns the plug in gasoline, so I reclean the sparkplug, refire the bike and so on and so forth... Now I should probably mention, that my bike's missing a silenser and that also the electric regulator is missing and also I've found another electric part with three inputs, that sits under the fuelcap cover (between the frame/tank) that is also disconnected... No Idea what to do, Please Assist... Quote Link to comment Share on other sites More sharing options...
dan williams Posted July 6, 2008 Report Share Posted July 6, 2008 Honest reply? Find the local Beta dealer and pay him to have a look at it. Quote Link to comment Share on other sites More sharing options...
diligaf Posted July 6, 2008 Report Share Posted July 6, 2008 Take it back and get your money returned. My experience is that a bike sold in that kind of condition has more than one thing wrong with it. As you fix one thing the next thing becomes apparent and so on. The deal may have seemed sweet at the time but once you are finished sorting the bike it will have cost lots and still be a piece of cr@p that you can't sell. Take that sucker back. Quote Link to comment Share on other sites More sharing options...
lopche Posted July 6, 2008 Author Report Share Posted July 6, 2008 Thanks for the quick replies guys, but can we brainstorm a little before I chop the bike with an axe? (Taken Serious thoughts...) Quote Link to comment Share on other sites More sharing options...
madcr500 Posted July 6, 2008 Report Share Posted July 6, 2008 Sorry if i'm being obvious but have you tried a new sparkplug? Sometimes they give a spark out of the barrel but when you put them back in they fail. Quote Link to comment Share on other sites More sharing options...
lopche Posted July 6, 2008 Author Report Share Posted July 6, 2008 Well, actually I have, but the other one wasn't wright (it was shorter) so it may be from that too... Quote Link to comment Share on other sites More sharing options...
yamahaty250xox Posted July 6, 2008 Report Share Posted July 6, 2008 check the woodruff key. if it has sheared then the timing will have slipped causing the bike to spark but not in time to the cylnder. there only pence so its workth changing. max Quote Link to comment Share on other sites More sharing options...
lopche Posted July 6, 2008 Author Report Share Posted July 6, 2008 Thank you all, Just for info, I've changed the spark plug with a new Denso one (for the bike exactly) and cleaned the carb and all of a sudden it fired and with a little carb tweaking, now it works and holds low rpm, but doesn't work good on high, probably because of the mising silenser and air filter. Tomorrow I'm buying the silincer and air filter and we'll see what happens... Again, thank you all! PS. Here's a link to a BG forum with picks BMW forum BG Quote Link to comment Share on other sites More sharing options...
maude Posted July 6, 2008 Report Share Posted July 6, 2008 I'll second the stale fuel idea, especially if it's now starting but won't rev cleanly. I had a quad bike that sat for three months while waiting for gearbox parts and when rebuilt it started but wouldn't rev, checked loads of stuff then changed the fuel, problem fixed. It's gotta be worth trying. Quote Link to comment Share on other sites More sharing options...
roberto Posted July 10, 2008 Report Share Posted July 10, 2008 Hi, maybe this will help: 1. get a new correct plug 2. make sure the carb has the correct jets, and nothing is missing 3. take out the old plug, check the new one for spark and kick the engine over five or six times, then put the new plug in 4. put fresh gas with the right mixture 5. put the choke on, dont touch the accelerator and see if it starts 6. if it starts and can hold an idle let it warm up about 30 seconds before removing the choke 7. if it doesnt die, rev and see how it goes. If this doesnt wok and the cylinder and piston are sound, then the carb or the ignition are the problems. Quote Link to comment Share on other sites More sharing options...
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