Hi- I have a 2003 Derbi Red Bullet. It sat for a while (years) in my uncles garage (with gas in it). I drained the gas, replaced the spark plug and battery and got it to run for a few days. Weeks later, I tried to start it and it won't start. It tries to trun over but it will not "catch". Thoughts? Also- right over the spark plug there appears to be a disconnected house, is it supposed to be that way? Thanks!
SOURCE: 2003 883 sportster wont start
What u are describing is typical of a faulty ignition system, but could also be a fuel problem. I check by removing the aircleaner and rotating the throttle. If u see a nice spray of fuel, thats probably not the problem. Check for a spark at the plugs. I can explain how if you need me to. If you cant see a good spark, U have an electrical problem. I had a crank position sensor go bad on me. Dont do what I did (replaced the battery, ignition, and regulator as part of my diagnosis procedure)
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JUNK IT ITS A PIECE OF ****
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It might have tipped over on its side. Look at the air filter, if you see oil or gas on the filter then you might have to remove and clean the carburetor. I would start by cleaning/replacing the air filter and trying it again. If its getting fuel and the spark plug works then the only other side of the fire triangle is air.
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hi there mwb15
have you made sure the ignition coil is producing enough voltage to fire under compression load ?
you may get a spark at the plug unloaded but under load it may be breaking down / weak making you think its got a fuel problem ?
does your system use a cdi coil system or point/condenser system ?
spark usually falls into weak spark, no spark catergory
if compression , fuel ( you replaced carb) and exhaust are ok , and you have air and vaccuum tight c/cases only things left are timming and spark
remember F A C T S
F = Fuel A = Air & ( air tight c/cases ) C = Compression T = Timming S = Spark
compression should be about 130- 140 approx if in good running order
take a look and let me know
cheers pauly46
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