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Post by weeman on Dec 11, 2018 11:57:12 GMT -5
My scooter turns over forever then it will start. After it’s warm it does the same thing turns over for extended period then starts. I’ve replaced the carb filter hose fuel pump cdi box regulator. I also did a valve adjustment. Only thing I haven’t checked is compression or leak down test. Please help.
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Post by tortoise2 on Dec 11, 2018 12:05:09 GMT -5
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Post by GrumpyUnk on Dec 11, 2018 13:49:55 GMT -5
You may need to adjust your carburetor. You can try cycling the throttle to full open a few times before trying to start. That should enrich tue fuel:air mixture that is being fed to the engine for a short bit. If your machine starts better/faster after doing that you may make the deduction that it wants a richer mixture.
Can't hurt to try.
tom
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Post by tocoo on Dec 12, 2018 1:36:45 GMT -5
On my scooter, I need 25% throttle to start, if 100% it does not start.
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ratdog
Scoot Enthusiast
Posts: 342
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Post by ratdog on Dec 12, 2018 10:04:15 GMT -5
First, I have to ask, did you “upgrade” CDI?
These little guys are designed to cold start with a closed throttle. A couple of quick twists of the throttle BEFORE cranking might help “ prime the pump”, but always crank with the throttle closed
I would suggest you pull the gas line off the carb, then crank the engine to see if you are getting a good flow of gas.
This sounds over simple, but these guys often sit for long times. Unless you got out of your way to get pure gas, most pump gas is E10 or even E15 some places. If you let these gases set, you get water in your fuel. I would drain all the gas out, including the carb, and put fresh gas in before going any further.
Have you changed your plug? You can get a replacement plug at the local auto parts store for like $3. I would just replace it!
You need gas, air, spark, and compression to run. I would pick up some starting fluid at the local auto parts store and see if it fires up on starting fluid.
the reason I asked about the CDI is that the “preformance “ CDIs mostly leave your timing fully advanced. That often makes for a very hard starting motor. If you put in an aftermarket CDI, I would replace it with a stock CDI. That will make the engine much easier the start.
Also, have you tried kick starting it? I have had bikes over here that were a bitch to start with the electric starter, but would kick start just fine. If that’s the case, even thought it turns the bike over, you might need a new battery. If you have a battery charger, you might try putting it on charge for about 10 min, then leave the charger on while you crank the bike. If it starts right up, you know at least one of your problems
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