Am I flooding the engine? By scooterdocfan8817 (Read 5,103 times)

[scooterdocfan8817]

I have a 2008 Jonway YY250T. Works great but for just one issue. It starts wonderfully after parked(engine off) overnight or while I am at work. Once I ride the scooter and turn off engine to run an errand and try to restart after say 10 minutes, it will not restart unless I let it sit for about another 15 minutes all the while draining my battery I'm sure. I up'd the idle to 2300 so not to stall at stop lights until she's warmed up. Am I allowing too much gas into the engine while riding and flooding the engine enough to not restart immediately after engine shutoff? I am sure a valve adjustment would help as well. Just wondering if my idle is too high. Please help. Any and all suggestions would be greatly appreciated. Thank you.

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[Alleyoop]

Your Idle on the stand should just be so that your rear wheel barely wants to turn. If it is on the stand and your rear wheel is spining then yes your idle is to high. As for the dieing when its hot and coming to a stop I would say your valves are to tight. That is why you are compensating with setting the idle up high so it will not die when you stop. That is why you have to wait till it cools down. I think that is all that is wrong with it.
Alleyoop

[scooterdocfan8817]

Thank you Alleyoop. ;D

[scooterdocfan8817]

Thank you for your response. 1800 sounds good. Takes only about a mile for the scooter to warm up and idle on her own. My only real issue is that when I turn off the scooter and try to restart a few minutes later, it just acts like its flooded and will start again only after waiting 15 minutes or so. The scooter starts perfectly if parked overnight or after work. Maybe lowering the idle will restrict enough fuel into the engine while riding to not flood the engine for the next restart. Any thoughts? Thank you.

[zugzug]

Im gonna echo the same thing the rest of the posters are saying. These are classic symptoms of valve adjustment needed. No matter what else you do its not gonna fix the problem if you need to adjust your valves so ya might as well go ahead and do it

[scooterdocfan8817]

Thanks. I don't think it is a flooding issue now. I tried an experiment. I rode it for a good 15 min and tried to restart a few minutes later with no luck. I purchased one of those portable jumpstart units that fits under the seat and once I attached it to the terminals it started just fine. Looks like a battery issue rather than a flooding one. When I have the valves readjusted I will purchase an new battery. Do YY250T's have alternators? Maybe I am having recharging issues while I ride. I took the idle down to 1800 like Allyoop suggested and after the scooter warms up I have no problems at stoplights. Good responses all.

[scooterdocfan8817]

Sorry. Forgot to thank Cruiser, as well. Thanks for the 1800rpm's suggestion.

[Cruiser]

Your welcome. All scoots have the equivalent of the automotive alternator. The smaller scoots use both AC and DC off the alternator to supply their electrical needs (lights, instruments, ignition, and battery charging, etc.). Higher end scoots rectify the full output of the charging system so that everything runs on DC similar to cars.

The China scoots have fairly anemic charging systems and can easily be overloaded so that the battery will eventually go dead if ignored. Changing as many lights to LED's as possible will improve the situation. The OEM batteries are not known to last very long or have much power. A good aftermarket sealed lead acid (AGM) battery with at least a 10 ampere hour rating will help a lot. Most people rely on a permanently mounted LCD voltmeter to monitor the charging of the battery. Ideally the reading would be 13.5 to 15.0 volts while cruising down the road.

A fully charged battery at rest (engine off) should be at least 12.8 volts.

[scooterdocfan8817]

Wow. Thanks Cruiser. I will get a new battery asap. The previous owner said he would attach a trickle charger every night. Now I know why. I'll invest a little extra into a quality battery. And I won't forget the valve readjustment on the next tune-up. It looks as though we have the same scoot, huh. Thanks, again.

[ccprof]

About the charger - I keep mine on a Battery Tender Jr and swear by it! I plug in after every ride. With EFI, you're dead with a low battery.

[scooterdocfan8817]

Battery Tender Jr. Got it. I hope its available at my local auto parts store. ;D

[Cruiser]

This Schumacher battery maintainer/charger from Walmart is also an excellent alternative to the Battery Tender JR.:

www.walmart.com/catalog/product.do?product_id=13005742&findingMethod=rr

[scooterdocfan8817]

Looks good and only $19 bucks. Thanks for the link.

[Cruiser]

You're welcome.

[yoster]

Ditto on that charger. I use it on my scooter and deep-cycle trolling motor batteries on my boat. Works great!