|
|
Post by wutzthedeal on Jan 22, 2013 12:44:28 GMT -5
Scootercide; that was funny, huh? I just made that up.
Heb me now.
I've read the entire internet, and still can't fix it this time.
A few days ago, I started my scooter to let it warm up. For the first time ever, it died after sitting there, idling for about 5 mins. Tried to restart, no luck. Smelled fuel; figured flooding. Left it a half hour, went back out, restarted fine, ran 3 minutes, died. Smelled fuel again.
Figured it must have something to do with all the water I went through testing my CorrosionX a week before; hadn't considered air filter may have taken in water. Brought it in, cleaned and dried it, replaced it, scooter started and stayed running. Put about 20 miles on it, no problems. Next day, put about 80 miles on it, no problem. Started it for short trips several times in between, no problems.
Last night, I start it, it runs for 5 mins, dies. Though I know it's not the air filter, I bring it in and dry it anyway. This morning, the first thing I did was adjust the valves. I have spark. I have fuel delivery, at least at the entrance of carb. I did not smell fuel this time like it was flooding. I don't have starter fluid, so I just dumped a half of a drinking straw full of fuel in the carb. I tried my old CDI (uncertain if it's good). Tried my old coil and old sparkplug, even though I was getting spark with my new. None of these things worked.
Removed autochoke; needle/spring seem to be extended, but had that been the problem, why wouldn't fuel dumped in the carb start it?
Good compression, good spark, clean, dry air, arguably good fuel. I'm lost. No sleep either so brain isn't thinking anymore; did I overlook something?
|
|
|
|
Post by antchainscoot on Jan 22, 2013 13:14:48 GMT -5
Could you check the voltage of your battery with a multimeter. I don't know if that is the problem, but its worth a try. Maybe it needs a charging with a battery charger. I use a Yuasa Smart Shot Charger. I don't always rely on the scooter rectifier. When I have trouble starting my scooter it is always the battery not having enough cranking amps. If I try too many times I smell fuel because I'm probably flooding the carb.
|
|
|
|
Post by wutzthedeal on Jan 22, 2013 13:18:00 GMT -5
Could you check the voltage of your battery with a multimeter. I don't know if that is the problem, but its worth a try. Maybe it needs a charging with a battery charger. I use a Yuasa Smart Shot Charger. I don't always rely on the scooter rectifier. Yeah that's good; should have mentioned that I guess. Battery's great and kept up with Battery Tender Jr. I tried to measure the resistance on the autochoke; one site said it should be 10-20 ohms... I was measureing like .4 ohms but that was without ignition on or anything; site didn't say in what condition to test it. |
|
|
|
Post by antchainscoot on Jan 22, 2013 13:29:34 GMT -5
Could you check the voltage of your battery with a multimeter. I don't know if that is the problem, but its worth a try. Maybe it needs a charging with a battery charger. I use a Yuasa Smart Shot Charger. I don't always rely on the scooter rectifier. Yeah that's good; should have mentioned that I guess. Battery's great and kept up with Battery Tender Jr. I tried to measure the resistance on the autochoke; one site said it should be 10-20 ohms... I was measureing like .4 ohms but that was without ignition on or anything; site didn't say in what condition to test it. Even with the multimeter showing a proper voltage, the battery could still not be strong enough to start the scooter. Just today, I had my battery for the 150cc scooter on my charger for over two hours with the green light showing it was fully charged with a 12.7 voltage. Hooked it up to the scooter and it wouldn't start. Placed it back on the charger for a little bit. Checked the battery voltage with a multimeter showing 13.3 voltage. Connected it again to and the scooter started on the first try. |
|
|
|
Post by wutzthedeal on Jan 22, 2013 13:37:56 GMT -5
Was it turning over at 12.7V? This doesn't start with kick or electric and I've definitely strained the battery turning it over about 100 times but I just measured it at 13.6 after disconnecting batter tender so that's still good.
|
|
|
|
Post by millsc on Jan 22, 2013 13:50:33 GMT -5
could be an air leak somewhere bad hose, manifold etc
|
|
|
|
Post by wutzthedeal on Jan 22, 2013 14:15:37 GMT -5
could be an air leak somewhere bad hose, manifold etc The only hose problem I found was the drain tube from the carb; the short one. It had tears near where it was connected to the carb; I cut the edge off that had the slits and put it back on. I've checked every hose and now every wire. Plenty of SeaFoam in the tank (about 2 oz.) and only use 93 fuel. |
|
|
|
Post by wutzthedeal on Jan 23, 2013 10:11:54 GMT -5
To sum up:
I have spark, I have compression (blew finger off of hole), and I have fuel delivery w/wet sparkplug after start attempts (which smells like gas, as it should). That's it. If you have a cracked piston, compression wouldn't be good enough. Every test is passing on the scoot. I ordered another CDI, hoping that maybe I just blew my 2nd one with water (again--this time, testing the effectiveness of CorrosionX). Will update.
|
|
|
|
Post by snugglebunny on Jan 23, 2013 10:24:51 GMT -5
do you have a car/truck available?
try jumping it with that vehicle
MAKE SURE THE KEYS ARE OUT OF THAT VEHICLE!!!
if that starts it, it is the battery. not enough cranking amps.
if not well..............
now this isnt recommended by anyone,
but when i go to start mine.
i flip the kill switch, turn the key, crank it wot ONCE
hit start button. 1st time never works, just like a bump, but i do that for ONE second, wait one second hit start again
always starts
|
|
|
|
Post by tortoise on Jan 23, 2013 10:53:00 GMT -5
have fuel delivery w/wet sparkplug after start attempts Insert a drinking straw into spark plug hole to verify timing marks are aligned at piston TDC (to rule out a sheared flywheel woodruff key). Test stator ignition winding and trigger coil volts . . guidelines. Pinch off vacuum line to fuel tank petcock to rule out excessive fuel bypass via a deficient diaphragm. |
|
|
|
Post by wutzthedeal on Jan 23, 2013 11:36:51 GMT -5
I'm positive it's not the battery; it's a brand new battery, and I can turn over the engine 100 times if I want. It's not the battery. The voltage is good, it's new, and it's cranking; there is zero indication that there is any problem with the battery. Thanks tortoise; I'm going to read over that; probably won't try more work til I try a new CDI but that will be my next check if the CDI doesn't fix it. Going to read over the guidelines now for the stator (but it's odd that the page says, "No spark?" since that's not one of my problems).
|
|
|
|
Post by skuttadawg on Jan 23, 2013 11:49:39 GMT -5
Check the float valves as it may be over filing the bowl since you smelled gas
|
|
|
|
Post by wutzthedeal on Jan 23, 2013 12:16:21 GMT -5
Thanks skutta; I'm re-reading the entire ScootDawg manual right now for Chinese scoots. I'm gonna memorize it if I have to. Maybe something will jump out at me but I'll try your and tortoise's suggestions.
|
|
|
|
Post by Bintelli - Jason on Jan 23, 2013 14:28:19 GMT -5
Couple of things:
I would drain all of the fuel, and refill with fresh. Costs 3 bucks and eliminates the gas from the equation. Do not add any seafoam to it.
I would check the carburetor as well. Sometimes ethanol messes with the needle and will cause issues as you described.
|
|
|
|
Post by wutzthedeal on Jan 23, 2013 15:02:23 GMT -5
Couple of things: I would drain all of the fuel, and refill with fresh. Costs 3 bucks and eliminates the gas from the equation. Do not add any seafoam to it. I would check the carburetor as well. Sometimes ethanol messes with the needle and will cause issues as you described. What do you mean messes with the needle? How would I know if this event occurred? |
|
|
|
Post by tortoise on Jan 27, 2013 18:19:41 GMT -5
Gremlin . . "I'm measure no AC voltage at the red/black wire at the CDI while trying to fire."
|
|
