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Post by speedracer on Apr 8, 2011 10:24:28 GMT -6
Reply 21 Thanks good things to check, which I did most of. No problem with plug as it was changed a few hundred miles ago. Tonight I will start in the garage and look for arcing. Both connectors to the coil from the CDI are on tight. I removed both and even sprayed them with electric contact cleaner. Both are on tight. I did take a plastic tie and secured the spark plug wire to a piece of plastic so it was not close to any piece of metal.
I just came back from a 40 mile ride and the scoot stayed running, although it still hesitates on take off, and after being shut off for 10 minutes it will not start without giving it throttle and will stall right away as soon as I stop giving it gas. This repeats several times before it continues to run steady and smooth.
I have no clue if a coil can overheat or lose power. I am getting frustrated with all this, so my last resort was to order a new coil. If the coil is not the problem then I am at a stand still.
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Post by speedracer on Apr 7, 2011 17:39:20 GMT -6
Next item eliminated is the CDI. New one arrived and still the same. I have checked the spark plug for spark and it is not blue at all more of a white then anything. Also got a slight shock from wire. Wondering now if the coil is and has been the problem.
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Post by speedracer on Apr 7, 2011 9:58:26 GMT -6
OK, the problem is not a dirty pilot jet or main jet. Both were clean and I installed a new pilot jet I had and never used. Once the scooter starts and after the choke kicks off the scooter stalls and needs gas to get going again. As far as my knowledge goes, I used carb cleaner throughout the carb. So I remain at wits end.
If anyone is interested the size of the carb bowl screws they are M4-.70 X 16 Lowes has them.
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Post by speedracer on Apr 6, 2011 19:31:01 GMT -6
Alley, I couldn't get the vise grips to turn those screws so I did what I had to do and used a screw extractor on them. 5 minutes and they were out.
I looked at the pilot jet and it sure seems clean. It has 38 marked on it and I had a new 38 pilot jet from my GY6 150. Well they are exactly the same size. the small holes line up, the length was the same so I screwed it in and left the rest for tomorrow.
Of course now I need 4 new screws, but I am not sure of the size.
Speed Racer
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Post by speedracer on Apr 6, 2011 17:11:23 GMT -6
OK, I was able to remove the carb. Now of the screws are in so tight that I will strip them soon. I have tried 3 different screw drivers and none will turn a screw. Who the hell put those screws in?? I have put a hammer to the end of the screw driver, but that still will not loosen them. Any suggestions appreciated...
Thanks, 1 foot in the grave Speed Racer
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Post by speedracer on Apr 6, 2011 15:47:53 GMT -6
Well stupid is the way it is acting. Getting the carb out is going to be less of a hassle then I thought. When replacing it, the front intake goes in first I take it? Also I have a brand new 38 size Jet for a GY6 Carb, I'm betting it is not the same as the one in the 54B.
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Post by speedracer on Apr 6, 2011 12:32:00 GMT -6
You really can't count dropping the bottom pan as removing plastic. When I did the exhust valve I did remove both sides of the bottom plastic panels for a bit more hand room. I watched that video on doing a value job and wow after watching that there wasn't a piece plastic on the scooter. That has to be an all day job doing it that way.
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Post by speedracer on Apr 6, 2011 12:26:20 GMT -6
Hey Doc were are all getting old and forgetful. Accept for the aggravation of getting to the Dr my report was good. Thankfully my pace maker wasn't made in China. It's working good.
I wanted to give the new CDI a try first before removing carb and cleaning jets, but as usual the USPS is back to it's slow mode again. It was shipped from IL on Friday via "priorty mail" not sure how they came up with that name. Well it hasn't showed up today.
I do have a question on removing the carb. How do you remove the intake cover? Do you have to remove the entire air filter to get at it, or do you have an easier way? I thought of bad gas myself and since have switched from Hess to Sunoco. I never thought I would have a clogged jet since I always use Seafoam. Get to wonder if that stuff actually works or is a waste of money.
Thanks
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Post by speedracer on Apr 5, 2011 20:18:42 GMT -6
Thanks Alley, I will take the carb off and clean out the jets in the morning. Another fun day of retirement in the garage. Good thing my life insurance is all paid up, as this scooter will be put down on my death certificate as the cause of death.
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Post by speedracer on Apr 5, 2011 19:52:31 GMT -6
Alley, Yes, the wired from the CDI to the coil are both on tight. Funny though after I pulled off the cover on the coil and the wires seemed tight and after putting the cover back on the next day is when it died on me.
To go about 45 to 50 mph the tach is usually between 4200-4500 rpm's. Let me ask you this if I take off and go WOT up to 50 mph am I still using the pilot jet or is the main jet taking over?
I have a 12 year old lawnmover which all I do is change the oil, change the filter, and put a new plug in every year and it always runs great. I don't get how a scooter can have so many problems.
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Post by speedracer on Apr 5, 2011 19:07:02 GMT -6
Replaced enricher a few months ago. Haven't checked or cleaned any of the jets, however there hasn't been a time when I put fuel in I didn't add SeaFoam to the tank. Was hoping you thought it was the CDI.
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Post by speedracer on Apr 5, 2011 18:28:57 GMT -6
Does anyone think my problem maybe the CDI? It sat since Monday afternoon and all day today. Been waiting on a new CDI, but hasn't arrived, hopefully tomorrow. In any event just a few minutes ago I turned the key to start, hit the starter button and off it went. One minute later the idle fell and it stalled. Give it some throttle and it starts up. Once warm it stays running except for yesterday when it just gave up.
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Post by speedracer on Apr 5, 2011 14:56:27 GMT -6
Reply 15. 30 minutes without removing a piece of plastic? Intake valve was easy with battery box cut out. Real curious how you reached bottom valve without taking off bottom side panels and dropping bottom cover.
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Post by speedracer on Apr 4, 2011 19:47:28 GMT -6
I have the 54B and I use 12 g Dr Pulley sliders and had no problem at all with take and with top end speed. Once you clean out all that greese you will enjoy the sliders. BTW I weigh 180 and 12g work fine on my scoot.
Ce, I believe JR uses 12 gram sliders as well. He suggested them to me.
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Post by speedracer on Apr 4, 2011 18:58:29 GMT -6
Well it did go 3900 miles without every stalling and not starting. Today I went to a Dr's appointment which is 8 miles from home. Scoot started right up and off I went. Well about 3 1/2 miles into the trip I was running at about 45 mph all was well. Then I could feel a loss of power and looked at speedo and was doing 40 mph. Gave it some gas and it seemed to pick up for a second or two and then lost power again. I knew then what was coming the big stall. Now I am down to moped speed and pulled into a parking lot where the engine just shut down. I tried to restart it, but no go.
My first thought was a vacuum hose, but not the case all where connected and tight. I knew I couldn't be out of gas as it had a 105 miles since my last fillup, but I shook the scoot and could hear gas sloushing around. The cursing started as I tried several times to get it started, but nothing happened, except battery was starting to wear down. So I let it sit for 15 minutes and tried it again and off it went. It was running at about 1000 RPM's at first. Gave it some gas it went back up to 1800.
I went the rest of the way to the Dr without issue. On the way back it did it again. Loss of power then stalled. I just let it sit for 10 minutes and it started and off I went again for a few miles then once again a stall. Waited again, got it started and stopped at gas station to fill it up. Made it the rest of the way home and now it sits in the garage.
The last few days on making trips to the store the scoot starts cold in a flash, but let it sit at the store for 10 or 30 minutes and it won't start unless I give it throttle. Even then if I let off on the gas it will stall. Then by itself it idles just right and will not stall at all. I could run it all day without a problem. Today it certainly got a lot worse.
New plug, new gas filter, changed oil on Saturday. Values have been adjusted. I ordered a new CDI last Friday in a finally effort, but it hasn't arrived yet. I am too old to take it out again without resolving this issue. BTW Dr was heart Dr and blood pressure was up when I finally arrived there.
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