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Post by dragono on Apr 4, 2014 20:02:30 GMT -5
Ok so long story short. Got broken 150cc scooter. Cleaned carb, replaced spark plug, adjusted valves. She ran like a champ.
Scooter was dirty so I Washed it off very well , however I left the seat off, but carb,intake and airbox was connected so I don't think any water got into the engine. Few hours later I tried to restart it to No avail.
Things that happened in between wash off and fail restart:
-disconnected cdi tried it on another scooter
-disconnected ignition coil tried it on another scooter.
- removed spark plug
Things i've done to remedy it:
-Tested compression read at about 180psi
-Checked valve clearance
-Checked Spark by holding spark plug near metal (got an arch up to a 3/4 inch away from surface)
-Remove sparkplug and ran scooter to try see if it was flooded.
-Tried to spray starter fluid directly into intake to see if it would start.
Like I said it ran fine I washed it off set for a few hours and no start no sputter but nice compression nice fat spark and tried to spray starter fluid into hole to get a sputter.
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Post by skuttadawg on Apr 4, 2014 21:20:49 GMT -5
Sounds like you may have gotten water in the carb . Try draining it with the drain plug on the bowl . If it only wants to start with a puff of starting spray then it sounds like a fuel delivery or fuel contamination issue . When my 2t was new it had always ran perfect . One night I got gas from a shady place . Next morning it would not start . It did fire a time or two at first then nothing . I checked to see if the sparkplug boot came off and it was intact . Removed the plug and it was firing . I knew compression was good as it was new and I pushed down on the kick starter by hand to get a rough idea . Being under a warranty I called my dealer . He told me they just had a scooter in the shop with the same story . Everything was good but no start . They drained the carb and tank , then refilled with gas from a trusted source and tada it fired right up so did mine . Try not to use starting spray as the ether is a solvent .
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Post by skuttadawg on Apr 4, 2014 21:42:35 GMT -5
I would get a weight kit so you can try out diff weights and mix them up . For example 3 x 5gs and 3 x6gs to equal 5.5gs .
My TaoTao came with 8g and I went with 5g rollers which really helped take off , midrange and uphill while having the same top end only more RPMs . Too light and it over revs and lose on top end . The 1k , 1.5k and 2k clutxh springs would need heavier weights than the stock clutch springs require as the engage at their rating than much more than stock . A 1k opens 1,000 RPMs higher than stock . The springs can help on initial takeoff . I have Hoca 1.5k in my 2T and I was running 5g rollers like I did on my 4T but I replaced them with 8g Dr Pulley sliders as they are so much better than rollers . I never had a problem going up hill , in fact after putting on a BBK I can go faster uphill than downhill as I need taller gears . I tried to put on a 1.5k contra spring but with the Hoca bb torque spring base I could not compress it together .
Here is an example on how diff set ups work , my 2T vs my neighbors 4T I smoke him big time on take and midrange , top end and a huge diff in going up hill . Now when we went for a ride the only time he would keep up and yes he did get me a lil while going hill as my gears are so low I can redline uphill and I can not push it hard downhill without over revving .
I would try 1k or 1.5k as 2k seems to wear out the belt faster and can glaze the clutch pads .
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Post by dragono on Apr 4, 2014 23:07:02 GMT -5
I think your second reply was meant for another dawg.  However If i remove the carb and spray directly down into the intake I get no reaction. Usually when I have done this with other scooters anything with this kinda of compression will sputter right up and die after a few seconds. This one isnt giving me anything. |
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Post by skuttadawg on Apr 4, 2014 23:19:14 GMT -5
Ooops my bad . Since you have spark , compression and you said the valves are good try draining out the gas tank and carb and refill with good gas
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Post by wilds on Apr 5, 2014 1:40:28 GMT -5
it should at least come to life or react when you spray stareter fluid in it, if everything else is ok...
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Post by alleyoop on Apr 5, 2014 1:50:59 GMT -5
Did you test for Spark holding it against the valve cover or motor?
If you say it was running fine before you washed it and now it just cranks I would suspect water in the fuel IF you have Spark. And if you have spark take the vacuum line off the intake and squirt a little bit of gas directly into the intake it should fire at least once.
Now getting water in the carb is hard to do since that is sealed so I would check your Air Filter maybe that is full of water.
Alleyoop
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Post by geh3333 on Apr 5, 2014 2:42:14 GMT -5
I would keep as much water away from the these engines as possible , I know you should be able rto spray the engine off when everything is sealed however there is alway a chance of getting water in it . Some of the stock air boxes have square holes in the bottom where it would be easy to get water into the carb or even the head . Since it ran before u spray the scoot off there is a very high chance it has water in the carb .
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Post by dragono on Apr 5, 2014 8:36:16 GMT -5
UPDATE: So it turns out that my ignition coil is giving me a nice blue spark with spark plug into of engine on frame and nothing when I put it inside the engine. I think i verified this by the shock test. I held it outside next to ground and saw the spark felt the shock. Put plug back into engine with ignition coil attached and no shock. (ignition coil isnt completely incased in plastic so i can still touch it when its in the engine) Oh yea and i tried another coil and the same thing happened.
Nevermind: It sends sparks to ground which is why it doesnt shock you. Im stuck back at square one.
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Post by dragono on Apr 5, 2014 16:33:47 GMT -5
FIXED: The coil was sparking when it wasnt grounded. Took me all day to make the connection. Must have been when i tried it in the kymco scooter I had. Anyway swapped out the coil and the cdi and she works like a charm now.
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Post by geh3333 on Apr 7, 2014 1:37:34 GMT -5
Still could have been caused by the water , just be careful next time u wash it .
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Post by rockynv on Apr 7, 2014 4:20:15 GMT -5
Still could have been caused by the water , just be careful next time u wash it . The coil is mounted in a protected location for a reason. The least bit of water infiltration and you will have problems. Sometimes a good spray of wire dryer over the coil, high tension lead and spark plug boot will get you past these types of problems. Sometimes leaving the bike overnight with a fan or trouble light underneath it (not in-line where gasoline or oil may drip) will dry things out and get you going again too. |
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Post by JerryScript on Apr 7, 2014 8:50:49 GMT -5
WD40 = Water Displacement formulae 40  |
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..BAD TO THE BONE..
