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Post by soulraver on Jul 15, 2014 15:50:27 GMT -5
Hey guys, i've tried searching for answers but could not find anything, my scooter gets strong spark, fuel and has great compression, but no start.
Here is what happened, yesterday i took it out, and driving home my exhaust pipe cracked and was leaking exhaust badly (i fixed that this morning), i kept driving home about 4 miles... well going down one hill i hit about 58mph and the scooter started acting weird, loosing power.. i limped it home barely, it was getting worse, and left it for today, this morning i can't get it to start.
I checked the spark plug and it looks good, gets really strong spark, the carb is a week old and fuel is getting to the engine, tried a little starting fluid and no change. Compression is good. When revving it sounds normal, but every once in a while it will sound like it wants to start, and just does not. I checked the kill switch and security switches and all are okay. I don't suspect them since it was running so rough yesterday.
Could it have overheated and caused damage somewhere? With compression being good I don't understand why it wont start
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Post by tvnacman on Jul 15, 2014 16:47:30 GMT -5
check your valve lash .
John
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Post by jjoshua20213 on Jul 15, 2014 17:51:07 GMT -5
Cracked exhaust= Exhaust leak which leads to hot exhaust valve.
The valve gaps tends to close a little when they get hot..
Check both an adjust accordingly.
Also if you had good gas, compression, and spark it wouldn't have a choice but to combust.
Tight valves lead to compression loss. As of other things, but this is more than likely your problem.
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Post by soulraver on Jul 17, 2014 20:20:16 GMT -5
You guys were spot on, my compression tester was giving me false readings, valves were both too tight, put them at .04, now i get 130 psi, scooter starts! But now on deceleration, especially 30mph and less i get really bad vibrations, on acceleration and top speed nothing, engine seems to run strong and good, but only on deceleration.. It didn't do this before all this not running stuff.. While working on it i only took off the valve cover and adjusted valves, changed spark plug
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Post by jerseyboy on Jul 17, 2014 20:59:35 GMT -5
Sounds like something in the CVT area,,maybe the rear bearings going bad...always something..lol
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Post by soulraver on Jul 17, 2014 22:05:13 GMT -5
Yay! haha is there a way to check the bearing or do i just replace it and move on to the next possible thing it could be? lol
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Post by tvnacman on Jul 18, 2014 8:08:49 GMT -5
Open it up and check the bearings . I would check in the cvt first , tollers clutch pads ect...
John
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Post by tvnacman on Jul 18, 2014 8:09:04 GMT -5
Open it up and check the bearings . I would check in the cvt first , tollers clutch pads ect...
John
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Post by tvnacman on Jul 18, 2014 8:09:21 GMT -5
Open it up and check the bearings . I would check in the cvt first , tollers clutch pads ect...
John
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Post by tvnacman on Jul 18, 2014 8:09:46 GMT -5
Open it up and check the bearings . I would check in the cvt first , tollers clutch pads ect...
John
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Post by soulraver on Jul 18, 2014 17:06:05 GMT -5
Okay I'm going to do that today, while I'm working at it I want to fix by oil leak, it's spraying oil in the front off the engine, it's getting all over the inside of the seat and engine any idea where it could be coming from? Thank you everyone for all the great input
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Post by gatekeeper on Jul 18, 2014 17:16:08 GMT -5
If it just started leaking it is probably the valve cover gasket or the vent hose on the valve cover is cracked or fell off.
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Post by geh3333 on Jul 18, 2014 20:15:14 GMT -5
If it's spraying everywhere its more then likely the vent hose coming from the valve cover .
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Post by geh3333 on Jul 18, 2014 20:16:54 GMT -5
Oh yeah , how did you fix the exhaust ? I would expect the vibration is coming from something that has to do with the exhaust .
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Post by soulraver on Jul 19, 2014 14:43:23 GMT -5
The exhaust i took off and welded the pipe where the crack was, but i did have to make a new bracket for the muffler as the old one broke off, i noticed its mostly vibrating when decelerating from 30mph down to 20 and.. im going to take a look right now and hopefully fix both problems! This is the most helpful forum i have been a part of  |
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