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Post by kidda on Feb 12, 2015 13:23:36 GMT
Took my scooter out for the 1st bit of a run today,did about 4 miles then it just cut out, left it a minute then tried start it it kicked straight in? Got to my destination and stopped for 30 mins then set off again then after about the same miles cut out again then tried start it again it kicked straight in??ive just gave it a full engine rebuild with a malossi 166 kit on,drilled air filter,expansion pipe,upjetted carb,21 tooth clutch and fast flow tap. Runs nice no bogging etc just dies after a few miles but restarts fine? Any ideas folks? Cheers
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Post by henri on Feb 12, 2015 19:21:20 GMT
how long did ya have to leave it to re-start , an how does it die, sudden or stuttering halt ,more info needed ,does it run more than 4 miles after the initial dying ,??, H
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Post by rab on Feb 12, 2015 20:16:10 GMT
id say check for a fuel flow problem possibly faulty tap or blocked tank breather cant see it being a soft seize unless you gave it some stick as the mollossi likes to run hot and fast but it is new and there temprimental highly strung bits of kit.you will find the mollosi is a greedy feker on fuel so as i first said check fuel flow. if you did not do it when you did your re build take the tank off swill fuel around the tank in fact shake the feker round then empty the bit of fuel out you will find it is full of crap and if it is thats come from the tank filter and its likley that was your cutting out problem.if not then move on to the carb for checks jet size ? crap in jets? dodgy float and so on
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Post by vespasco on Feb 12, 2015 20:24:34 GMT
If youve only done a few miles on the kit then take it easy!
Check your fuel supply especially your float.
More info needed, as above
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Post by kidda on Feb 12, 2015 20:48:19 GMT
It just proper died no spluttering or anything just as if you turned the ignition off while still riding, it kicked litterally straight back in give it a minute or so,only taken it to 40mph no faster and nice and steady, I do have a gut feeling about the fuel tap the old saying buy cheap buy twice and it's not a known make ie sip or bgm,will have to take it for another run to gain more knowledge of the problem, my 1st thought it was a heat seizure but it ran ok afterwards? I'll keep you updated after the next test run
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Post by vespasco on Feb 12, 2015 21:17:41 GMT
BGM fast flows are definitely the way to go,,,they're only like, £13 at the moment, (if you buy from europe/scooter centre). Its like theres a sale on with all those tempting € prices!
But if it cuts out as suddenly as you describe then dont rule out an electrical/ignition fault.
Check the obvious first, spark plug/lead/cdi connections. And if you can, the ignition circuit, from the stator onwards.
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Post by kidda on Feb 13, 2015 6:43:55 GMT
Only did a couple of mile after it died and was fine,no misfiring or anything, going check the wiring/connections from cdi because I have replaced some off the old wiring, my 1st thought was a heat seizure because I have had a small oil leak from the oil pipe (which I hopefully rectified before I went out). Not entirely happy with the new tap so going order a good make, sip or bgm. Maybe the engine needs time settle in after all the work that's been done on it, I'll take it for another run see what happens, the engine itself runs smooth plenty of power uphill etc was really impressed with the performance until it just died, only adjustments made were to the mixture because was running rich, could be a x-file moment???
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Post by kidda on Feb 13, 2015 7:32:32 GMT
Now here's 1 to throw into the mix, got chatting to my m8 who knows a touch about scooters says it could be an airlock in my tank and he might be onto summat because before I went out I did fill right up,going check it out l8r
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Post by henri on Feb 13, 2015 10:09:35 GMT
get a bgm rather than sip ,better quality , an also check the breather hole in tank cap just to rule it out ,but a dead stop without locked back wheel doesnt say airlock or seize to me ,my moneys on a ignition/electrical problem, fuel starvation gives loss of power/stuttering stop, usually .bit of a weird 1 , H
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Post by rab on Feb 13, 2015 18:04:31 GMT
if you have an air pressure lock then you need to clear the tank breather.you havent by chance changed the seat or put a seat cover on have you ? as this can restrict the breather to the carb. it may sound daft but a seat cover used to cut mine out after a few miles and it would fire straight back up
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Post by kidda on Feb 13, 2015 19:58:25 GMT
No I haven't changed the seat or put a seat cover on but does seen a touch of a logical explanation because its the 1st time I've filled the tank to the top and really made sure the cap was down tight,going check the breather also all the cdi connections and take it for a run on Sunday (weather permitting) see if it happens again.
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Post by vespasco on Feb 13, 2015 20:08:14 GMT
Does the tank 'pop' when you lift the cap?
Forget the sip fast flow, lots of bad reviews. Ive only heard good reviews of the BGM FF. I just checked, they really are only £13.25p ! Bargain i think.
Id also expect the same as henri ^^^
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Post by sbwnik on Feb 13, 2015 20:56:27 GMT
83 P125? Is it points or electronic? If points, then I'd suspect a dying capacitor. It doesn't sound like an airlock to me, my experience has been that they cough and splutter rather than just die.
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Post by kidda on Feb 13, 2015 21:14:37 GMT
It's a 83 px125e think it's got points,going have a mess with it over the weekend see if I can get to the bottom of it
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Post by sbwnik on Feb 13, 2015 22:45:14 GMT
If it's got points then I'd start with condenser, it has all the hallmarks of impending electrical death. It's easier to fix one at home than at the side of the road.
BTW, there's a traditional bikers trick that makes life easier for condenser ignition if you want to know it
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Post by kidda on Feb 13, 2015 22:49:42 GMT
Any information is greatly appreciated
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Post by rab on Feb 14, 2015 14:32:33 GMT
I actualy forgot the fact an 83 could have points as mine has an 06 engine I'll have to get out of that habit
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Post by henri on Feb 14, 2015 15:19:06 GMT
yep as sbwnik says i'd switch ya condenser out , tho when there failing like coils they get hot an usually will take 5-10mins to cool enuff to work again .
an i hope niks "biker trick" isnt the get ya home when a condenser shorts of just disconnecting it ,as you will get home but will burn a set of points doing it , more likely its the mount it outside the engine where its easier to swap out ,an stays cooler/lives longer .
if it happens again feel the coil ,warm=ok ,hot/burny-ouchy =failing coil , just re-read ya post n ya mention a cdi so might have electronic ,no condenser then but same deal with cdi as coil , H
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Post by kidda on Feb 14, 2015 17:56:56 GMT
Think I've seized the engine????check out my new thread see what you think?cheers
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Post by kidda on Feb 14, 2015 18:20:40 GMT
Also it only dies when in 4th gear at 1/4 throttle pottering doing about 40mph
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Post by kidda on Feb 14, 2015 19:28:35 GMT
Also if I've got the wiring wrong on the cdi/coil would it still run?
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