Lexmoto XTRS, engine problems?

[frankcom]

Hello! I this is my first bike and I am clueless so please bear with me and my limited knowlage!
I brought a 2011 lexmoto xtrs a couple days ago, and while riding it back home, about 50 miles in the thing just cut out on me, engine died and I had to roll it to a side road to park it up because when I tried to use the electric start it clicked, but the engine wouldn't start or turn over, and the kick start wouldn't even move. The next day a friend of mine took the left side engine casing screw off to turn the wheel thing (fly wheel?)behind it using his socket set and the pistons started to move after a little resistance, so I tried electric starting it and kick starting it again and the kickstart moved, and it seemed like the pistons were moving again but the engine just wouldn't start.

What should I do now? Anything I can try and check?

(on a side note I found that the choke is very stiff, cable might be stiff, but could that be related at all or just coincidence?)

Thanks all!
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Lexmoto XTRS 2011

[Rogerborg]

[moonzoomer]

Was there any oil in the engine?

[frankcom]

No, it just cut out suddenly, no warning.
no noises or struggles either, it was entirely fine, then all of a sudden it cut out


There is definitely oil in it, recently serviced too according to old owner.

At first it didn't turn over but I just tried again after spinning the fly wheel thing and the bike turns over and actually starts, but is making a rather disturbing clunking sound while running before cutting out, heres a video of what's happening: https://www.youtube.com/watch?v=W4iTzvJaAE8&feature=youtu.be
(Thinking about it I have never touched bike mechanics before so I probably can't do it myself)



I assume I have a spark because the engine is now starting, or should I still check?

All the electrics work,
and I can check the pressure now, I'll do that now!

Thanks for your replies all!
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Lexmoto XTRS 2011

[Rogerborg]

Good job on the video. You have a lovely voice.

[Hugh Farking Cant]

That sounds like a big end shot to me .
Knocking is at same speed as crank revs.
It doesn't idle because the engine is now very unwell.

Were you thrashing it ;low on oil ?

Choke problem is least of your problems.

Nice vid. mind.

[frankcom]

Why thank you

No, I'm pretty sure the oil is fine, however the dip stick appears to have been broken

Ahhh okay, thanks for your help guys!
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Lexmoto XTRS 2011

[P.]

That oil is not fine.

That is out of oil.

That is what a mechanic would call "fucked"

I would call it £50 and I'll take it, but only if you are nice. Time to buy a new bike.

[blurredman]

No matter what the previous owner says, Always do a full service yourself as soon as you get a bike/car.
____________________
CBT: 12/06/10, Theory: 22/09/10, Module 1: 09/11/10, Module 2: 19/01/11
Past: 1991 Honda CG125BR-J, 1992 (1980) Honda XL125S, 1996 Kawasaki GPZ500S, 1979 MZ TS150.
Current: 1973 MZ ES250/2 - 18k, 1979 Suzuki TS185ER - 10k, 1981 Honda CX500B - 91k, 1987 MZ ETZ250 (295cc) - 40k, 1989 MZ ETZ251 - 51k.

[P.]

I check the oil whilst going over the bike...

That definitely sounds like melty melt.

[Teflon-Mike]

A bearing has colapsed.
Probably the big end.
Could you fix it?
Well, if you have two hands, two eyes, half a brain, a big bag of spanners, some space, and a bit of money.... probably.

Engine would have to come out of the frame, and be stripped down.
The big end is the bearing in the bottom of the con-rod. Sits on a pin between the two flywheels, attached through 'interferance fit'. Ie the holes are slightly smaller than the pin, which is rammed in with a couple of tons of pressure.
Means you need to get the crank professionally reconditioned, by chaps with big press and balancing equipment. (Have seen it done by old flat-cap-chaps, on old brit bikes with a fly-press and copper hammer; but bit of a dark art) Or buy new crank and con-rod assembly.
Rough guess, that bit, recond or replaced, about £150, up.
New gaskets, new main bearings, anything else the motor needs whilst you are in there? You could spent £500 on that engine, to make like new.
Pay a mechanic? Well it's probably a couple of days of work-shop time, if you gave them the engine 'loose' so, at £30 an hour, add another £250.
So, basically, to pay some-one to fix it, its probably well beyond ecconomical repair.
Get brave, get the spanners out, and try and DIY... well, doing a 'propper job', still probably boarder-line whether it's worth it, and you could do the job for less than you could get another bike, if at all.
Panic-Mechanics of desperation? There are plenty of chinky-bikes you might pillage a whole motor from, going for a couple of hundred quid or so; but you are into a mire of compatabilty issues, depending what they came from, and may have to get a bit crafty a bit quick, to match electrics, carbs and stuff... AND hope that motor you get has a bit more life in it than the one you have had before you got it.
Personally, I'd strip the motor you have; and get brave trying to follow the Haynes Manual for generic Chinese motorcycles.
If you are lucky, you will get away with little more than a gasket set and a few bearings, on top of a crank-recon, or if very lucky, you might find a half decent crank assembly 2nd hand on e-bay. And have a motor at the end of it, that's cost you as much as a 'take out' from chinky scrapper, but with more certainty it's 'good'.

There's no nice answer, I'm afraid, but what you got is scrap.

Crack out the spanners, and try make good; you got little to loose, and you are likely to learn a whole lot along the way....

Or, bung it up on -ebay, with a £50 start-price, "Spares or Repairs" cash in what you might from it, and go look for something else.
____________________
My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'

[Fladdem]

Sorry, bike sounds shagged, try an oil change, see what happens, if not look for a stolen recovered sinnis apache or something, nab the engine and then swap.

Also, bit odd, but you do a mean cover of Say It Ain't So.

I'm also a Weezer fan.
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Current:1991 Honda MT50 (Soon to be a H100/MTX/MT5 hybrid), 1976 Honda Cub C70, 2005 Honda Varadero 125, 1993 Yamaha TTR250 Open Enduro , 2010 Road Legal Stomp YX140, 1994 Honda CRM 250 MK III, 1999 Cagiva Mito 125, 1992 Honda CB400 Super Four, Stomp T4 230, 1984 Honda H100s, 2009 Sym XS125K
Past:2003 Aprilia RS125, 1982 Kawasaki GPZ550(FREE BIKE!)
I'm having more fun than a well-oiled midget.

[Rogerborg]

[tomh]

There should be a oil sight glass on the right hand engine cover. It does sound like it's been run on no oil though!

I've worked on a new 2013 Lexmoto XTR-S and that had the OHC Honda copy engine, not the CG engine.

[wr6133]

Don't start it up anymore you will just worsen shit.

I'd get it torn down and see what's been potatoed. A new engine costs about £330 and a used one from a breaking bike could be half that, so if parts to repair cost much more than about £150 I'd just replace the engine (less work).

Brand New 156FMI (you can use any 156FMI brand matters not)
https://www.ebay.co.uk/itm/125cc-Engine-Complete-to-suit-Sukida-Tough-SK125-5B-Brand-New-156FMI-157FMI-/221401010523?pt=UK_Motorcycle_Parts_13&hash=item338c87515b

Trawl eBay and you can probably get a used one from a breaking bike for half the price of the above one

Engine parts for yours

https://www.chinesemotorcyclepartsonline.co.uk/viewcat_3041_KS125-24.php

[Rogerborg]

Hang on, let's figure out what engine is in there, exactly.

[WD Forte]

Sounds serious to me
My initial thought was main bearing wiped
as big ends tend to sound 'sharper' and can be quiet at tickover then
come, in as you rev or put the motor on load.
Just a guess of course, thats all you get on any forum
It will need close examination whatever it is.

My lads 125 made a similar noise and when i whipped the side cover off
I could jack the crank up and down which confirmed the bearing had failed.

Fixable? yes but spendy and time consuming and not for the novice
A known good replacement would probably be your best choice IMO

Its all bit academic now but the damage may have been done by the POs
neglect and oil topped up prior to sale.
Re buying:
Trust no one
Some folk will lie their arses off to flog their old shite
even decent folk can talk utter bollocks without realising it
due to their lack of knowledge.

"Its been serviced" means nothing
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bikers smell of wee

[wr6133]

[tomh]

[WD Forte]

Just noticed you appear to be in Bristol?
If you're not too far from Fishponds I could nip over and have a look,
suck air through my teeth and say helpful things like
"You cant get the parts mate" while consuming your tea and biscuits
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bikers smell of wee

[Rogerborg]

Ah, fair enough...

https://i.ebayimg.com/t/2013-LEXMOTO-XTR-125-23-XTR125-23-XTR125-COMPLETE-ENGINE-GEARBOX-ASSEMBLY-CARB-/00/s/MTIwMFgxNjAw/z/bxcAAOxy2FZSS-NG/$(KGrHqIOKo8FJ!RQneGpBSS-NF1Oc!~~60_12.JPG

... look like...

https://www.pakwheels.com/forums/attachments/bikes-3-wheelers/957762d1244943600-honda-cb-180-1975-honda-cb125s-blue-4025-5_tyu_pakwheels-com-.jpg.

As I understand it[*], the CG OHV pushrod was far more forgiving than the CB OHC for owners who neglected the frequent oil changes and checks.

If I were buying a used Chinese budget bike, owned and "maintained" by a typical Chinese budget bike owner, I know which one I'd prefer.

[*] Cometh the hour, cometh the Tef.
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Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[Meeky123]

Hi there new to this site, I have a lexmoto xtrs 125, I'm also having trouble with my bike, I can start it with the choke pulled down but soon as choke is pulled back up it stalls the bike was running fine before I dropped it on its side yesterday, I was also wondering if anybody knows wat size socket I need to remove the spark plug as the frame seems to be in the way any help would be much appriciated thank you
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Dean meek

[frankcom]

thanks for all of your replies! Assuming I managed to get someone to just replace the engine entirely, would this probably fix my problem? I have been offered an engine from another XTRS and I know a guy who can fit it fairly cheap, so would this be a fix to go for?

Cheers guys!
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Lexmoto XTRS 2011

[frankcom]

[wr6133]