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My tzr 125 runs fine till it rains then it runs for a bit then cuts out and will not start again and ideas??

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Probably air filter getting wet which restricts the airflow. Make sure you have a new air filter thats not already clogged. Add the rain to a bad filter and it will starve it for air. If not that, check all hot wires for cracks in the insulation which could get wet and short the bike out while youre riding.

Posted on Mar 31, 2014


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Posted on Jan 02, 2017

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SOURCE: tzr 125 1989/clutch ok.but when you start the bike

most bikes have a neutral switch, which lights up neutral light on dash, or even to allow bike to turn over need to find it on the bike and check it, it may be shorting, or loose.

Posted on Sep 05, 2009

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SOURCE: my jinlun jl50qt4 cuts out

is it fuel injected if not try to adjust your air screw it will be brass flat head screw on out side of carbs

Posted on Jun 23, 2009

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SOURCE: with a new fresh plug the bike (yz 125) will start

sounds right. i got a ktm that was doin the same thing. took the carb off cleaned it. then adjusted the screws to factory settings and it was good to go. kicks on the first try.

Posted on Mar 15, 2010

  • 1978 Answers

SOURCE: i have a 1991 tzr

Dirty contacts in the ignition switch contact base. You may not be able to disassemble and clean your switch but you can check the wires for continuity. Your handle bar kill switch can also be be a source of intermittent spark.

Posted on Sep 23, 2010

  • 39 Answers

SOURCE: yamaha tzr 50cc cuts out when warm

overheating ? too much air compaired to fuel ?

need more info for those 5 minuits how does it run

Posted on Oct 30, 2012

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Honda sabre

I have an 04 Honda Sabre 1100 that does the same thing. If the rain is steady, it will actually die. After you come to a stop, it will start right away and run ok for a little while until you get up to speed in the rain and will die again. Very frustrating. Can't see any shorting when viewing in dark conditions. Bike shop also couldn't figure anything out. Any ideas?
If I figure anything out, I'll repost what worked for me.

Aug 08, 2014 | 2001 Honda VT 1100 C2 Shadow Sabre

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Bike cutting out

make sure coils are not cracked.

Apr 08, 2014 | 2007 Honda VT125C Shadow

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Hi folks, Was caught out in very heavy rain with my CG 125 and after 15 mins the bike started to backfire and a few minutes later cut out completely, after standing still for a little while it started...

you have water in your electrical system ..the coils on cg are well known fro small cracks ..get a new one fit it should be ok /.....also spray wd40 on all electricals every couple of weeks especially under the tank

Aug 06, 2013 | 2000 Honda CG 125 Cargo

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Ybr 125 Cutting out in the rain or wet roads

check if water getting to ht caps. ht leads, coils, cdi unit,

Mar 08, 2013 | Motorcycles

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Cuts out and splutters will start agai after a few minutes then will do it again

yeah had the same once on a tzr 125 4dl would ride for a short time fine then splutter and die after a couple of mins would start fine and do the same again .. it was the breather on the fuel cap . if blocked causes a vacume stopping fuel from flowing . once cleaned was all fine

Jun 03, 2012 | Honda NSR 125 Motorcycles

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Yamaha TZR 125 cuts out

Hi, Aronthomson and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float cracked, leaky or damaged.
7. Float bowl contaminated old fuel, water, dirt, rust, etc.
8. Float bowl vent or overflow tube clogged.
9. Fuel flow to carburetor restricted.
10. Intake manifold leak.
11. The gas cap is not venting properly or fuel tank venting system blocked.
12. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
13. Needle and seat stuck closed in the float bowl.
14. Multi carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
YZF R125 Cuts out
TZR 125 running problem free
Yamaha TZR125 1987 1993 Workshop Repair Service Manual PDF Download... $15

Btw, I’m available to help over the phone in case u need at

Nov 01, 2017 | Yamaha TZR 250 Motorcycles

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I have a 1991 tzr 125 rk2 it wont start changed coil ,new battery,new ht lead and cap, checked pulsar coil just bought it and cant think of anything else getting a weak occasional spark but wont fire also...

Dirty contacts in the ignition switch contact base. You may not be able to disassemble and clean your switch but you can check the wires for continuity. Your handle bar kill switch can also be be a source of intermittent spark.

Sep 23, 2010 | 1990 Yamaha TZR 250

1 Answer

Iv just bought a tzr 125 belgarda its smokes like hell and will not rev up.. someone said it may be leaking gearbox oil into the piston some how?? i changed the plug.. and turned the power valve to open...

There are two places where gearbox oil can leak into the combustion process: from the gasket between the two engine case halves, or from the crank seal on the right hand end of the crankshaft. The most likely culprit is the crankshaft seal.

Nov 15, 2009 | 1987 Yamaha TZR 250

1 Answer

Bike wont run for more than 5 secs and thats when it does start

Not sure but it sounds like it's running too rich a mixture and/or your float levels are not adjusted properly. When you stopped the excess fuel has gone into the bore not burned which will wet your spark plug making it very difficult to start. Depending on the colour of the smoke it could also indicate that your mixture is too rich. For extra power you need more air not necessarily more fuel. I hope that helps you. Again not sure but sounds like that is your problem. :)

Sep 27, 2009 | 1988 Yamaha TZR 250

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