Question about 2007 Yamaha XT 660 X

1 Answer

Start problems my bike was fine till i wnt on it last night it started ok then cut out and so on 4 about 2 min and if i rev it it cutts out but ive just add a go and it fine now ple can you help me its 2005 and and ive done 9000 mile on it from new and i t looks like new and only bin in the rain a hand full of times thank you

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  • jay dart Feb 23, 2012

    sorry its a yamaha xt 660 ;0)

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  • Yamaha Master
  • 41,919 Answers

Hi, Jay and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a "LOAD" test if necessary, your battery may show 12.5 volts but have little or zero amps and needs to be replaced.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, stator, magneto, points/condenser ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Air/fuel mixture screw improperly adjusted.
10. Accelerator pump damaged or not working.
11. Water or dirt in the fuel system, carburetor or filter.
12. Restricted, blocked or kinked fuel line.
13. Fuel tank empty.
14. Fuel tank contaminated with ethanol sludge.
15. The gas cap is not venting properly or fuel tank venting system blocked.
16. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
17. Needle and seat stuck closed in the float bowl.
For more information about your issue and valuable "FREE" downloads that you need please click on the blue links below. Good luck and have a wonderful day.
XT660R dangerously cutting out XT660 com The 1 XT660 Resource
XTZ 660 Cutting out when warm Horizons Unlimited The HUBB
YAMAHA XT660R Service Manual
OEM parts for Yamaha
Yamaha XT660R Owner Manual

Posted on May 04, 2017

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tellme2
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SOURCE: pw50 problems stating bike

hey there matey,, just to run a few things with,, have u taken the spark plug out and cleaned it up,,try a new plug 1st,, to be sure, or if u have a new plug,, take out the spark plug place it back in its cap and rest it on the cylinder head and either elec start it or kick it over and make sure u have a spark ,, if all is ok on the above,, then turn to fuel and carburetta, make sure fuel is gettin to the carb 1st,, but u say u do eventually gettin it goin ,,then theres a blockage in jets ,,undu the bottom of the carb clean out the bowl, ,in the carb u will see a brass jet, un screw that and the needle guide that the jets screwed in to and using a pin or needle,poke the small hole clean so u can see light threw them,, bung it all back together and pray,, if no joy il get back to ,, ok m8, enjoy

Posted on Jan 10, 2009

ollie reece
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SOURCE: engine is cutting out below 5000rpm and missfiring

hi mate change the airfilter black smoke is a sign of a dirty air filter

Posted on Jul 08, 2009

ollie reece
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SOURCE: 2005 YZ 250 bike has no power in the powerband motor starts

HI MATE ON THE CARB THERE 2 SCREW ONE FOR IDLE AND ONE FOR MIXTURE THE MIXTURE SCREW WILL BE THE SMALLEST UNSCREW A 1/4 OF TURNS ALSO TRY CHANGING THE PLUG OK

Posted on Aug 25, 2009

herbmeister
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SOURCE: Engine cutting out when open throttle. YAMAHA NEOS 50cc MOPED

i had a simuler problem with my honda cr 250 moto-x bike it would start fine and you could keep it ticking over with the throttle(i have deliberatly unscrewed the tickover in case i come off,it will cut out) when i got on it,it would go for about 400-500 metres then splutter and die and not start again for around 5 mins. i immediatly knew it was a fueling problem. so after stripping the carb and giving it a good clean out i was baffled when i got back on and it still done the same. i then dismantled the fuel tap cleaned it all out and put it back together and tested it,it was very very slow so i unsrewed my fuel cap a little and was greated with the familur gush it should deliver. problem solved! the vent in my fuel cap had crystalised up,so the fuel was coming out but the air was not getting in,causing a vacuum and slowing down the flow and basically emptying the carb quicker than it can fill back up!!! clean your carb,fuel tap and any vents in your cap or tank. if this does not work then your bike must be over fueling or low on compression.

Posted on Sep 18, 2009

c01d_speed_d
  • 1 Answer

SOURCE: I have a '99 FZS Fazer 600, and it won't start.

i had same problem turned out to be electrical issue check all your wiring connections under the seat and under your fuel tank and if there all fine try checking that your fuel pump motor is running mine wasnt because of damp on my wiring connectors. when you turn on the ignition the bike should click a few times and your fuel pump should come on look under your tank looks like this with 2 tubes running from your fuel tank http://cgi.ebay.co.uk/yamaha-fzs-600-fazer-00-fuel-pump_W0QQitemZ250559832283QQcmdZViewItem?rvr_id=&rvr_id=&cguid=6d2769071260a0e2048322d3fffcee00
this needs to be running or you will be riding the bike on gravity fed fuel and as soon as you open the bike up you will not get enough to the engine and will cut out hope this helps

Posted on Jan 27, 2010

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