Question about 1998 Yamaha YZF Thunder ace 1000 R

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Yamaha YZF Thunderace 1000 no top end

Yamaha YZF Thunderace 1000cc - When I accelerate, full throttle, the revs are hanging at about 5000 to 6000 revs and doesn't want to pull anymore. Fitted new fuel pump, bridged wires from fuel pump to battery. Still the same problem. Could u plse asssist.

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  • Yamaha Master
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Hi, Annita319 and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition and leaking check for spark leakage in the dark.
3. Spark plug gap too close or too wide.
4. Faulty ignition coil, module, and or sensor.
5. Battery nearly discharged.
6. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
7. Intermittent short circuit due to damaged wire insulation.
8. Dirty air filter
9. Intake air leak.
10. Water, dirt, or rust in the fuel system, fuel pump and/or filter.
11. Old dead or bad fuel.
12. Faulty fuel pressure regulator
13. Pinholes in the in tank plastic convoluted tubing from the pressure regulator to the quick disconnect check valve.
14. Fuel tank vent system plugged.
15. Throttle body controls misadjusted.
16. Damaged throttle body or intake seals.
17. Clogged or faulty fuel injectors.
18. Loose, dirty, or corroded ignition module connector at crankcase.
19. Faulty TPS, MAP, CKP, O2, and/or CMP sensors.
20. Incorrect valve timing.
21. Weak or broken valve springs.
22. Damaged intake or exhaust valve.
23. The control module may be in limp mode.
24. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Won rev past 6k rpm under load
http://www.r1-forum.com/forums/4-mechanical-help/80115-4500-5000-rpm-sputter.html
Yamaha YZF1000RJ Service Manual
OEM parts for Yamaha
YAMAHA YZF1000R Owner Manual

Posted on May 22, 2017

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 132 Answers

SOURCE: Thunderace rear brake

undo the bolt that clamps the leaver on pull the leaver off and replace at a position what suits you best and re fit bolt.

Posted on May 25, 2009

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SOURCE: yamaha yzf r125 fitin problem for bos exhaust

pipe should be flush

Posted on Jun 19, 2009

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SOURCE: 97 yamaha thunderace fork oil capacity

270mls per leg, or 280 if you want a little stiffer ride

Posted on Jun 19, 2009

Benimur
  • 6966 Answers

SOURCE: Wire sematic for yamaha 1000cc engine mid 90's

Hi and welcome to FixYa,

Your query was posted under "1998 Yamaha YZF-R1". Wiring diagram is here.

Should you be referring to another model, please postback with the exact year/model.

Good luck and thank you for asking FixYa.

Posted on Dec 05, 2009

  • 1 Answer

SOURCE: 1997 Yamaha YZF Thunderace uses 1/2 quart of oil every 200 miles

Replace standard rings with GTS1000 rings . I had Fzr1000 with same problem , at 187000 kms I pulled the barrels off and found no hone left , it was a smooth bore . Also replaced valve guide seals at this time also . Oil consumption dropped from 1 litre per 1000kms to 1 litre per 8000kms. Bike has now done 308000kms and still uses oil at the rate of 1 litre per 4000kms .

Posted on Jan 19, 2010

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