Question about 1988 Yamaha FZR 1000

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88 fzr 250 sputtering in low rpm, have had new inlet manifolds installed, had the carb sinx, new oil and fillter, new fuel fillter, new air fillter, all done by macanic. dose not like taking off from stand still starts unless you rev at high rpm and feather clucth, even then when it gets moving it sputters till about 6000 rpm, fine after that

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  • Yamaha Master
  • 40,748 Answers

Hi, Mattpollack and the usual suspects are:
1. Throttle cables misaligned or misrouted.
2. Damaged or restricted fuel tank venting system.
3. Inlet system air leak.
4. Vacuum piston malfunction.
5. Accelerator pump leaking or no output.
6. Plugged bowl vent.
7. Fuel level in bowl too low.
8. Restricted fuel supply passages.
9. Plugged jets or passages.
10. Worn or damaged needle or needle jet.
12. The enricher valve not seated or leaking.
For more information about your issue and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
missing sputtering under low rpm acceleration
Fazer problem acceleration
https://www.tradebit.com/filedetail.php/243740163-1989-1995-yamaha-fzr-1000-genesis-exup-fzr1000
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-fz-owners-manuals

Posted on Mar 15, 2016

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 729 Answers

SOURCE: 2003 YZ250 engine coughs and sputters at high RPM

fuel carburetor problem! it causes most of the spluttering problems i have encountered with mine so far!
it could have blockage and insufficient gas enters on it during high revs!

Posted on Jun 18, 2009

mxoutlaw
  • 14 Answers

SOURCE: ttr 230 high RPM's looses power sputters / new

lOSE OFF POWER ON TOP END,IS A GOOD INDICATION OF NOT ENOUGH FUEL..TRY AQ BIGGER MAIN JET

Posted on Jul 25, 2009

  • 6 Answers

SOURCE: Yamaha TW 200 cuts out at high rpm

I have a tw200 and when I have this problem its from the cam chain slipping back a notch when I unload it from my truck. I leave it in gear so when I let off the cluch it acts as a brake. I ride by my self so thats why I load it that way. I am guessing you load and unload your tw the same way. So remove the timing cover and make sure you are tdc on both the upper and lower timing marks. The bike will run if the timming is off a bit. It's really easy to set the timing on these bikes. It's easier to look for how to on the xt 200 if you need more help.

Posted on Jan 07, 2010

mxtras
  • 194 Answers

SOURCE: have a yz 125 2001 help coughs and sputters mid range reves

Have you checked the condition of your reeds? This sounds like a good place to start troubleshooting.

Posted on Apr 09, 2010

  • 130 Answers

SOURCE: my 89 fzr 600 starts to sputter and jerks when i

Sound like the slow jets/idle circuits on the carb are restricted or misadjusted.

Posted on Jun 21, 2010

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1 Answer

Why does my bike misfire at low revs itsok above 3000rpm ive cleaned out the carbs and the jets are all clean


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94 yamaha fzr 1000 was running fine, went to start it an it would start run on choke but cut out as soon as the choke was closed, definetly getting petrol as far as the carbs an getting spark, wud the...


Hi, Anonymous and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Float needle and seat sticking.
5. Float level too low.
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8. Air/fuel mixture ***** set too lean.
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My 2003 suzuki 250 ozark sputters at full throttle


Is engine condition good???? comperssion should be in the range of 150 psi. have you checked tha air box, filter, inlet track for proper condition and no blockage(dirt dobber nest???). Check for air leaks at the intake manifold by spraying arouind the area with carb cleaner while idling, any change in rpm indicates a leak. Re check your work in the carb. A "cleaned carb " and a properil overhauled and adjusted carb can be 2 different things.

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Hi, Johnny and the usual suspects are:
1. Inlet system air leak.
2. Enrichener valve not seated or leaking.
3. Damaged or restricted fuel tank vent system.
4. Restricted fuel supply tract.
5. Dirty or damaged air cleaner element.
6. Plugged bowl vent or overflow.
7. Worn or damaged needle or needle jet.
8. Vacuum piston assembly malfunction.
9. Loose or plugged main jets or passages.
10. Improper float level.
11. Accelerator pumps inoperative.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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Dec 17, 2012 | 2003 Yamaha YZ 250

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Fzr 250 2kr starts to die round 9500rpm, is it because of pod filters?


This is posted in the wrong product category. Please re-post.

Jun 01, 2012 | 1988 Yamaha FZR 250

1 Answer

My bike wont go over 60/70mph ive tried everything


Hi, Gregconlon and the usual suspects are:
1. Inlet system air leak.
2. Enrichener valve not seated or leaking.
3. Damaged or restricted fuel tank vent system.
4. Restricted fuel supply tract.
5. Dirty or damaged air cleaner element.
6. Plugged bowl vent or overflow.
7. Worn or damaged needle or needle jet.
8. Vacuum piston assembly malfunction.
9. Loose or plugged main jets or passages.
10. Improper float level.
11. Accelerator pumps inoperative.
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.
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https://tisuckpullho.files.wordpress.com/2015/11/manual-fzr-250-exup.pdf
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2 Answers

Bike is sputtering when give it gas. sat for 2


Make sure battery is full,not just charged. if the sputter is still there you may need to clean air filter,fuel fillter or carbs may need to have trash removed from inside at the fuel float valve-seat and jet.

Apr 29, 2010 | 2004 Honda VTX 1300

1 Answer

Too much oil in engine


The cutting out is just a coincidence. Go with the correct amount of oil. The piston is splash lubricated. Too much oil kills the splash and the cylinder gets poor lubrication. If your model has a carb, ( as opposed to fuel injection ), then clean the carb and air filter then put in a new stock NGK spark plug. This should take care of the problem.

Please rate this solution. Thanks niknak!

Apr 04, 2009 | 1988 Yamaha FZR 250

1 Answer

My FZR 600 is acting up and backfires


I have had several bikes in my time. and keeping the carbs syncranized is very important. Did you put aftermarket pipes on it? try rejeting the carbs up 2+mm that may help the fuel air ratio?

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