Question about 1994 Yamaha FZR 600

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1994 yamaha fzr 600. the bike starts fine and runs ok but while riding the bike doesnt take full throttle just bogges out and wont pick up speed

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Hi, Jay32769 tuning your carburetor is fairly simple once you understand the basic principals. You engine is a simple airbox sucking air in and blowing it out, it is finely tuned at the factory for maximum performance once you upset that delicate balance by changing air filters, camshafts or exhaust systems your performance may go down the and the engine may run poorly, you need to compensate the air-fuel mixture in the carburetor in order for the engine to run smoothly and at peak performance. If you are running multi carburetors you need to sync them first and make sure your air cleaner element is clean and dry. Here is how and where you compensate trouble:
1. Your air/fuel mixture ***** manages your idle.
2.. Your slow speed jet manages 0-1/4 throttle opening.
3. Your jet needle c-clip position manages 1/4-3/4 throttle opening.
4. Your main jet manages 3/4-wide open throttle.
If you are running lean, spark plug electrode color is white, engine runs hot and feels like it is starving for fuel you need to go up on the jet size or move the c-clip down one notch. If you are running rich, spark plug color is black or dark gray, engine runs cool, and bogs down when accelerating you need to go down on jet size or move the c-clip up one notch. When your carburetor is properly tuned for maximum performance your spark plug electrode will be a light tan color like coffee with cream. If you prefer fuel economy over performance you can go down on main jet sizes until a satisfactory level of lower performance is acceptable versus MPH, your spark plug color will be whiter and your engine will run warmer. These tuning adjustments will only make improvements if your intake and exhaust system have no air leaks or sealing issues and the entire electrical system is in proper working order and you have no mechanical issues. For more information about your issue, please click on the websites below. Good luck and have nice a day.
How to Diagnose Motorcycle Carburetor Problems
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Posted on Apr 01, 2016


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Posted on Jan 02, 2017

  • 28 Answers

SOURCE: 1994 Yamaha fzr 600 speedometer not working.

speed odometer cable needs to be replaced

Posted on Dec 28, 2008

  • 3 Answers

SOURCE: 1994 yamaha fzr 600 spark plugs foul after about

Really...strange what you need to do is see if the bike is running too fat. So...warm her up witha fresh set of NGK! spark plugs. After the bike is warm take it down the street and back. When your on the way back get on the throttle and accelerate then shut er down and coast it into the garage. This will give an acuurate read on the spark plugs at operating temperature and under a load. Pull all the plugs. If they are brown like coffee with cream that means carbs are adjusted correctly. If they are black and wet too rich and if they are white or very light brown too lean. Other problems may be oil soaked plugs from loose top end parts. Maybe valves or guides.

Posted on Mar 05, 2009

  • 1 Answer

SOURCE: 1994 yamaha fzr 600 new battery, won't charge

this sounds like a stator problem. try checking the wiring inside and to the battery and if that is not it you most likely need to replace the stator.

Posted on Jun 14, 2009

  • 27 Answers

SOURCE: very hard to start 1991 yamaha fzr 600,

Check the choke to make sure its operating correctly.

Posted on Jul 27, 2009

  • 22 Answers

SOURCE: 1994 yamaha fzr 600.

i had a similar problem on my 1998 honda superhawk. I was down in Daytona Beach, Florida, and it was really hot and my battery went dead. It turned out that the heat of being down there along with the frequent short trips and idling we were doing down there fried my regulator/rectifier. It actually melted it was so hot. I bought a new regulator rectifier from a guy online who was really cool about it. Rick's Motorsports Electrics was the name of his store.

I looked up the part for you. check it out:

Posted on Aug 19, 2009

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1 Answer

Bike bogs and back fired when i gear. not in nuteral though

Hi, Put new sparkplugs in and then see how it runs. My guess is that you have a bad plug(s). Good luck.

Aug 19, 2012 | 1994 Yamaha FZR 1000

1 Answer

On my 89 yamaha fzr 600 it starts up good and runs but after i run it for about 15 mins then it loses power then dies i wonder what the problem is i put new spark plugs new ignition coils and new battery...

Hi, Terry_hill27 the following applies to carbureted also fuel injected models 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.
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, 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 ***** improperly adjusted.
10. Water or dirt in the fuel system, carburetor or filter.
11. Restricted, blocked or kinked fuel line.
12. Fuel tank empty.
13. Gas cap is not venting properly or fuel tank venting system blocked.
14. A failed fuel pump, pressure regulator and or fuel injectors.
15. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
16. Needle and seat stuck closed in the float bowl.
For more information about your issue and valuable "FREE" downloads that you need please visit the websites below. Good luck and have a nice day.
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Sep 20, 2011 | 1994 Yamaha FZR 600

1 Answer

I have a 1990 yamaha fzr 600 that doesn't idle good when its cold and if its sits and I try to take off on a hill it cuts out like its not getting enough fuel but after its running it will go up hill...

Hi, Kevin_wri799 and the usual suspects are:
1. Idle speed improperly adjusted.
2. Inlet system air leak.
3. Leaking accelerator pump.
4. Loose low-speed jet.
5. Plugged low-speed jet.
6. Contaminated or plugged low-speed circuit.
7. Enrichner valve/choke not seated or leaking.
For more information about your issue and valuable "FREE" downloads that you will need please click on the websites below. Good luck and have a nice day.
1994 fzr idle problems The FZR Forum
YZF600R Idle Problem Rev Problem
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May 24, 2011 | 1990 Yamaha FZR 600

1 Answer

1992 yamaha fzr 600 genesis just went dead a day after riding. put new battery in and it worked for acouple days but wont hold a charge. its now dead again.

use a vom/ meter on current setting put in circuit ..take hot off battery attach one lead to bat + the other lead to heavy cable u just disconnected. but 1st charge bat to full. see current draw. start to pull one fuse at a time till current drops. that circuit is the culprit. then youll need to find out why is drawing w/ bike off. wire chafed ? minor short.. or when running meter on battery 14.5 volts not running 12.5 volts if the vovtages don't go up when running regulator or altinator is bad or bat wire .. get the manual.. a big help...

Mar 27, 2011 | 1992 Yamaha FZR 600

2 Answers

91 FZR 600 Transmission knock!

the knocking could be the universal joint bearings calapsing in the drive shaft

Jun 08, 2010 | 1991 Yamaha FZR 600

1 Answer

Hi, i'v got a yamaha fzr 600 3he, 89, it seems to be running rich, i'v adjusted the needles to the leanist setting but still no joy, it bogs wen pulling away so i have to rev it fairly hard, it will pick...

carefully check plug leads and caps for cracks and shorting, there can be a small resister in the cap that can burn out, check by unscrewing the small brass clip that clips it to the spark plug inside the cap

Apr 04, 2010 | 1995 Yamaha FZR 600

2 Answers

Hey my 1994 fzr 600 has trouble starting. it will run fine but in order to start it you have to hook it up to a vehicle and spray starting fluid in it. and sometimes it doesnt even start after that.

I had one of them. Theyre a nice handling quick little bike. They also had issues with the control modules. You may not be getting enough spark.

Mar 31, 2010 | 1994 Yamaha FZR 600

1 Answer

2006 yamaha wont stay running unless my finger is on the start button

does the bike run if you throttle it budy on start up

Sep 28, 2009 | 1995 Yamaha FZR 600

1 Answer

Bike won't start 92 yamaha fzr 600

Sounds like the plugs are fouled out, I would pull them and make sure they're about the color of a paper bag. If they're all sooty and wet you most likely have a rich condition. I would take the carbs out and clean everything and pop in a new set of plugs. I have a 87 Fz600 that was acting up until I cleaned the carbs.

Apr 20, 2009 | 1994 Yamaha FZR 600

3 Answers

1994 Yamaha fzr 600 speedometer not working.

speed odometer cable needs to be replaced

Dec 27, 2008 | 1994 Yamaha FZR 600

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