Question about Yamaha FZR 600 Motorcycles

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Very hard to start 1991 yamaha fzr 600,

Sir, 1991 yamaha fzr 600,very hard to start,first thing,
i have replaced the fuel,fuel filter,spark plugs and leads.
when it finally starts,it runs fine and starts easily,
the problem persists the next day.
thanks and regards.
stew.

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Check the choke to make sure its operating correctly.

Posted on Jul 27, 2009

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Hi, Anonymous and the usual suspects are:
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2. Fuel filter clogged.
3. Fuel line pinched or kinked.
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I have 1992 yamaha fzr 600 was running perfect but now it wont fire


Hi, Anonymous and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
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7. Discharged battery, 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.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
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Jan 05, 2013 | 1991 Yamaha FZR 600

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I have 91 fzr600 will start ok if it is warm but if it is cold i have got to crank it over for ten min. it is like it warms up turning it over after it starts i can turn it off and it will start and run...


Hi, Anonymous and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Discharged battery, 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.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
11. Faulty fuel pump fuse or relay.
11. Security alarm needs a reset.
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.
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Jul 24, 2012 | 1991 Yamaha FZR 600

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Spark plug gets wet won't start Yamaha fzr 600


Hi, Si and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Discharged battery, you need 12.5 volts or better and be able to pass a load test if necessary, 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.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
11. Faulty fuel pump fuse or relay.
11. Security alarm needs a reset.
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.
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May 21, 2012 | 1991 Yamaha FZR 600

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My yamaha genisis fzr 600 wont start now and backfires when i try to start it


Hi, Anonymous and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Severely discharged or damaged battery, you need 12.5 volts or better and be able to pass a load test if necessary.
8. 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.
9. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
10.. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
11. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2, TPS, ETP, IAC,or BAS).
12. Faulty neutral, clutch lever, or kickstand safety switch.
13. Faulty fuel pump fuse or relay.
14. Security alarm needs a reset.
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.
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Mar 24, 2012 | 1995 Yamaha FZR 600

1 Answer

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Hi, Parkinsonden the first thing I would do is take it back to where you had the service done and politely demand satisfaction otherwise 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. 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.
3. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking.
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Intermittent short in the ignition circuit due to damaged wire insulation.
10. Throttle body seals or gaskets leaking.
11. Water, dirt, or rust in the fuel system or filter.
12. Faulty fuel pump or pressure regulator.
13. Fuel tank vent system or lines plugged or kinked.
14. Throttle body controls misadjusted.
15. Damaged throttle body.
16. Incorrect valve timing due to loose, worn or broken timing chain.
17. Weak or broken valve springs.
18. Damaged intake or exhaust valve.
For more information about your issue and valuable "FREE" downloads that you will need please click on the websites below. Good luck and have nice a day.
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May 16, 2011 | 1989 Yamaha FZR 600

1 Answer

CANT GET MY FZR TO FIRE CHECKED EVERY THING THE BOOK SAYS TO DO BUT NO HIT


check for fuel to the carbs, pull plugs and check for spark in the plugs while cranking over. if no fuel check the fuel shutoff, if no spark, check for +12v at the coils and also the c.d.i. box.

Mar 24, 2011 | 1991 Yamaha FZR 600

1 Answer

91 fzr 600, it will spit and sputter and barely go, and then it will clear out and take off like a rocket, and then it will start sputtering again. over and over


how long has the bike sat? it sounds like your haven a fuel problem. i would start with the simple first fuel filter, fuel lines, vac. lines and intake boots. If you have a vac. leak it could cause it run funky. Check your spark and spark plugs, plug wires and boots. if you haven't found the problem yet you should look into your carbs, you could have trash from your fuel filter or gas tank if your lines are old they could have started to brake apart. If your ride has been sitting for awhile you could be facing clogged jets. I don't know how you are with taken things apart and putting it back together with no left over parts, but i will say that the carbs have A LOT of small parts. If you don't have any luck with simple check list and would to take a look into your carbs ill be more then happy to help.
Good like
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Jan 23, 2011 | 1991 Yamaha FZR 600

1 Answer

Just bought 1989 fzr 600 wont start been told battery drains when running.spark is orange,on test help


Hi, Paulheywood3 and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Severely discharged or damaged battery, you need 12.5 volts or better and be able to pass a load test if necessary.
8. 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.
9. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
10.. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
11. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2, TPS, ETP, IAC,or BAS).
12. Faulty neutral, clutch lever, or kickstand safety switch.
13. Faulty fuel pump fuse or relay.
14. Security alarm needs a reset.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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https://www.tradebit.com/filedetail.php/2864660-yamaha-fzr-600-service-repair-manual-pdf
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-fz-owners-manuals

May 29, 2010 | 1989 Yamaha FZR 600

1 Answer

1994 fzr 600 starting problems


Hi, Whiteboyron8 and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Severely discharged or damaged battery, you need 12.5 volts or better and be able to pass a load test if necessary.
8. 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.
9. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
10.. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
11. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2, TPS, ETP, IAC,or BAS).
12. Faulty neutral, clutch lever, or kickstand safety switch.
13. Faulty fuel pump fuse or relay.
14. Security alarm needs a reset.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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FZR Won Start The FZR Forum
https://www.tradebit.com/filedetail.php/2864660-yamaha-fzr-600-service-repair-manual-pdf
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-fz-owners-manuals

Mar 31, 2010 | 1994 Yamaha FZR 600

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