Question about 1989 Yamaha FZR 600
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.
FZR Won Start The FZR Forum
My 1993 Yamaha FZR 600 Won Start
OEM parts for Yamaha
Posted on Apr 02, 2016
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Posted on Jan 02, 2017
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
Sounds like your regulator/rectifier is faulty....but it could also indicate an alternator problem. Don't run the bike or it will eventually hurt your battery and/or your alternator (if it hasn't already.)
The wire currents, voltages, etc needs to be checked (from the alternator AND from the rectifier) so I recommend you take the bike to a mechanic unless you have a multimeter and shop manual handy.
I've found Yamaha wiring connections to be slightly weak....and sometimes lead to the premature death of the reg.rectifier. Solution was to 'solder' the connections instead.
Good luck with the FZR.
Posted on Apr 23, 2009
check your fuses first should be one under seat and maybe by head light then battery connection make sure it si tight leave key on the whole time you do these tests then try to jump off the starter with rubber ended screw driver touch positive to a ground then check connections to key switch with test light if u are getting power to the key switch and nothing happens order a new key switch bike will not fire unless switch is making contact with battery good luck let me know how it goes
Posted on Jun 23, 2009
are they oil or gas fouled? if oil and high miles, propbably time for a top end rebuild if fuel then you need to rebuild carbs and get the fuel oil mix correct. I had an old triumph that used to foul the plugs with oil, I crossed the plugs to Bosch brand and only had to change them every once in a while.
Posted on Jul 12, 2009
how long did you let it sit for with gas in the carbs, you may have clogged up your jets. after awile gas will break down and turn into varnish, if your bike trys to push the varnish through the system it will clog the jets. try to take off your seat then remove your plastic over the gas tank. remove the gas tank and you will see four bowls *silver ones right next to where the gas tank is on the carbs*. your bowls are in sets of two. there are drain screws on the bowls to remove the gas inside. remove the 16 screws holding the bowl onto the carb. *4 on each* inside you will see your floats and jets. carefully loosen the jets with a screw driver then finish unscrewing them by hand, they are brass and very soft. you should be able to hold up the jets to the light and see a small pin hole. if not get some carb cleaner and give them a squirt and blow them out. do not try to use anything to clean them out, they are very very sensitive and one knick will change the jet. after that i would spray some carb cleaner up the jet holes and try to clean them out also. if you have a compressor it would be wise to use that to blow out the gunk from the jet holes as well. after you run threw all 8 jets put them back together and see how it goes, if nothing you may have to check the jets again and if clogged again your carbs are gunked up and will need to be cleaned
Posted on Aug 12, 2009
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