Question about 1993 Yamaha FZR 600
Hi, Bobkauf68 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.
93 FZR600 turns over but wont start since regulator packed up The FZR Forum
View topic 94 FZR 600 will not start need HELP
OEM parts for Yamaha
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Posted on Apr 01, 2016
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Posted on Jan 02, 2017
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.
Posted on Apr 20, 2009
Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? (not all bikes have a water trap bowl). Install an in-line fuel filter. Use premium gas. You will need to clean the built up varnish from the evaporated gas out of the carbs.
FOR EACH CARB > Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine.
I strongly suggest you to let the shop take care of the carbs. Cleaning can be a nightmare times four and doing the balancing and sync of the carbs sounds easier than it is. If you do the carb work yourself, then be sure you have a fire extinguisher at hand. I am serious about that.
Please rate this solution. Thanks!
Posted on Apr 23, 2009
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