Question about 1984 Yamaha FJ 1100

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Hi! My Yamaha FJ 1100 just sudenly had no spark on the left cylinders and then all off a sudden the left side sparked but the right side was dead, now the bike has no spark and the dashboard lights is burning the whole time, no matter if the ignition is on or off, and the park light is also burning permanently if connecting its wires, what can cause this? we have already checked for shorts on the wiring! thanks

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If you have a manual look up ignition coil solenoids. My FJ1100 had the same problem. Take off the small cover on the Left side that has Yamaha engraved on it. After taking it off you will see a metal T that spins around. This metal T passes 2 solenoids. Looking straight at the ignition coil, the left solenoid sends spark to the left side (cylinders 1,3 I think), and the right solenoid sends spark to cylinders 2,4 I think. If you look closely at the metal T when turning the bike over you'll see it passes each of the solenoids pretty much coming in contact with them as it turns. Your problem is that the metal T isn't connecting with the solenoids. Either get new solenoids or whole ignition coil, shouldn't be more than 50 bucks. Then read your manual on how to set the ignition timing. Hope this helps

Posted on Jul 29, 2010

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My 84' Yamaha fj1100 has fuel, spark, and the battery is new. It won't start. Will turn over just fine but not actually start up and run. Help please


Hi, Kennie great talking to you last night this is just for points it's the same stuff that I sent you, and the usual suspects are:
1. Fuel tank empty.
2. The fuel tank has old dead gas.
3. Fuel tank bottom contaminated with ethanol sludge, dirt, water, rust, etc.
4. Fuel supply valve/petcock turned off.
5. Fouled spark plugs.
6. Engine flooded as a result of overuse of the enrichner.
7. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
8. Fuel valve/petcock or filter clogged.
9. Fuel line to carburetor or throttle body pinched, kinked or blocked.
10. Carburetor float stuck.
11. Fuel injectors clogged.
12. Fuel injectors stuck open.
13. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a cursory reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead acid batteries.
14. 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.
15. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
16. Spark plug cables in bad condition and shorting check for spark leakage in the dark, cable connections loose, or connected to the wrong cylinders.
17. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
18. Faulty neutral, clutch lever, or kickstand safety switch.
19. Faulty fuel pump or fuse or relay.
20. A stuck bent or burnt valve.
21. Tilt sensor needs a reset.
22. Security system not disarming alarm needs a reset.
23. Check for engine trouble codes.
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.
Yamaha Fault Codes
What to do When Your Motorcycle Won Start
DOWNLOAD Fj1100 1984 $10 cheap
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-fj-owners-manuals

Jul 07, 2017 | 1984 Yamaha FJ 1100

1 Answer

I have a 84 yamaha fj 1100 it has compreshion and gas and spark but wont start


Hi, Dakota 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. Security alarm needs a reset.
For more information about your issue and free downloads that you will need please visit the websites below. Good luck and have a nice day.
my 1984 fj wont start when hot
http://meiguohosting.com/How-to-fix-start-problem-for-your-1984-Yamaha-FJ1100
https://www.tradebit.com/filesharing.php/search/0/yamaha+fj1100

Jan 22, 2016 | Yamaha Motorcycles

2 Answers

Where are the spark plugs located on the bike ? are they under the seat ?


on the cylinders or in the heads on the out side of the engine ethier the right or left side.

Sep 10, 2014 | 2001 Yamaha V Star 1100 Classic

1 Answer

1989 Yamaha fj1200 will not start


Hi, Passin77 and the usual suspects are:
1. Fuel tank empty.
2. The fuel tank has old dead gas.
3. Fuel tank bottom contaminated with ethanol sludge, dirt, water, rust, etc.
4. Fuel supply valve/petcock turned off.
5. Fouled spark plugs.
6. Engine flooded as a result of overuse of the enrichner.
7. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
8. Fuel valve/petcock or filter clogged.
9. Fuel line to carburetor or throttle body pinched, kinked or blocked.
10. Carburetor float stuck.
11. Fuel injectors clogged.
12. Fuel injectors stuck open.
13. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a cursory reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead acid batteries.
14. 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.
15. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
16. Spark plug cables in bad condition and shorting check for spark leakage in the dark, cable connections loose, or connected to the wrong cylinders.
17. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
18. Faulty neutral, clutch lever, or kickstand safety switch.
19. Faulty fuel pump or fuse or relay.
20. A stuck bent or burnt valve.
21. Tilt sensor needs a reset.
22. Security system not disarming alarm needs a reset.
23. Check for engine trouble codes.
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.
FJ 1200 STARTING PROBLEMS
What to do When Your Motorcycle Won Start
Yamaha FJ1200 1984 1993 Workshop Service Repair Manual Download Manuals... $10
http://mybikemanuals.com/yamaha/yamaha-fj-owners-manuals

Jun 02, 2011 | 1986 Yamaha FJ 1100

1 Answer

Just bought one pivately and it wont start, also can't find where the spark plugs go


on the rear cylinder at the top on the right side of bike as you are sitting on it, there is a chrome cover that is in place by rubber gromlets pull that cover and there will be the spark plug. The fromt cylinder has same cover but on the left side of bike. Check the plugs and probably replace them and see if bike will start you can also check for spark there by placing the plug in the wire and putting it against the cylinder and turning over the motor watching the plug to see if there is spark in each cylinder. I hope this helps you.

Oct 29, 2010 | 2003 Yamaha V Star 1100 Classic

2 Answers

I have an FJ 1100. the bike will start, but as soon as it gets warm (3-5 minutes) it starts to run rough (3-cylinders) then it dies and wont start again until completely cold.


When's the last time the carbs were removed and thoroughly cleaned? Has the bike ever sat for any long period of time in storage?

Chances are, there is varnish buildup in the carb passages, and/or the float level needs to be reset.

Aug 10, 2010 | 1985 Yamaha FJ 1100

1 Answer

Spark plug order


If you are sitting on the bike, cylinder 1 is on your left then 2,3,4....looking at the coils, the left coil- left lead goes to no1cylinder. right lead goes to cylinder4. Right coil- left lead to cylinder 2, right lead to cylinder 3.
Hope it helps you.

Apr 03, 2009 | 1986 Yamaha FZ 600

1 Answer

1985 fj1100 yamaha sometimes cutoffs during riding


This happens if u have not cleaned ur spark plug . pull out the spark plug .Clean it thoroughly with small amount of petrol...... Even then if the problem persists change the oil and ride ....

Mar 05, 2009 | 1985 Yamaha FJ 1100

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