Turning over not firing

[Pazif]

Hello

​​​​​​I have a 2002 CBR600

This morning I got my bike out for work and it wouldn't start. The day before started fine and rid fine.

It is turning over fine but it won't fire at all.

I tyred bumping with same result, turns over but not fire.

Kill switch isn't up, side stand up, sitting in neutral.

Bike primes as normal when I turn it on. Fuel can be smelled from exhaust. Fuses are fine.

Any other ideas please?

Thank you.

[megawatt]

Check for sparks, then check ignition circuit.

[leener]

Assuming that you want to DIY - Time to get the toolkit out.

Could be coils, leads, or plugs...

One thing I did with my ZZR:

Tank off, spark plugs out (all of 'em).

Put one plug back in a lead, ground it to the frame, and try to turn it over. Do you see a spark?

Repeat for each plug and lead.

Another thing I would do is use a multimeter to test the resistance through each lead to the coil. It's quite easy to diagnose a dodgy coil, but I wouldn't do this until I knew each plug was fine.

This would be my first series of checks.

[barker]

AINT GOT YOUR BIKE SO CANT TELL YOU WHAT WIRE BUT SOUNDS AS IF A WIRE HAS PARTED COMPANY ,MAY BE A CORODED CONNECTION OR BROKEN WIRE , OTHER WISE WHY WORK ONE DAY AND NOT NEXT

[Pazif]

Thanks everyone, after work I'll be take it apart and cheating plugs and connections. I will reply with the results.

[Grumpy Old Git]

Could be a 'stuck' side-stand switch?

[Pazif]

Hey all

I have striped my bike and cheaked the plugs.

There not sparking at all. I assumed as much from the start as I could smell fuel from the exhaust.

My bike is injection and I'm more comfortable with older bikes. First thing I looked for was the coils but I can't find any, jist a wire from the plug leads disappearing in to the lum.

Any sujestions would be appreciated.

Thanks

[Pazif]

I have cheaked the side stand switch and the bank sensor. Fuel pump primes and works.

I'm guess it's somewhere along the ignition line.

Will have another look tomorrow.

[Tango]

Your plug caps are coil packs....so there's no separate coils. When you say you checked the sidestand switch, how did you check it? With a meter? If all this is ok, then the problem could be the ECU or the crank sensor......This is all assuming that you've not got an immobiliser fitted to the bike?.....

[megawatt]

If there are no sparks on any plugs, look at a common supply. Either to the crank sensors or to the coils packs. Could just be a bad earth.

[Pazif]

Thanks for your replies.

I cheaked the side stand switch by lowering and lifting the stand and turning the bike over,i put the bike in gear with stand down and as it should it wouldn't turn over until I palled the stand up and pall edge the clutch in.

I cheaked the bank sensor by unplugging it and the bike would prime, to test if the sensor was faulty I bypassed the sensor and got the bike to prime like normal without the sensor plugged in.

My next thing to look at is the crank sensor as sujested and I've seen that some have had a problem with the security system not put a very pacific 9v to the Ecu.

Thanks everyone, still searching for the issue.

Anymore sujestions are greatly appreciated and I will post with or with out success.

Thank you.