How To Verify Engine is getting fuel? Or How to Pr

Still battling my 1983 KZ750.

I verified that all of the pilot circuits are clear and that when the fuel tank is on and the petcock is set to PRIME that the float bowls fill with fuel.

But how can one verify that the cylinders are getting fuel? Bike won't start. Confirmed spark on all four, fuel in float bowls ... growing pretty frustrated. Spins over like crazy ..

Suggestions welcome. Thanks for this forum.

Check compression and spark.


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Compression tester to arrive early in the week.

I did the usual thing of pulling plugs and rolling the engine over ... could SEE spark so assuming it's working.

Looked at those new pilots jets. They are even smaller than those on a PW50. Came direct from Kawasaki.

chopper1963 wrote: Still battling my 1983 KZ750.

I verified that all of the pilot circuits are clear and that when the fuel tank is on and the petcock is set to PRIME that the float bowls fill with fuel.

But how can one verify that the cylinders are getting fuel? Bike won't start. Confirmed spark on all four, fuel in float bowls ... growing pretty frustrated. Spins over like crazy ..

Suggestions welcome. Thanks for this forum.

If combustion occurs when using starter fluid but not otherwise, fuel might not be entering the carb bore due to an imperfect pilot circuit.

Here are some techniques to help assure fuel mix is getting from the pilot circuit into the carb bore:







Good Fortune!

Are the spark plugs wet, do they smell of gas?
If not, clean carbs as above.

If plugs are wet and sparking, maybe timing is off.
Switch the coil wires (green & black) for the ignition. Swap the green and black wires to the coils, and try to start her.

Thanks.

Compressed air seems to go through all of the pilot passages. Plugs are dry and clean. (replaced with new).

I'm not familiar with the carbs used on your 750, but if the plugs are dry after numerous attempts to start her up, gas is not getting sucked into the combustion chambers.