I need to know the firing order for a 87 kawasaki zl 600, how are the plugs numbered when you are sitting on the bike and under the seat there are 2 coil packs how are they numbered with the plugs..

More information please. Which model is the Kawasaki? I'm assuming it's a 2001 year. If it is the 4 cylinder engine the firing order is 1, 2, 4, 3. Sitting on the bike, Cylinder number 1 is positioned to the left most end of the engine.

The ZX6, as with most four-cylinder motorcycle engines, is mounted transversely in the frame. When sitting on the bike, the cylinders are numbered 1-2-3-4 left to right.

Firing Order: the firing order is 1-2-4-3. There is no distributor for the engine, as ignition is controlled electronically.

Extra Ignition Information: there are only two ignition coils for this engine. Each coil has two spark plug wires. One coil fires cylinders 1 and 4. The other fires cylinders 2 and 3

While sitting on the bike thd Left hand Cylinder is #1. Always L to R. Is 1.2.3.4
The firing order is similar the L/H coil powers #1&4 and the R/H does 2&3

The ZX6, as with most four-cylinder motorcycle engines, is mounted transversely in the frame. When sitting on the bike, the cylinders are numbered 1-2-3-4 left to right.

Firing Order: the firing order is 1-2-4-3. There is no distributor for the engine, as ignition is controlled electronically.

Extra Ignition Information: there are only two ignition coils for this engine. Each coil has two spark plug wires. One coil fires cylinders 1 and 4. The other fires cylinders 2 and 3.

Addtional details in this link: images/4/45/ZX600E13.PDF

hope this helps (remember to rating this free answer).

#1 cylinder is on the left side as you sit on the bike. The plugs are numbered in accordance to the HT lead connection.
From left to right the plugs are numbered 1234

Hi and welcome to FixYa,

Initially, your description of "...off and on it shows me it has the power it should..." is significant as it indicates that it would not be a mechanical / engine problem.

Offhand, almost always, erratic performance and/or intermittent power could be: 1) electrical (least likely), 2) air/fuel mix (likely) and/or 3) carb (most likely).

Interesting though if as you posted, the bike has "...new...carbs...". If it were so, then a possibility to consider is that the carbs need synchronization.

Preliminary checks:

• at cold start, determine which cylinders heat up faster / slower using water spray;
• determine the colors of the burns / tips of the sparkplugs at what cylinder;
• loosen the drain screws of each carb and collect the fuel from the drain hose. Compare the quantity and quality amongst all 4 bowls.

Incidentally, is everything stock or aftermarket items installed such as free/open breathers air filters and/or exhaust system?

Good luck and thank you for asking FixYa.

the firing order 1 2 4 3. from left to right as you sit on the bike, the leads are numberd..

I had a similar problem. Mine would continue running, but it felt like it dropped cylinders. Sputtered, backfires...etc. Check your ignitor box (under the seat, attached to the rear fender. Start the bike up to operating temp, and if it does the problem, the tech that fixed mine squeezed the ignitor box, and it returned to normal. Got a new one checking salvage yards online.

Your firing order is most likely to go 1423 with the first cylinder being on the left (shifter) side of the bike. This is what many Kawasaki's used.