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Carb problem or ?
- 1982KZ1100D1
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Post edited by: 1982KZ1100D1, at: 2007/11/25 15:35
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- wiredgeorge
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I suspect you have an ignition issue or perhaps compression issue.
If you see nothing on the vacuum gauges for a cylinder, the cylinder isn't firing. Help me out with some info and I can walk you through the steps needed to fix the problem. Fix your sig... thanks wg
wiredgeorge Motorcycle Carburetors
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- steell
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Number four throttle may be sticking and causing the zero reading, I'd take a look at the throttle butterfly (the disk inside the carb) and see if it was closing all the way.
KD9JUR
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- 1982KZ1100D1
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- Patton
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...pulled #4 wire and it made no difference... blip the throttle 1,2&3 all raise the gauge the same but nothing on #4....
Might try swapping #1/4 plug wires to see if problem moves from #4 to #1. Could help diagnosis.
1973 Z1
KZ900 LTD
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- wiredgeorge
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wiredgeorge Motorcycle Carburetors
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- 1982KZ1100D1
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- Frank
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- i800phyco
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I destroyed the ones from my 78 400b that way.To my best knowledge....which isn't that much, shouldn\t you not use carb cleaner on the diaphrams since they are made of rubber?
Ham lake, MN.
77&78 KZ1000A's
A nice 79 1000LTD
And a pile 80 1000LTD
Plus a few others.
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- wiredgeorge
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First thing is to determine which cylinder(s) are not firing. Use a pump bottle with water or orange cleaner or something. Warm the bike. If you spray water on a cylinder that is firing, the water will VAPORIZE. If the cylinder isn't firing, it will still be hot but the water will roll off. FIGURE OUT WHICH CYLINDER(S) ARE NOT FIRING!
OK, your KZ1100 has an electronic ignition. Keep in mind that when you figure out which cylinders are not firing, that they should fire 1 & 4 and 2 & 3. If you have ONE cylinder not firing, the FIRST test is to swap plug wires with the other cylinder on that coil. That is, if #1 isn't firing, swap 1 and 4. If #2 isn't firing, swap 2 and 3. See if the problem moves. If it does, this indicates a BAD WIRE OR BAD PLUG CAP. If the problem doesn't move, this indicates a bad spark plug or bad compression on that cylinder.
If you have TWO non-firing cylinders, your course of action depends on which two. If they are ADJACENT cylinders... like 1 and 2 or 3 and 4, then the problem may be compression OR carburetor/fuel related. If the problem is on 1 and 4 or 2 and 3, then the ignition is the likely place to start looking. If it is ignition, it will be a PICKUP COIL, the IGNITER or IGNITION COIL or could also be faulty wiring or a bad connector between any of these components.
If one or more cylinders don't fire or fire sporadically at idle but then they kick in at higher rpms, dirty carbs are a likely candidate.
Keep in mind that when you are messing around, until you figure out WHY cylinders are not firing, you will be quickly fouling plugs. Clean or replace the plugs each time you try a new test or fix. It is best to use NGK B8ES spark plugs as other brands (the kind your would come up with from an autoparts store cross reference) like Autolite or Champion will not have reliable cross reference info and may actually be the wrong heat range.
Last... check the power going to your coils... see the COIL REPOWERING note on our website. If you can, check your compression (don't rely on a finger) and adjust your valves... if valve clearances are too tight, the valves won't open enough for combustion to occur... especially when the engine warms. We have a "VALVE CLEARANCE" tech article as well that might help there.
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- 1982KZ1100D1
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STRANGE
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- MadKaw500
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