So I'm a relative newcomer to KatRiders, on-road motorcycling, and motorcycle maintenance in general. I've been doing my best to learn as much as possible but I'm currently worried about the status of my Kat. Let me go ahead and explain my work process and the status of the bike at each stage.
1 (When I first got the bike). Difficult to start, once started needs choke or it dies -- If I let off the choke the idle starts going crazy..high low high low etc.
--I figured the carbs were dirty and the spark plugs were ancient...so I cleaned the carbs and replaced the spark plugs.
2. Bike now idles properly (still needs choke) however when I turn the throttle I have to touch it lightly and keep it there until the rpms pick up at which point I can give it more throttle. Otherwise the engine floods and dies out.
Also, cylinders 2 and 4 are not firing when the bike is started and at idle. If I rev the engine at a certain point the tone changes to a much more higher pitched one and all pipes start warming up. After the engine makes this switch, if I let off the throttle it idles pretty well, but after awhile it seems the 2 cylinders crap back out and stop running.
--Figured carbs need synched...so I began by the standard 2 turns out.
--I verified all four cylinders do something by spraying a tiny bit of starter fluid in each of the cylinders...each time the rpms raised so at least they each do -something-.
3. Bike is a complete biotch to start and only runs on the first cylinder when it does...and only runs for a few seconds before it floods out.
--Since I just cleaned the carbs I am now thinking spark. Checked spark at wires...wires 1 and 2 produce a kind of weak spark relative to wires 3 and 4 which make lightning bolts.
So that's where I am at now. I want to pull the coils tomorrow and check the resistance (if anyone knows the appropriate ohms for an 89 kat 600 I'd appreciate it, otherwise I'll go dig through the manual/google it).
Any thoughts? My main confusion is that these conflicts conflict eachother. It used to run fine (relatively speaking) now it barely wants to run at all...could the coilpack just go out like that? Or is it just a carb synch issue.
My Thoughts at this point:
-Bad ignition coils and/or spark plug wires
-Carb synchronization (but even when not synched shouldnt it start?)
-Complete guess: Bad pulse generator coil which to my understanding can cause problems. My tach doesn't work but I've been told this can be just from bad wires/bad tach. I've read that the tach runs off of one of the circuits (either 1-3 or 2-4) and if it doesn't work it can mean the pulse generator coil isnt properly adjusted.
However...the thing that is at the back of my mind is - It worked before...why would everything break?
I left the carbs with my girlfriend's dad who used to own a bike shop. He will be raping them tomorrow and then will try and troubleshoot with me on wednesday.
I appreciate any help at all....thanks a lot.
-Duo Maxwell
**EDIT** Mods: move to mechanics 101 if needed...I thought you needed a post count to post there for some reason...sorry.
1 (When I first got the bike). Difficult to start, once started needs choke or it dies -- If I let off the choke the idle starts going crazy..high low high low etc.
--I figured the carbs were dirty and the spark plugs were ancient...so I cleaned the carbs and replaced the spark plugs.
2. Bike now idles properly (still needs choke) however when I turn the throttle I have to touch it lightly and keep it there until the rpms pick up at which point I can give it more throttle. Otherwise the engine floods and dies out.
Also, cylinders 2 and 4 are not firing when the bike is started and at idle. If I rev the engine at a certain point the tone changes to a much more higher pitched one and all pipes start warming up. After the engine makes this switch, if I let off the throttle it idles pretty well, but after awhile it seems the 2 cylinders crap back out and stop running.
--Figured carbs need synched...so I began by the standard 2 turns out.
--I verified all four cylinders do something by spraying a tiny bit of starter fluid in each of the cylinders...each time the rpms raised so at least they each do -something-.
3. Bike is a complete biotch to start and only runs on the first cylinder when it does...and only runs for a few seconds before it floods out.
--Since I just cleaned the carbs I am now thinking spark. Checked spark at wires...wires 1 and 2 produce a kind of weak spark relative to wires 3 and 4 which make lightning bolts.
So that's where I am at now. I want to pull the coils tomorrow and check the resistance (if anyone knows the appropriate ohms for an 89 kat 600 I'd appreciate it, otherwise I'll go dig through the manual/google it).
Any thoughts? My main confusion is that these conflicts conflict eachother. It used to run fine (relatively speaking) now it barely wants to run at all...could the coilpack just go out like that? Or is it just a carb synch issue.
My Thoughts at this point:
-Bad ignition coils and/or spark plug wires
-Carb synchronization (but even when not synched shouldnt it start?)
-Complete guess: Bad pulse generator coil which to my understanding can cause problems. My tach doesn't work but I've been told this can be just from bad wires/bad tach. I've read that the tach runs off of one of the circuits (either 1-3 or 2-4) and if it doesn't work it can mean the pulse generator coil isnt properly adjusted.
However...the thing that is at the back of my mind is - It worked before...why would everything break?
I left the carbs with my girlfriend's dad who used to own a bike shop. He will be raping them tomorrow and then will try and troubleshoot with me on wednesday.
I appreciate any help at all....thanks a lot.
-Duo Maxwell
**EDIT** Mods: move to mechanics 101 if needed...I thought you needed a post count to post there for some reason...sorry.
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