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The big bog
- Exitpupil
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79 KZ1000 LTD B3, 1075 kit, BS34 carbs, high velocity ported heads, K410 cams, V&H pipe w/custom baffle
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- fredgarvin42
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Update. The battery was the culprit on the bog problem. There was a bonus ground wire connected to the neg terminal of the battery attached to the frame(don't know why). It had the green stuff all over it. I removed the wire and cleaned the neg cable and neg terminal and shazam. Bog be gone. I guess the spark was to weak. That was great...for a day. New problems arose.
An intermittent major power degradation reared its ugly head. I checked spark and did an ohm check on the coils and determined one of the coils is toast. It has infinite resistance on the secondary where the other coil has about 27k ohms on the secondary. So....since the coils are almost identical, and times are tough, I'm going to try the coils off of a 85 Ninja 600 since they appear to be the same (Mounting,etc.). Am I making a bad call? Thoughts anyone?
1980 LTD 1000
1985 Ninja 600
1984 YZ 490
Austin,TX
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- SPARKY47
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- 1980 KZ500 B2
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1980 KZ500 B2
Location: Middle England[/b
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- fredgarvin42
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Coils worked. I used new Accell 8mm plug wires and also cut new wires to properly connect the coils negative and positive leads without butchering the wiring. Looks great and works great, for a few minutes.
The original bog is gone. I have this new issue that showed up once the battery was cleaned up and even with the coils replaced the bike has the same issue. It will rip the back tire off the rim if I twist the throttle. It really scoots and is very responsive and then IT happens.
It seems like I loose two cylinders and I can barely get the thing home. Its like a switch flips and the bike acts like its running on two cylinders. It's a repeatable event. I mess with the bike, go for a quick ride to the same store (grab beer) so it warms up. The bike will instantly lose power on the way back or, after I get home and let the bike sit for a few minutes. When it runs great on the way home. I let it sit for about 5 minutes clean up etc and when I start it half the time it will do its thing of running like it lost two cylinders.
Recap on what I've done so far:
No more bog while its running normal
The tank is squeaky clean on the inside. I have not removed the fuel valve yet to check for debris in the screen since fuel seems to flow pretty well.
Coils plugs and wires have been replaced.
OK folks, suffice to say I'm super bummed and wondering where to go from here.
1980 LTD 1000
1985 Ninja 600
1984 YZ 490
Austin,TX
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- gane
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[img][/img] 1977 KZ1000A1
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- fredgarvin42
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The bike won't run. No spark. I checked the ohms on the coils and they seem fine. Primary 2.7 ohms, secondary about 27K. The coils are off of a 85 Ninja 600 and worked fine for a couple of rides. I checked the original coil impedance. The primary read 1.8 ohms and the secondary is open, no resistance.
I checked power to the coils with the key on and there isn't any voltage there. The bike has some form of a pointless ignition but I don't know what brand or where to begin troubleshooting the device. I checked the wiring and everything seems fine. Thoughts?
1980 LTD 1000
1985 Ninja 600
1984 YZ 490
Austin,TX
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- Patton
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Perhaps the ignition switch is faulty. Or a loose connector or broken wire exists between the ignition switch > igniter > coil. Or positive battery voltage failing to reach the ignition switch.
Good Luck!
1973 Z1
KZ900 LTD
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- fredgarvin42
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When testing the main lead to the coils I get 12v if I ground the other side of the meter to anywhere on the bike. The negative side (the one green and one black wire)give different results. If I check the main red wire (the one that splits off) to the green I get a minuscule voltage reading. Connecting the split red to the black wire I get zero voltage reading. When the wiring is reconnected to the coils there is a 0.00 reading across each coil. I did check the main ground off the igniter and the ground appears to be working.
1980 LTD 1000
1985 Ninja 600
1984 YZ 490
Austin,TX
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- fredgarvin42
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1980 LTD 1000
1985 Ninja 600
1984 YZ 490
Austin,TX
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- Patton
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... No spark... checked power to the coils with the key on and there isn't any voltage there....
... Power to the coil power feed is there... When testing the main lead to the coils I get 12v...
:huh: Am uncertain whether positive battery voltage is or is not reaching a primary winding terminal on each coil when the ignition switch is in the ON position. :S
1973 Z1
KZ900 LTD
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- saxjonz
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- KawboyZ
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Then get your carbs cleaned proper. They may be dirty and affecting the low idle circuit. Take them apart and look, hopefully a good thorough cleaning will set them right. When I got my 79 the bike had sat for sooo long I cleaned and cleaned like I can't tell you how many times and took them twice to get them done "right" and still they were just junk. You have 28 miks with pumpers. Probably the squirt valve diaphragm without a doubt is more than likely been shot for more than a few years although I doubt that would be the bog problem.
The coils and dyna s sound like a great idea considering the coils you said are shot. The coil mod is a given like said before. You will get great spark if you perform that. Right off the bat the engine will run smoother and you will have power that you will definitely notice when taking off. My friends bike had that problem and he got the mod done and it ran great after. You gotta be patient with her she is 29 years old and stuff like wires and that get corroded and don't pass electricity like they should and metal rusts or just pumping gas sometimes you get junk in the tank with a really good fuel filter you will notice that stuff will not affect the gas supply as much.
79 LTD B3
80 LTD B4 1075 kit JE Pistons .410 cam grind, Bassani, 31 keihin CR Specials...
1980 Z1R, 2002 ZRX1200, 2003 ZRX1200
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- fredgarvin42
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1980 LTD 1000
1985 Ninja 600
1984 YZ 490
Austin,TX
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