Question about 1977 kawasaki Z 650

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My 77 kz650 looses about half of its power after it is warmed up. iwas told it is my coil packs. i also have a dyna III electronic ign. on the bike and all the coil packs i find on line say they wont work with elec. ign. can you help with my questions?

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Hi mate it could be piston rings when metal gets hot it expands and the barrels expand and losses compression into the crank case or blown gaskets check them by removing head and looking in the exhaust port good luck

Posted on Jul 08, 2009

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Lost power when trying to pull out of a gas station, turned off ignition and after about a minute was able to get power to bike but clock was flashing as if it lost all power. Later that day while riding...


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2. Loose, corroded or broken battery cable.
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6. Faulty ignition switch.
7. Water or dirt in fuel system, carburetor or filter.
8. Fuel tank vent system plugged or gas cap not venting.
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1 Answer

Bike ran with a slight misfire as dayswent past it got worse popping and banging now will not start at all. have renewed fuel taken fuel tap off , rocker cover off checked valves clearances ok new plugs...


Big Al, Has the ign. been modified or does she have points? If your bike has points / condenser Ign. The points are out of adjustment, or worn down to the point they are not opening. This will also change timing as they wear, causing, popping and low power. I do not remember the Ign. set up on this model. Hope this helps.

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Is this free information, to help the less knowledgeable? i'm replacing stock coils with a set of DC1-1 dyna coils (green) on a 1971 honda cb750K1, and installing an electronic ign. my question is as your...


That sounds right to me. Once you have fitted the dyna coils, check the bike runs before fitting any electronic ignition. Many people are quick to throw away the points and condensors, but if you are not covering high milage every year is it really needed? If an electronic ignition fails, you are stuck. Points can be cleaned up and reset at the side of the road and are far cheaper to replace.

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I have power going to the coils but no spark out of the coils this is on a 1985 kaw ltd 454


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