Question about 1996 kawasaki ZX-7R

1 Answer

No electrical after sudden braking on highway

Hi there, after riding on the highway for about 30 minutes with no issues I hit the brakes and suddenly lost ALL electrical. No panel lights, no ignition, no sound from the fuel pump, no horn, dead as a doornail. Load tested the battery and it was fully charged. Checked all the fuses and they seemed fine. Checked for any loose connections under the seat and couldn't find any. The engine turns over with direct ignition but with the key in the ON position I get absolutely no sign of life. During the day I tend to ride with the high beams on for safety reasons. The bike has 36k and has had the carbs recently cleaned. First time this has ever happened. Any ideas would be greatly appreciated !!!

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  • Contributor
  • 8 Answers

Probably a broken cable where the insulation has not been broken by the shock load, have a look at the ground terminal area it can look ok but a pull on it to feel any stretch will do it and if not try others in battery area, test main fuse they can look visually ok but may be fractured.

Posted on Apr 13, 2014

  • Aaron Clark
    Aaron Clark Apr 23, 2014

    Brian Olliver nailed it. You are a genius sir. After much testing it turned out to be a partially melted contact where the main harness connected to the ignition plug. One more example that electrical problems, while tedious, generally aren't difficult to fix if you're willing to do your due diligence. Thanks again Brian !!!

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 126 Answers

SOURCE: engine runs, but it will not rev up past 2000-3000 rpms,

are you turning the choke off after its warmed up? most will not run with the choke on and warmed up.

also try running it with the gas cap open to see if you have a vent issue in your tank. if air can't get in, then gas can't flow.

if not a choke or vent issue, then try this. turn the petcock off and then disconnect the fuel lines one at a time going into the carb. start with carb fuel line #1 disconnected (and the rest connected) and in a coffee can, turn petcock on and ignition too. fuel pump should come on momentarily and inject some fuel. see how the quantity looks. reconnect the line to carb #1 and repeat for carbs #2 - #4. your looking for a decrease in fuel to a couple of cylinders.

if all looks fine, i would then focus on the carb floats & jets. have the carbs been off for a good cleaning lately? modern fuel breaks down quickly and could cause a gumming condition in the carbs. spraying the sea foam or carb cleaner into the carbs is bypassing the everything in the carb bowl (but it means the spark plugs are ok) so there could be an obstruction. i would look there first.

if uncomfortable removing the bank of carbs, you can try a quick fix first. with the petcock closed, open the drain screws of each carb and let the gas drain out. go and buy some yamaha carb cleaner (liquid in a black bottle) at a yamaha motorcycle dealer. mix it in a separate container with gas as recommended. close the drain screws on each carb. pour the mixture into each fuel line feeding the carb and let it sit overnight. DO NOT POUR THIS MIXTURE INTO YOUR TANK. its not a fuel additive, but a cleaner that will not harm orings or gaskets, but it will not ignite with a spark plug. open the drain screws the next morning and let the mixture pour out. reconnect the fuel lines to the carbs and test drive it.

if that didn't work, then removing the carbs for a good cleaning is my next step. good luck.

Posted on Jan 28, 2009

  • 2 Answers

SOURCE: ZZR400 turning but not firing

Dear hairybikeruk, Pl check your bykes relay. If its not working properly you may face the problem. It stops charging the battery though the battery might be a new one. Thanks.
Sunil Bhagwat
Mumbai
India

Posted on Feb 04, 2009

DickCanFixIt
  • 948 Answers

SOURCE: dead battery after a long ride

Yes, it could be the regulator. Running a battery flat MAY kill it, so try to recharge it and then load test it. Put a fully charged battery in the bike. Hook up a voltmeter and start the bike. Rev engine to about 3-4000 rpm. If your regulator is working you should be getting about 14v. If the reading does not change from what it was before you started the bike, your charging system is not working. Do test the parts before you simply replace them.

Posted on Mar 16, 2009

  • 440 Answers

SOURCE: LOST POWER WHILE RIDING

It is likely that youve popped a fuse
The battery would have to be totalled to behave like that
But it sounds like the battery isnt being charged properly. Make sure the voltage across the batt terminals is at least 13.5v at tickover rising to no more than 15.5v at higher revs
Make sure the battery connections are TIGHT as well
Ride-Safe
Bike-Doc

Please mark this as helpful (if it has been!!)

Posted on Aug 14, 2009

Benimur
  • 6966 Answers

SOURCE: 1992 Kawasaki Ninja 600R Electrical Problems

Hi and welcome to FixYa,

A couple of initial checks (after battery has been fully charged):

  • presence or absence of spark when starting - unplug 1 of the sparkplug wires. Attach a spare known good sparkplug and lay it against any metal part. Crank/start the engine. Chaeck for sparks;
  • try starting with the clutch lever pulled in and/or the sidestand folded up;
  • exercise the 'Kill Switch' and the ignition switch;
  • loosen the drain screws of the carbs.  Note the quality and quantity of fuel that would flow out from the drain hose. Compare between all carbs.
Please postback results of above initial tests.

Good luck and thank you for asking FixYa.

Posted on Sep 10, 2009

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