20 Most Recent 1998 kawasaki ZX-7R Questions & Answers

Loss of compression? Does use a lot a lot of oil or blue smoke a lot?

ring dealer lol or look oin the bikes them selves at local dealer as the one with stripe can be live lol

Hi, any more details?
What is the battery like? The regulator/rectifier may have gone, killing the battery and so stopping the bike.
More info needed for a proper diagnosis

it would be the head gasket are the water pump seal

usually a burnt valve or bad rocker do compression test and check plugs

Hi and welcome to FixYa,

On most versions, the output of the voltage regulator (white wire) is directly feed to the battery's + terminal through the main 30 Amps fuse in the starter relay. However, the regulator needs a switched +12 (usually brown wire) to go active which is fed fron the IGN switch. The other wires of the regulator are 3 yellow wires from the stator and a black / yellow to ground.

Good luck and thank you for asking FixYa.

is the wiring stowed near where the old signals were? if they are, is there a common color wire between all 4 signals?

if there isn't a common color and you are handy with a voltmeter (set to ohms with the buzzer on), you can ring them to ground (an unpainted frame bolt) to see which ones buzz. those that buzz to ground with the ignition off are the ground (negative) wires. the other is the turn signal wire.

the last step (assuming either the rear signals or front signals are a 3 wire system) is to find which wire is for running lights and which is for signals to flash. if you only have 2 wires at each signal, then skip this step.

set the voltmeter to DC volts (20v range is fine), turn the bike to the on position (don't start it), keep the turn signal switch off and place the positive lead of the voltmeter to one of the 2 remaining wires and the other to the ground wire (you just found out which is ground in the previous step) and see if the voltmeter jumps to at least 11 volts. if it does, then you have just determined which wire is the running lights wire. if it doesn't, then move it to the other wire to see if that makes the voltmeter move.

repeat at the other signals that have a 3 wire system.

good luck.

run a jumper from your battery positive to a long lead and remove the key switch. only one wire powers up the bike. use a probe to find it. when the bike powers up the dash, then you should be able to start with a remote starter switch

Check the starter relay, solenoid and fuses

LED signals often need an extra resister in the circuit to give the flasher can enough load to flash
some have this already in the wiring provided, some need an accessory one

The clutch plates are dragging. This causes the clutch shaft to turn even when the bike is in neutral and the clutch is dis-engaged ( handle pulled in ). When the shift fork moves to engage 1st gear, the bike jumps due to the shaft rotation. When was the last oil change? Dirty oil can cause clutch drag. Also, are you using synthetic lubricants? Some of them can swell the cork on the friction plates and that swelling causes dragging.

Cheap answer try your plugs they may be fouling,

does it idle ok ? were the jets removed and cleaned ? is your plug gap correct ? check on those and get back to me.

Change bulb?

You should ride with high beam in bright daylight anyway (for safety) unless it is exceptionally bright.

If the brushes have worn out then all you will get is as you describe. You will get similar results if there is a bad connection on the starter motor as well. Check the power with a bulb connected with flex.
Changing the brushes is easy. Don't pay a fortune for a new starter!
Hope that helps.

Availability of parts for the old bikes!

off the ignition switch then change the fuse and then switch on, if it doesnt work check your starting circuit cut-off relay

http://www.youtube.com/watch?v=b0evfObrIh8 Here you go. If you have any questions or comments press add comment in upper right corner, or email me at [email protected]. :)

Derek Carden
Premium FixYa Team

i try to crank my 93 zx7 the rpm jumps but nothing else?

http://www.carlsalter.com/motorcycle-manuals.asp

free pdf service manual here should tell you everything