FZRSupport: the FZROnline Archive

1994 FZR 600 - Newish to me bike, the past on the bike is the Voltage Rectifier-Rregulator (VRR) went bad. I was unaware until the battery started boiling over so I continued riding until the new VRR came (not thinking of the consequences), then out on a ride the bike just all of sudden died. There was no spark and came to the conclusion that the Digital ignitor had faulted due to the bad VRR. A headlight also went out. I have replaced the VRR and the digital ignitor and was expecting the bike to start right up. April 22 update below

Surprise,....it doesnt start. It is getting spark now, I can start it with starter fluid. but it will not run. Then I thought maybe the fuel pump went out due to the past VRR issue. So pull the exit hose leaving the pump and the fuel does squirt out of it when I try to start it but only barely. (although the pump does NOT run when I flick the kill switch to run, but I figure that is because the carbs float bowl piece or whatever are already full of fuel so it doesnt need anymore more and the fuel pump stays off).

old EDIT: Okay I went back out and after trying out the bike again, this time with the fuel line connected to the pump but removed from the carbs (original red hose) the pump wasnt able to push fuel through the hose, and I am guessing that means that the pump is actually faulty. I would think if the pump were to be in working order it could push fuel up the line fairly easily. Anyone agree?

Replacement pumps are fairly expensive and I dont have much time to fiddle with a cheaper option until I am going to need the bike. I need some reassurance that the pump is gone.

Any other ideas are helpful. The bike was running fine prior to the digital ignitor going out.

old EDIT: Okay, this afternoon of 10 April 2013, I had the pump pulled and directly linked with the battery to test it, got the same results as if the pum was connected to the bike's wiring harness. The pump just burped once and didn't run any further. Tested it a few more times with the same results. If there is any more speculation, I wouldn't mind to hear it. Sadly I think the pump is gone, but on a good note I have tracked down my final issue to get this baby back in running condition.

Thanks FZR lovers

APRIL 22 EDIT: So a great guy on the east cost hooked me up with an '88 FZR fuel pump. hooked that baby up and listened to the pump purrr for a awhile, MUSIC to my ears.

Next issue after that is the bike will not idle unless half choke or throttle is given. I read on a post that Don had answered to with possible fouled jets and/or a massive in the air box. Which I did remove the air box when tinkering a few weeks back.

Second issue, now I am back at square one with the VRR issue. After the bike idled for awhile I was fiddling with a new VRR '96 model. And it was extremely hot to the touch and that could not be a good thing.
So I am still looking for ideas on what is wrong?
After some quick and possibly inaccurate research I had read maybe a bad battery would cause the alternator to overcharging still. Eventually ruining my newly replaced VRR.

In need of more trouble shooting ideas. Too scared to run the bike out of fear of ruining my components again.

How full is your fuel tank? The pump shouldn't be necessary for a fairly full tank.

Does the pump chatter with the hose unplugged? Check the fuel pump relay for function.

Sadly the pump no longer seems to chatter like it always seemed to do when it was working. I am going to oull the relay to day and check the normally open/closed circuits on it. The tank is probably 3/4 full at this point though.

I pulled the pump, and it has complete continuity, but that doesn't ensure the pump motor is still good. I am working on testing the relay next, sure looks a bit confusing, but the service manual is helpful with that one. Problem for testing the relay is that I need to apply a power source (says the manual) to specific terminals, but I am not sure how much power to apply nor the ammount of current. It is not specified nor gives warning of too much current. Anyone have ideas on testing the relay?

Just connect 12v as indicated; the internal resistance of the relay coil will prevent over-amping anything.

As always, Don is on point with the electrical suggestions. If you have exhausted all aspects of troubleshooting and decide a new pump is needed, this one (http://www.summitracing.com/parts/mrg-12s/overview/<--click there) should work.

So a great guy on the east cost hooked me up with an '88 FZR fuel pump. hooked that baby up and listened to the pump purrr for a awhile, MUSIC to my ears.

I was thinking the issues were all figured out but basically now I am back at square one with the VRR issue. After the bike idled for awhile I was fiddling with a new VRR '96 model. And it was extremely hot to the touch and that could not be a good thing.

So I am still looking for ideas on what is wrong?

After some quick and possibly inaccurate research I had read maybe a bad battery, with the alternator overcharging still.

How is the VRR grounded? What is the voltage across the battery at 5k?

I have the VRR grounded to the frame on the right side of the bike. I figured if it were grounded like that originally, placing the ground on the opposite side shouldn't matter. Ground is ground, is it necessary to ground it where the battery grounds to the frame?

And I will have to get back to you on the voltage on the battery, wasn't able to get my hands on a multimeter earlier.

I'm having a similar problem. Taking my bike off the hangar and not getting it to start. After a while of digging found that the fuel pump is not getting enough voltage - only max. 7 V, while the battery has 12 V. The fuel pump relay clicks and one of the connectors seems to be getting battery voltage. I wonder if the relay is at fault. Is there any way to test it?

I'm puzzling whether it is CDI or main relay (which includes fuel pump relay, as I understand). Any advice on how to test those two boxes?

Well I know when my CDI was faulted, I didn't get a spark at all. After I replaced it with a functional used CDI, I was able to start the bike up with a starter (fuel pump was out at that point). Not sure if this helps, but maybe add something you could test out to see if your CDI is at least allowing spark to go through.

hi,swap the relay under your left rear side panel."the 11 pin"these can get water in them but you cant see it.they are cheap to buy.also clean the main earth wire conections.you can get a false reading on these with a meter due to damp...