Question about 1990 kawasaki ZZR 1100

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Zzr1100 Fuel Pump not receiving proper voltage

I have a ZZR1100 1990 model. It cranks over but there is only about 6 volts getting through to the Fuel Pump. The Staarter relay is only sending 6 volts through is this a battery problem or the staarter relay. the battery is giving out 12 volts.

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  • albridle Apr 15, 2009

    IF it is the starter relay how would it drop the voltage to the full pump only?

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Hi,
The problem is due to the massive heat build up under the tank.

You can easily replace it with a 90deg bend or similar but be careful not to restrict the flow of fuel. You'll also need to make sure your needle valves are in good condition!
OR
replace it with a low pressure fuel pump using the same wires to power it as this will prevent fuel running when it's offline but will fill all the carbs instantly when powered up and maintain the correct level in the carbs when then engine is working hard. It's very important that the pump comes from a bike with carbs and not injection as injectors work at much higher pressure and fuel will be forced past your float valves.

Posted on Apr 15, 2009

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This cn be a starter problem, better check that area.

Posted on Apr 15, 2009

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Replaced bad fuel pump. Still will not start. Only 6 volts at the pump relay. Bypassing the relay indicated pump is working and plenty of pressure. Checked all the fuses all are good. Any ideas?


Year make and model ?
You should have two hot circuits to the relay. One is for the pump and the other is for the coil of the relay. Usually power comes from the key switch.

Jan 01, 2016 | Cars & Trucks

Tip

Car That Turns Over But Won't Start problem?


There are many possibilities for this problem. But are some are very common for this problem.
1) Check out there is enough gas in your car.
2) Check the charge of the battery. It should be exact 12 volts. if the charge is low the engine will crank but won’t start.
3) Get it confirmed that there is fuel in car and fuel pump is also turning on
4) To check whether fuel pump is turning on or not try this procedure.Insert the key in the ignition, then turn the key to the ON position, and listen carefully from the back seat side you will here an electric noise for about 1 second every time you cycle the key on/off. If you hear nothing then your fuel pump is faulty or not receiving any power. In this case the fuel pump needs replacement.
5)But if fuels pump check out ok.then continues towards engine for finding fault. Check where engine is receiving the gas. Many times clogged fuel filter or blocked fuel injectors don’t let gas to flow towards the engine.
6) If the gas flow is proper towards the engine. Then route towards the spark plugs.
7)Check whether you get spark while you crack the engine. if no spark then it’s the problem in the spark plugs.
8) The spark plugs receive power from coil pack. If the coil pack is having proper voltage the fault in spark plugs is confirmed. But if the coils pack has low voltage then its time to replace the coil pack.

This will help. Thanks.






on Mar 16, 2010 | Chrysler Town & Country Cars & Trucks

1 Answer

Fuse for Mitsubishi fuel pump


It is critically important for turbocharged models that the fuel pump receive the maximum amount of voltage available from the charging and wiring system. The alternator will try to maintain about 13.5 volts into the system. Resistive losses along the current path to the pump will reduce the voltage at the pump to something less than 13.5. If there are less than 12 volts at the pump, the amount of fuel flowing may be much less than expected and perhaps enough less to create lean air-fuel mixtures under heavy boost.

The instructions below show you how to bypass the resistor and relay that the turbocharged 3S models use to reduce voltage to the pump at idle. Please read through the instructions and look at the pictures before attempting this procedure. Before I did this relay/resistor bypass I measured the voltage at the pump using the method shown on my web page 2-fuelpumpvoltage.htm. At idle the pump was receiving about 6.7 to 7.0 volts. I saw from 10.6 to 10.8 volts as boost began to build and then watched that number drop to 10.2 to 10.3 volts as boost hit 15 psi or so and RPM approached redline. After performing the relay/resistor bypass I remeasured the voltage at the fuel pump with the following results.

Cold idle: 11 volts
Warm idle: ~10.6 volts
Warm idle after radiator fan kicked in: 10.35 - 10.55 volts
Acceleration and boost: ~10.5 volts

Feb 02, 2012 | 2000 Mitsubishi Galant

1 Answer

WHERE DO I FIND THE FUSE AND FUEL PUMP RELAY ON MY KWAK ZZR1100 ON A 98 PLATE,UNDERTHE SEAT YES,BUT WHERE??


According to my service manual for the ZZR1100 98-01 it is carburated and has no pump, it is gravity fed.
The 02 model is fuel injected.

Mar 14, 2011 | kawasaki ZZR 1100 Motorcycles

1 Answer

1999 Mercury Grand Marquis. with KOEO, voltage to fuel pump is 6.58 volts. Battery voltage is 12.47 Vdc. Removed fuel pump and installed jumper wire and fuel pump receives battery voltage. Why is voltage...


With my pump failure, I read the exact same 6.5 v at the inertia switch in my trunk with the key in the "on" position and engine not running or cranking. When cranking, the voltage to the pump jumped to +12V and if the engine did run, the voltage should stay at +12V.

The Ford manual states +12v should be at the motor for some number of seconds in the key "on" position then drop off if the engine is not cranking or does not start. In my pump failure case, I never saw 12V at the inertia switch in just the key "on" position, only +6.5V as the +12v fuel relay under the hood never engaged and/or stayed latched on.

In my situation, I measured an open circuit at the pump motor winding and suspect the +6.5V I was reading came from the Powertrain Control Module. I am also guessing if my pump winding was not open, the +6v voltage would have been +12v for a number of seconds for fuel priming as the fuel pump relay is temporarily energized, then drop to zero (relay off) if the engine does not continue to crank or run.

With my pump motor winding open, the Power Control Module may not have been loaded properly to function (reading +6.5 floating volts instead) in the key "on" position and therefore never climbed to the full +12V. There obviously was no fuel pressure at my schrader valve on the fuel rail when cranking which indicated an open wiring circuit (splice, ground or connector) or open pump winding. The 12v I was reading when cranking at least indicated the fuel pump relay was working.

With my new pump installed, I listened for the pump running in just the key "on" position. I believe I barely heard it running after the repair as it was running very quietly which indicates the +12v was there which supports my theory.

Dec 13, 2010 | 1999 Mercury Grand Marquis

1 Answer

Engine cranks starts for a few seconds shuts off


have you checked the pump relay sounds like your relay is ready for a change

Apr 04, 2010 | 2003 Harley Davidson FLSTC Heritage...

1 Answer

I own a 1998 Grand Prix GTP that will crank over but not start.I checked to see if the car has a spark in the plugs,thats fine.I pulled off the cover above the fuel pump in the trunk area to expose the...


Check your Fuel pressure, being the car is fuel injected and a 98, odds are it is Sequencial Injection. If the fuel pump doesnt pump the proper amount of pressure the fuel pressure regulator wont give the engine gas.

Sep 27, 2009 | 1998 Pontiac Grand Prix

1 Answer

Fuel not working


should have 12 volts at pump during engine cranking. with key in "on" position, the fuel pump only gets voltage for 2 seconds if engine is not running. Read voltage during cranking. Check fuel pump relay in battery jucntion box under hood.


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Feb 20, 2009 | 2000 Ford Expedition

1 Answer

1988 jeep wrangler no fuel


check your fuel pump relay and your ignition switch those numbers you gave for voltage are not right, please recheck that you have a ground and 12volts at the pump while cranking please rate -jeff

Jul 09, 2008 | 1988 Jeep Wrangler

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