Fuel Pump Issue - Chicagoland Sportbikes
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post #1 of 23 (permalink) Old 05-17-2012, 10:42 AM Thread Starter
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Fuel Pump Issue

Looks like my 06 CBR1000RR's fuel pump might be malfunctioning. Before I replace it, I wanted to run it by you folks to make sure that something else might not be the problem.

When I turn the ignition on, I don't hear the fuel pump sound.

I originally thought it was the battery. Got a new one, charged it, and the multiple tries tries, the bike started.

But the next day, even with a fully charged battery, I don't hear the fuel pump sound.

I'm wondering if the problem can be something else, like blown fuse or bad wiring/soldering in the ignition switch.

The bike only has 5k miles and no accidents.

Any suggestions?

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post #2 of 23 (permalink) Old 05-17-2012, 10:56 AM
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Fuse
Connector (perhaps clean and re-seat it)
Pump (replace)

Cheapest alternative is to swap it for a couple of minutes with a friend with a 1000RR. If his works, you have isolated the problem.

Mileage doesn't really affect the pump, sometimes, they just fail. You should hear it "Prime" when you turn the key on. If not, it needs to be looked at.

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post #3 of 23 (permalink) Old 05-17-2012, 11:06 AM
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Run Stop switch ?

Isn't there a FP relay as well ?

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post #4 of 23 (permalink) Old 05-17-2012, 11:08 AM
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http://www.motoinfo.yoyo.pl/Honda/Honda%20CBR1000RR.jpg

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post #5 of 23 (permalink) Old 05-17-2012, 11:08 AM Thread Starter
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It doesn't prime. It worked couple of times after failing initially, but now I think it crapped out for good.

What connector are you referring to?

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post #6 of 23 (permalink) Old 05-17-2012, 11:09 AM
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Check the 3rd intake valve too. Just in case.
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post #7 of 23 (permalink) Old 05-17-2012, 11:10 AM Thread Starter
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Quote:
Originally Posted by BLARNEY View Post
Run Stop switch ?

Isn't there a FP relay as well ?

Tom
Can you explain some more? Not too savvy with the mechanism.

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post #8 of 23 (permalink) Old 05-17-2012, 11:11 AM
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Top right of the diagram .... three relays, one is fuel cutoff.


IIRC they are the same relay ( read the numbers carefully ) and can be swapped around.



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post #9 of 23 (permalink) Old 05-17-2012, 11:14 AM
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First ...... check the KILL SWITCH on the right handlebar, cycle it a few times and make sure it is in the RUN position.

In the fuse-box, there are three plug-in relays, one of them is for the fuel pump.
Turn the key on a tap this gently with the handle of a screwdriver and see if the pump starts.

Alternately .... with the bike turned OFF you can try swapping these relays with each other ***** IF***** they are the exact same relay.


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post #10 of 23 (permalink) Old 05-17-2012, 11:18 AM
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check your fuses too

check for voltage going to the pump

jumper wire the pump to a 12v battery adn see if it runs(just for a second or so) make sure youre jumpering to the power wires and not the sender wire for the gas light/gauge

-Jason
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post #11 of 23 (permalink) Old 05-17-2012, 11:19 AM
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Quote:
Originally Posted by Pilotx1 View Post
check your fuses too

check for voltage going to the pump

jumper wire the pump to a 12v battery adn see if it runs(just for a second or so) make sure youre jumpering to the power wires and not the sender wire for the gas light/gauge

Careful you don't let the smoke out of the system .... it's hard to recharge.




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post #12 of 23 (permalink) Old 05-17-2012, 11:22 AM
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hence the make sure part

-Jason
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post #13 of 23 (permalink) Old 05-17-2012, 11:23 AM Thread Starter
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Thanks for all the suggestion. Hoping to isolate the problem soon.

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post #14 of 23 (permalink) Old 05-17-2012, 11:26 AM
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Is there 12 volts going to the pump? That is the first question.... You can feasibly hot wire the pump with straight 12 volts from the battery. If the pump turns on it's not the pump.

The ECU tells the pump to turn on and off.

The tip over switch mounted on the nose of the bike tells the computer / ECU to kill the fuel pump as well.

The kill switch tells the fuel pump to turn on and off.

There is a relay that switches open or closed to control the fuel pump. Closed fuel pump is on, open fuel pump is off. Is there 12 volts going to the relay? Is the relay closing? Is there 12 volts coming out of the relay to the fuel pump?

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Last edited by Grasshopper; 05-17-2012 at 11:29 AM.
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post #15 of 23 (permalink) Old 05-17-2012, 11:30 AM
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The easiest thing you can do is pop the tank up. Unplug the pump and hot wire it to 12 volts. That will eliminate the pump. If the pump turns on when 12 volts is applied it's good. Then you need to chase the relay, the kill switch, the tip over switch, fuses, connections to ECU.

My 600RR has the fuel pump wired hot all of the time. The ECU does not control it. When the bike is on the fuel pump is on all of the time.

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Last edited by Grasshopper; 05-17-2012 at 11:34 AM.
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post #16 of 23 (permalink) Old 05-17-2012, 11:38 AM
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Boom!














Nah, never mind... a little pre-mature. LOL!

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post #17 of 23 (permalink) Old 05-17-2012, 11:41 AM
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Quote:
Originally Posted by Wink View Post
Boom!














Nah, never mind... a little pre-mature. LOL!

If the tip over switch is actuated it kills the fuel pump and ignition...

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post #18 of 23 (permalink) Old 05-17-2012, 03:39 PM

 
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Without disconnecting anything you could just use a test light at the pump.

Gus
We offer three kinds of service @ Resurrection
GOOD - CHEAP - FAST
You can pick any two
GOOD service CHEAP won't be FAST
GOOD service FAST won't be CHEAP
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I'd love to help but I don't chase parts.
Please contact other forum members and supporters for parts.
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post #19 of 23 (permalink) Old 05-17-2012, 03:42 PM Thread Starter
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What do you mean?

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post #20 of 23 (permalink) Old 05-17-2012, 06:15 PM

 
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Power wire to the pump has 12v if the light goes on.(test light has a bulb and a grounded end .When you touch something with voltage it lights up)

Most test lights have a sharp point.You can poke it through the wire casing and test for power.Without the risk of a hot 12v.wire needed.

Gus
We offer three kinds of service @ Resurrection
GOOD - CHEAP - FAST
You can pick any two
GOOD service CHEAP won't be FAST
GOOD service FAST won't be CHEAP
FAST service CHEAP won't be GOOD
and cold beer.

I'd love to help but I don't chase parts.
Please contact other forum members and supporters for parts.

Last edited by resurrection; 05-17-2012 at 06:17 PM.
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post #21 of 23 (permalink) Old 05-21-2012, 11:31 AM Thread Starter
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The bike started again yesterday and this morning multiple times without any issues.

This annoys me even more now that I cannot isolate the problem.

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post #22 of 23 (permalink) Old 05-21-2012, 11:41 AM
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Unplug, clean and inspect every connectore possible. Buy some electric contact cleaner and spray in male and female connections. Make sure your battery leads are tight.

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post #23 of 23 (permalink) Old 05-21-2012, 11:44 AM Thread Starter
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Did a check for all the connectors except the fuel pump.

I'll check that out in couple of days.

Thanks everybody.

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