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  #1  
Old 12th November 2017, 05:06 PM
menapia dude menapia dude is online now
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Biker.ie Member No. 10718 from wexford
1,606 posts since Jun 2008
Motorbike: few bits n bobs
Modifications: few
Default fuel pump not engaging

folks i have a 2010 fatboy on an optimate 4 i think the battery is wanked but she turns over slowly but when ignition is put on the fuel pump primes before pressing the start button i noticed today that the pump not coming on but the bike turned over any help be great just hoping its the battery
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  #2  
Old 12th November 2017, 05:31 PM
Gixxer's Avatar
Gixxer Gixxer is offline
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11,429 posts since Nov 2009
Motorbike: NSU Quickly
Modifications: Lobotomy
Default Re: fuel pump not engaging

Sounds like the battery is wanked.
Have you tried a new battery?
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  #3  
Old 12th November 2017, 05:37 PM
-alan-'s Avatar
-alan- -alan- is offline
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2,280 posts since Dec 2011
Motorbike: VRod & CB450
Default Re: fuel pump not engaging

Dunno for sure but the ecu can play up if the voltage level gets low on some of the Harleys. Do you have another battery to give it a shot with ?

If not, and you've got the patience - and a multi-meter - recharge the battery and then let it sit for an hour or so you can check the voltage to see what state the battery's in.

Battery Voltage and State of Charge:

12.66v . . . . . . . . . . 100%
12.45v . . . . . . . . . . 75%
12.24v . . . . . . . . . . 50%
12.06v . . . . . . . . . . 25%
11.89v . . . . . . . . . . 0%

If she's round the 25% after the charge and settling period (or less), then your battery's a goner.
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  #4  
Old 12th November 2017, 05:42 PM
menapia dude menapia dude is online now
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Original Poster of This Thread Topic Starter
 
Biker.ie Member No. 10718 from wexford
1,606 posts since Jun 2008
Motorbike: few bits n bobs
Modifications: few
Default Re: fuel pump not engaging

Originally Posted by Gixxer
Sounds like the battery is wanked.
Have you tried a new battery?
200 fecking yoyos for a new one Gixer wouldnt mind trading her in in march so may try a new batt i think thanks dude
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  #5  
Old 12th November 2017, 05:50 PM
menapia dude menapia dude is online now
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Original Poster of This Thread Topic Starter
 
Biker.ie Member No. 10718 from wexford
1,606 posts since Jun 2008
Motorbike: few bits n bobs
Modifications: few
Default Re: fuel pump not engaging

Originally Posted by -alan-
Dunno for sure but the ecu can play up if the voltage level gets low on some of the Harleys. Do you have another battery to give it a shot with ?

If not, and you've got the patience - and a multi-meter - recharge the battery and then let it sit for an hour or so you can check the voltage to see what state the battery's in.

Battery Voltage and State of Charge:

12.66v . . . . . . . . . . 100%
12.45v . . . . . . . . . . 75%
12.24v . . . . . . . . . . 50%
12.06v . . . . . . . . . . 25%
11.89v . . . . .

If she's round the 25% after the charge and settling period (or less), then your battery's a goner.


leaning towards battery mate will stick meter on her shortly see whats reading,as she turning over slower than normal i still think the fuel pump should have came on
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  #6  
Old 12th November 2017, 06:03 PM
-alan-'s Avatar
-alan- -alan- is offline
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2,280 posts since Dec 2011
Motorbike: VRod & CB450
Default Re: fuel pump not engaging

Might be worth checking if the fuse in the circuit with the fuel pump in it is sound - and that you're getting a voltage at it when you turn the key on.
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  #7  
Old 12th November 2017, 06:48 PM
johnny b johnny b is offline
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Biker.ie Member No. 5067 from Kildare-ish.
4,339 posts since Apr 2007
Motorbike: RR4 Blade
Modifications: Arrow can, pc3.
Default Re: fuel pump not engaging

200e for a battery! Fuck that.

Get the code off the one thats in it then ring these lads below and see how much they are?

I find them much cheaper than most places.
https://www.batteriesdirect.ie/magento/
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  #8  
Old 12th November 2017, 06:55 PM
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Gixxer Gixxer is offline
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Default Re: fuel pump not engaging

Originally Posted by menapia dude
200 fecking yoyos for a new one Gixer wouldnt mind trading her in in march so may try a new batt i think thanks dude
Surely that's an HD price?
Just get the same battery elsewhere for 1/3 the price
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  #9  
Old 12th November 2017, 08:52 PM
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Olaf Maxwell Olaf Maxwell is offline
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Motorbike: BMW K100LT92 K100RT84
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Default Re: fuel pump not engaging

I get my batteries for the BMW K bikes in a lawnmower shop. Seriously, €50-60 is all they cost and you are never far from one.

Suppose for a Harley you could try a tractor shop.

All jokes aside none of the manufacturers make their own batteries, you're only paying for the stamp on the box.
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  #10  
Old 13th November 2017, 12:20 AM
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Jonjo Jonjo is offline
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588 posts since Feb 2010
My Motorcycle Pics Motorbike: Triumph Explorer,Rocket 3
Modifications: Loads, Loads, Loads.
Default Re: fuel pump not engaging

Originally Posted by Olaf Maxwell
I get my batteries for the BMW K bikes in a lawnmower shop. Seriously, 50-60 is all they cost and you are never far from one.

Suppose for a Harley you could try a tractor shop.

All jokes aside none of the manufacturers make their own batteries, you're only paying for the stamp on the box.
Need a replacement battery for my Triumph Rocket 3. Anyone know of a supplier of Scorpion battery's for this bike in Ireland?
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  #11  
Old 15th November 2017, 08:38 AM
menapia dude menapia dude is online now
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Original Poster of This Thread Topic Starter
 
Biker.ie Member No. 10718 from wexford
1,606 posts since Jun 2008
Motorbike: few bits n bobs
Modifications: few
Default Re: fuel pump not engaging

right folks i put a new yuasa 30a batt in the 2010 fatboy she still not engaging the fuel pump,when i turn OFF the switch i can hear like a back trickle coming form it but when i turn it on again it wont pump,have tested all fuses and leads any hints folks thanks

Last edited by menapia dude; 15th November 2017 at 08:51 AM.
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  #12  
Old 15th November 2017, 10:41 AM
FJRLEE FJRLEE is offline
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650 posts since Jun 2007
Motorbike: GL1800,S10,BT1100,TMax
Default Re: fuel pump not engaging

Normally before cranking the fuel pump clicks a few times to pressurise the delivery system, then cuts off. Then on and off as needed as fuel is consumed.

If you leave it off for a few hours, the pressure dimishes a bit and you may get a click or two just to bring it back up to pressure. Sometimes no click at all if the interval is short.

It then only pumps to keep up with demand.

Disconnect the fuel line from the throttle body and it should keep pumping (into a petrol can).

Obviously be very careful with spills.
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  #13  
Old 15th November 2017, 10:51 AM
Onlybikerinthevillage Onlybikerinthevillage is offline
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31 posts since Apr 2017
Default Re: fuel pump not engaging

Did you reset the immobiliser
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  #14  
Old 15th November 2017, 11:10 AM
menapia dude menapia dude is online now
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Original Poster of This Thread Topic Starter
 
Biker.ie Member No. 10718 from wexford
1,606 posts since Jun 2008
Motorbike: few bits n bobs
Modifications: few
Default Re: fuel pump not engaging

replaced battery thats all, dublin harley told me it sounds like the fuel pump relay,

told me to switch the 2 relays as they are the same,and see does the pump come on

why would i need to reset the immobiliser ?,its cranking fine but fuel pump will not prime ?
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  #15  
Old 15th November 2017, 11:39 AM
johnny b johnny b is offline
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Biker.ie Member No. 5067 from Kildare-ish.
4,339 posts since Apr 2007
Motorbike: RR4 Blade
Modifications: Arrow can, pc3.
Default Re: fuel pump not engaging

Switch the relays then and report back after....
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  #16  
Old 15th November 2017, 12:21 PM
Onlybikerinthevillage Onlybikerinthevillage is offline
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Biker.ie Member No. 37129
31 posts since Apr 2017
Default Re: fuel pump not engaging

Originally Posted by menapia dude
replaced battery thats all, dublin harley told me it sounds like the fuel pump relay,

told me to switch the 2 relays as they are the same,and see does the pump come on

why would i need to reset the immobiliser ?,its cranking fine but fuel pump will not prime ?
Mate had a similar problem after changing battery on v rod. Hed to hold keys over the tank or something like that anyway
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  #17  
Old 15th November 2017, 12:21 PM
-alan-'s Avatar
-alan- -alan- is offline
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Biker.ie Member No. 27890
2,280 posts since Dec 2011
Motorbike: VRod & CB450
Default Re: fuel pump not engaging

Is she getting spark ?
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  #18  
Old 15th November 2017, 12:29 PM
menapia dude menapia dude is online now
MotoGP Legend
Original Poster of This Thread Topic Starter
 
Biker.ie Member No. 10718 from wexford
1,606 posts since Jun 2008
Motorbike: few bits n bobs
Modifications: few
Default Re: fuel pump not engaging

Originally Posted by -alan-
Is she getting spark ?
Alan,it is getting spark,just the fuel pump wont prime
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  #19  
Old 15th November 2017, 12:30 PM
menapia dude menapia dude is online now
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Original Poster of This Thread Topic Starter
 
Biker.ie Member No. 10718 from wexford
1,606 posts since Jun 2008
Motorbike: few bits n bobs
Modifications: few
Default Re: fuel pump not engaging

Originally Posted by Onlybikerinthevillage
Mate had a similar problem after changing battery on v rod. Hed to hold keys over the tank or something like that anyway
thanks mate will try that also
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  #20  
Old 15th November 2017, 06:21 PM
menapia dude menapia dude is online now
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Original Poster of This Thread Topic Starter
 
Biker.ie Member No. 10718 from wexford
1,606 posts since Jun 2008
Motorbike: few bits n bobs
Modifications: few
Default Re: fuel pump not engaging

wooooop wooooop problem solved folks,it was the fuel pump relay switched the 2 relays and the pump worked thank u all for the help as always fair play to ye

now where to get the relay ?

Last edited by menapia dude; 15th November 2017 at 06:44 PM.
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