Fuel pump clicks - Should I take it apart?

[movenon]

'Scuse my newbie ignorance men, but do all FJ1200's have fuel pumps? I don't think my 1TX has one? Cheers, Terry. (mentally preparing for a bashing.......)  

No problem Terry. Questions are always good. The answer is no. 1988-1993 FJ's have a fuel pump, the 84-87's are gravity feed. Because of the low head pressure in the gravity feed models they do not have a fuel filter and there needle and seat orifice's in the carbs are larger to flow fuel easier.
The fuel pump models have a fuel filter and smaller orifice's in there needle and seats and some additional control from the CDI for the fuel pump relay.
George

[Harvy]

'Scuse my newbie ignorance men, but do all FJ1200's have fuel pumps? I don't think my 1TX has one? Cheers, Terry. (mentally preparing for a bashing.......) 

I think it was from 84-87 before the fuel pumps Terry.


Harvy

[theLeopard]

I hope he researches it and reports back, I would love to learn more about fuel pumps but I'm not troubleshooting mine

[simi_ed]

ooc, what did you expect the fuel pump to do when independently stimulated?
(other than click)

My expectation is that it will hum/vibrate while power is applied.  Instead, my pump just makes a single faint click, like a relay.  One click. 

I have been busy with other things and haven't pulled the cap off the end of the pump and take a look inside, but I will later today.

Sorry, but your expectation is wrong.  The actions of the fuel pump are not dependent on vacuum! 

The pump will cycle exactly 1x when 12V is applied if not installed.  The pump cycles when an AC signal is supplied from the ignition.  When the key is 1st turned on, there is a signal sent for 4-5 seconds to allow the pump to fill the carb bowls.  If the bike has sat long enough for the carbs to be emptied, you may need to turn the key off and then back on several times for the carbs to fill.  You'll know they're full when you hear the pump cycling slow, then click 1 or 2 x then nothing further until the engine is started.  If you install the pump and it behaves as such, you're in good shape.

[Terry in Australia]

Hey thanks guys, I appreciate your wealth of knowledge! Cheers, Terry.