What to do when your fuel pump clicks like a SOB

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Could this be the reason that when I wind the Vmax up from dead stop to 100+ it acts like it runs out of fuel and dies about a mile down the road. Takes about 5 minutes to get started back up, but then runs fine. Also if in traffic and temp. gauge is high it acts like it wants to choke out(fan the clutch alittle and get going and it runs fine.) Thanks for any help
 
Anyone have a part # for the diaphragm?

I'm making a good size order with ron ayers.com because of there Metzeler price's.

I thought Mondak Motor sports wasn't doing the killer deals anymore without.. Forget his name.
 
While Ron Ayers have pretty good prices you may want to check into www.zanottimotors.com out of Butler, PA. has even better pricing. I was able to save close to $50 on a $300 order earlier this year. Both Ron Ayers and Zanotti will have to order the parts from Yamaha once they receive your order so you may want to at least do some comparisons. One other thing is that Zanotti does not have a parts list so you'll need to know your part #'s going in.
Motorcycle Superstore has good prices on tires with free shipping.
Hope this helps you save some $$$'s.
 
100 years ago, and in a different lifetime, you could get these small diaphram parts with the middle, push-in "titty" mixed into carb kits for automobiles.

I think it was the old Chevrolet quadrajet kits that contained them. I am not sure if those were quite as small as the ones in the Vmax fuel pumps though.

I've got a hand help squeeze lever vacuum pump I use around the garage that has two of the very same little rubber valve parts too.

Somebody makes them, somewhere. IF ANYONE RUNS ACROSS THEM, be SURE TO POST your source.
 
ok i just took mne all apart, and put it back together, nothing looked out of the ordinary but it still clicks for a few seconds, what gives?

absolutely nothing changed as far as clicking is concerned
 
Does it click for a few seconds every single time, or just when the bike's been off for a bit?

Fuel evaporates, so it will rebuild the pressure in the bowls each time, but if you just switched off after running, then switch on again, it should only click maybe 2 or 3 times..
 
i used to never hear it at all, it might click 2 to 3 times if i skipped a riding day due to rain... now it clicks 20-30 times every time i turn the key
 
update: took it apart without my brothers help this time and found that a rubber seal was indeed out of place.
 
Can you buy just the diaphragm ??? Took mine apart and it is missing !!! Prob. Previous owner lost :( pump looks clean tho ... So that's good lol
 
i used to never hear it at all, it might click 2 to 3 times if i skipped a riding day due to rain... now it clicks 20-30 times every time i turn the key

I'm having the same problem, took the pump apart and everything is in place.
anyone have any ideas ???
 
I'm sure you probably have checked, but could their be possible air/ fuel leaks downstream from the pump to the bowls? Faulty bowl drain shutoff? Bad float bowl seal/ gasket.
I'm wondering if there is a way to check the pressure a fuel pump puts out and holds over a period of time, some sort of pressure gauge setup? I believe the pump only puts out 3-4 lbs of pressure or is that the flow rate(gpm???)?
EDIT: LOL, just rethought the GPM statement, we get bad fuel mileage but not that bad!:bang head:
Is it just me or are we seeing more fuel pump related issues this past year? Is it fuel related?


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I'm having the same problem, took the pump apart and everything is in place.
anyone have any ideas ???

your fuel lines are getting old bill, maybe hairline crack or something as those guys said? might be a good excuse to replace them eh?
 
I'm sure you probably have checked, but could their be possible air/ fuel leaks downstream from the pump to the bowls? Faulty bowl drain shutoff? Bad float bowl seal/ gasket.
I'm wondering if there is a way to check the pressure a fuel pump puts out and holds over a period of time, some sort of pressure gauge setup? I believe the pump only puts out 3-4 lbs of pressure or is that the flow rate(gpm???)?
EDIT: LOL, just rethought the GPM statement, we get bad fuel mileage but not that bad!:bang head:
Is it just me or are we seeing more fuel pump related issues this past year? Is it fuel related?


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does seem like this is a common problem recently Brian...
gonna change my fuel lines and hopefully I will get lucky.
the fuel pump is relatively new, 3 years old maybe.
 
Great write up! My 99 has been doing this for a year. Would die every 50 miles or so and have to sit for 10 minutes before it would refire. It always came back to life, so hard to trouble shoot. Thought it was an ignition issue. Today it stayed dead. Pump will click for 5 or so seconds every time I turn the key. Did it 20 times in a row trying to build enough fuel to get me the last 2 miles home. Pulled the fuel line and it would spit then trickle until the pump shut off...definitely not enough fill the carbs or keep it running. Was going to just buy a new pump, but after reading this, I will pull the pump tomorrow and see if this is the issue. Thanks again!
 
Does your fuel pump click for about 5 seconds EVERY time you turn the bike on? If the bowls are full, you should not hear the pump at all. There are multiple possible causes of this problem, but I wanted to post a solution that seems to be fairly common. I got some great advice when I asked about this issue, and here is how I fixed it:

The problem (for me at least) was a misplaced diaphragm in the fuel pump. You'll need to remove the fuel pump and take it apart to reinsert the diaphragm. Sounds a lot more difficult than it is. Start by removing the drivers seat and the faux tank. The next step is to remove the coolant reservoir. It comes out very easily - just remove the two hoses and slide it up:

IMG_6166.jpg



Now we want to disconnect the power supply to the pump. Just follow its wire and undo the connector (there is a small tab to push on the underside):

IMG_6165.jpg


Next you can slacken the two nuts holding the pump:

IMG_6159.jpg


And remove the four frame bolts (take note of the three ground wires attached to the rear bolt on the right side):

IMG_6163.jpg


IMG_6164.jpg


Now you can compress the clips on the two fuel hoses attached to the pump, slide them down the hose, and remove the hoses from the pump.
You'll need to twist them a little a tug pretty hard.
Make sure you have a cloth underneath as a bit of fuel will leak.

IMG_6161.jpg


IMG_6160.jpg


Remove the nuts and washers from the frame and pull the fuel pump out.

Now remove the five screws from the same end of the pump that you took the hoses off and carefully take the top off. Be prepared for some more fuel to spill out, and look carefully for a flat rubber diaphragm about the same diameter as a pencil. You will have three sections: a 'lid', a center piece about a half inch thick, and the rest of the fuel pump body. Inspect everything. I had some rust-colored gunk that I cleaned up. The inside of the lid:

IMG_6149.jpg


The middle section looks something like this:

IMG_6151marked.jpg


Notice that there is a rubber tit sticking out of the top right hand hole, but nothing in the hole that the arrow is pointing to. The missing diaphragm in my pump fell out when I disassembled it, but you may need to look for yours. Here is what it looks like:

IMG_6152.jpg


Place the diaphragm into the hole so that the tit sticks out where it is supposed to. I had to use a small screwdriver to get it in. It should look like this when you are done:

IMG_6154.jpg


Thats it! Put er back together, start the bike, and then turn it on and off a couple of times. When the bowls are full, the pump should no longer engage and you won't hear the clicking. Oh yeah, make sure you put the pump back together correctly - When the lid sits on the body it should look like this:

IMG_6156.jpg


Everything else is just in reverse. Good luck!

That was like a PORNO for petes sake but mine was definitely cockeyed!!!!
 
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