Oil level myth

[dannymax]

Another possible source could be failed float seat o-rings allowing fuel by the needle/seat.

 

[blaxmax]

Another possible source could be failed float seat o-rings allowing fuel by the needle/seat.

+1 I just sent 4 to a maxxer in canada and that is exactly what was happening with his.

 

[one2dmax]

You can't use aftermarket brass. They are all junk. Some of the aftermarket "gaskets" and orings are ok but the brass is just complete ****.

 

[naughtyG]

My experience with gas leaking was to do with rust in the fuel tank, where the fine rust dust entered the carbs and kept the float valves from shutting properly. That resulted in fuel leaking into the carbs, and then into the motor, and even out through the exhaust, so possibly different than in this case.

Interestingly, I have this problem where my fuel pump always clicks *a lot*, regardless of how little or how how long I've left the bike. Overnight, for example, and it'll click at least 15-20 times, indicating dry fuel bowls. But, I have no fuel in my oil, just **** fuel consumption, and lots of fuel pump clicking. So, where does it go, and why??

 

[blaxmax]

Take it apart and flip the rubber diaphram over.

 

[dannymax]

You can't use aftermarket brass. They are all junk. Some of the aftermarket "gaskets" and orings are ok but the brass is just complete ****.

+1 I've mic'd several aftermarket float seats and found them out of spec by .002" - .005", both over & under size.....total junk!

 

[jfeagins]

....
Interestingly, I have this problem where my fuel pump always clicks *a lot*, regardless of how little or how how long I've left the bike. Overnight, for example, and it'll click at least 15-20 times, indicating dry fuel bowls. But, I have no fuel in my oil, just **** fuel consumption, and lots of fuel pump clicking. So, where does it go, and why??

It's time you took your fuel pump apart and carefully inspect it's two tiny rubber diaphragms. Most likely, one of them has become dislodged from it's proper position, and your pump is having difficulty keeping up normal fuel pressure.

Common problem with our pumps, it seems.

 

[dante1604]

What is the "Brass" or Float seat?

 

[dannymax]

What is the "Brass" or Float seat?

"Brass" would include any carb parts made out of brass....avoid buying any brass parts from aftermarket sources,

The float needle and seat assembly is parts 36 - 39 in the attached link:

http://www.ronayers.com/oemparts/a/yam/50043b9bf8700209bc78d3e9/carburetor

 

[sdt354]

So far I've lucked out not having to change a seat. I do check them. They are no joy to get out and replaced. I've played with junk carbs a bit to remove them. That would be a great stickie if anyone has a method.

 

[davesax36]

Drill pilot hole.
Screw in small sheet metal screw.
Yank with pliers.


You're welcome

 

[Barry barker]

Drill pilot hole.
Screw in small sheet metal screw.
Yank with pliers.


You're welcome

Wish I had thought of that, great idea. Thanks,

 

[dannymax]

Send them to the BRC Carb Shop, we've pulled dozens of 'em.

 

[sdt354]

Thanks Dave. I tried some old Venture carbs today. They drove right out. They are a little different though.

 

[davesax36]

I'm pretty sure I stole my how-to from Danny anyway.

 

[mista_max]

I thought you were supposed to check the level in sight glass while engine was running and make sure it was between the marks.

 

[DMAN999]

I thought you were supposed to check the level in sight glass while engine was running and make sure it was between the marks.

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