Author Topic: Stupid crappy f***ing float valves!! (Read 7642 times)

andrewsw · « **on:** June 14, 2007, 08:04:52 PM »

Argh!!!

So I pulled the tank et al and did the valves the other day. The tank was pretty close to empty and of course got sloshed around a bunch. So the next day... won't run for crap. Had to keep it practically wide open and the revs up HIGH

to get it home. Everyone's lookin' at me funny

So I figure I got some stuff in the float valves (you know the story). I pull the bowls (while on the bike) and find so much crap in there that three of the four are actually STUCK from the chunks down in them.

Anyway, cut to the next day after fixing it all up and putting in an inline filter and its *STILL* running like crap. I thought I had flushed the lines, but obviously not well enough. I find yet ANOTHER stuck valve

argh. on top of all that, I think I've dumped a bunch of gas into my oil as a result.

Yee haw.

A

interfuse · « **Reply #1 on:** June 14, 2007, 08:17:03 PM »

Three words...

LINE YOUR TANK

andrewsw · « **Reply #2 on:** June 14, 2007, 09:31:58 PM »

yeah... this winter I think.

actually, this tank was holding up really well until just this last winter. oh well.

A

Banditmax · « **Reply #3 on:** June 15, 2007, 06:32:08 AM »

And watch out i put in an inline filter the other day and it sucked wouldnt flow enough petrol for the carbs.

Bartjan · « **Reply #4 on:** June 15, 2007, 06:51:33 AM »

get a bigger inline filter

running without one gives these troubles. a good inline filter at a car-store doesnt cost more then 2 euro and saves you from these carb hickups.

i even have an fuel inline filter on my home-pc to filter the water going through the watercooling

Banditmax · « **Reply #5 on:** June 15, 2007, 08:19:30 AM »

May as well line my tank really saves the effort of running a restrictive inline filter.

Bartjan · « **Reply #6 on:** June 15, 2007, 09:24:24 AM »

what exactly do you mean with line the tank? do you mean fix the inside of the tank so theres no rust and other stuff or do you mean that you put a filter in the tank? or something else?

with both things I would still advise to also run an inline filter. they are not all restrictive you know

Banditmax · « **Reply #7 on:** June 15, 2007, 09:27:22 AM »

i mean put a coating of fibreglass like stuff on the inside of my tank so its completely clean. Cause at the end of the day the tap has a filter on it too unless your using prime.

Bartjan · « **Reply #8 on:** June 15, 2007, 11:54:38 AM »

having a good tank and a good tap with filter doesnt mean theres no need for an inline filter

a €2 non-restrictive inline filter is one of the best investments you can make for the B4

andrewsw · « **Reply #9 on:** June 15, 2007, 03:57:41 PM »

I find it hard to believe that a B4 could suck enough gas to overload an inline filter made for a car. But... my saga continues.

I've cleaned up my carbs, readjusted the floats (they got majorly tweaked in this whole thing), resynched the carbs, and installed this rather large inline filter.

It seems pretty nice -- its a universal deal with a cleanable filter element and a glass tube body so you can visually check it. It comes with three different sized nipples to attach the fuel line to. The thing is pretty big, I can't imagine that it won't flow enough fuel...

But I'm still getting some intermittent problems with it stumbling and miss firing. It seems to hit in the mids (right around 7000 rpm) but is very intermittent. I'm wondering if its the fuel filter restricting the fuel flow. But then it has no trouble on the mains up above about 8,000 or so where its really pulling fuel. And I ran it on the highway at a good steady wide open for a while with no problems. I did clean the air filter... maybe I need to tweak the needles. More trouble shooting. ugh.

A

Banditmax · « **Reply #10 on:** June 15, 2007, 06:17:29 PM »

Nah that sounds like its not the fuel filter my inline one stopped the bike from revving at all.

interfuse · « **Reply #11 on:** June 15, 2007, 07:30:41 PM »

I've also got some tinkering to do... Aren't carbs fun? I can't wait to buy a bike with FI.

andrewsw · « **Reply #12 on:** June 15, 2007, 07:42:13 PM »

Banditmax: yeah. I agree. I think there is still *MORE* crap in the line to be flushed out. That and my choke cable appears to be routed incorrectly resulting in some annoying issues there. ON top of it all, I think I'm still running a little lean on the needles.

Interfuse: that's half the fun, though if I could get to the carbs better without lifting hte tank, life would be good.... maybeits time to chuck the airbox for access sake ;)

A

gsxr400 racer · « **Reply #13 on:** June 15, 2007, 09:55:04 PM »

have you checked that your coil + and _ are tight or that the tab to the kick stand switch is not bent and fully pushing the switch in these two thing will make you insane looking for problems.

duane · « **Reply #14 on:** June 15, 2007, 10:14:56 PM »

Quote from: "andrewsw"

still *MORE* crap in the line to be flushed out.

Just what line are you talking about? The hose that goes from the petcock to the carb bodies? Doubtful there's anything large enough to pass through the petcock filters and still be stuck in the hose.

I cant believe after all these posts no one yet has mentioned clogged jets. If a lot of particles have passed into the carbs it would be the first thing I'd head for. Espically the idle jets. If and when you do get there, pass a piece of wire through them, don't just blow air through them. Good luck.