need a little help

Started by Jim8208, July 19, 2010, 05:12:18 PM

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LIMagna

I would avoid using something like petroleum jelly to lubricate any rubber parts.  I've heard that it can have an adverse long term affect on the rubber.   You might try the pure silicon lube that you'll find in a scuba shop or even the stuff from a pool supply store. 
Charlie
=======================================
96 VF750C Magna - Pearl Shinning Yellow - Factory Pro Jet Kit
Vance&Hines Classic II Pipes - Progressive 440 Rear Shocks
Race Tech Gold Valve Cartridge Emulators & Fork Springs

16 BMW R1200RT - :) :) :)

John Luttrell

Silicon will work fine too, but petroleum jelly is also compatible with fuel system seals.
John Luttrell
2001 VF750c Magna
http://redneckdrifter.bravehost.com/

LIMagna

Now that you mention it, it seems reasonable that rubber products that will come in contact with gasoline should do just fine with a petroleum based lubricant.  I've  been playing with scuba & pool gear for so many years that I just never thought about it any other way. 
Charlie
=======================================
96 VF750C Magna - Pearl Shinning Yellow - Factory Pro Jet Kit
Vance&Hines Classic II Pipes - Progressive 440 Rear Shocks
Race Tech Gold Valve Cartridge Emulators & Fork Springs

16 BMW R1200RT - :) :) :)

Lurkin

Throwing this out there,,, is there some reasonable way to pressurize the carb bank/fuel lines while it's off?  I was just thinking before throwing more parts at it, finding the leak would be best (I know, duhhh), but how to do that?

Pressurize the fuel system and look for leak, add color to the fuel and remount (painful process since then have to dismount the carbs), pressurize with air (would need to get floats up to seal that part first, also dangerous if using too much psi), something using a Mity-Vac, smoke,,,

John Luttrell

#19
You can try it with a bicycle pump; just disconnect the fuel line down stream of the vacuum shut off valve, then make sure there is fuel in the line and apply a small amount of air pressure to the lines.  Bare in mind, that it won't take much pressure to force the float needles off their seats, allowing extra fuel into the bowls, so try to keep the pressure to a minimum or you will have fuel coming out of the over flows.
John Luttrell
2001 VF750c Magna
http://redneckdrifter.bravehost.com/

Jim8208

Quote from: John Luttrell on July 21, 2010, 01:14:41 PM
You can try it with a bicycle pump; just disconnect the fuel line down stream of the vacuum shut off valve, then make sure there is fuel in the line and apply a small amount of air pressure to the lines.  Bare in mind, that it won't take much pressure to force the float needles off their seats, allowing extra fuel into the bowls, so try to keep the pressure to a minimum or you will have fuel coming out of the over flows.

Hey John, I sent you a PM about this...Thanks

John Luttrell

Quote from: Jim8208 on July 21, 2010, 05:36:12 PM
Quote from: John Luttrell on July 21, 2010, 01:14:41 PM
You can try it with a bicycle pump; just disconnect the fuel line down stream of the vacuum shut off valve, then make sure there is fuel in the line and apply a small amount of air pressure to the lines.  Bare in mind, that it won't take much pressure to force the float needles off their seats, allowing extra fuel into the bowls, so try to keep the pressure to a minimum or you will have fuel coming out of the over flows.

Hey John, I sent you a PM about this...Thanks

You have a PM from me as well; but I forgot to attach the illustration that may help you, so here it is.

John Luttrell
2001 VF750c Magna
http://redneckdrifter.bravehost.com/

Jim8208

Quote from: John Luttrell on July 21, 2010, 06:09:22 PM
Quote from: Jim8208 on July 21, 2010, 05:36:12 PM
Quote from: John Luttrell on July 21, 2010, 01:14:41 PM
You can try it with a bicycle pump; just disconnect the fuel line down stream of the vacuum shut off valve, then make sure there is fuel in the line and apply a small amount of air pressure to the lines.  Bare in mind, that it won't take much pressure to force the float needles off their seats, allowing extra fuel into the bowls, so try to keep the pressure to a minimum or you will have fuel coming out of the over flows.

Hey John, I sent you a PM about this...Thanks

You have a PM from me as well; but I forgot to attach the illustration that may help you, so here it is.



Thanks, I'll print this out.

John Luttrell

Jimmy, make sure the throttle cables are run over the corner of the airbox and not under it.




Also, make sure that the flat piece of the mounting bracket at the #1 carb is mounted facing down.




If all of this is correctly mounted, you may have to adjust the cables at the lower end (#1 Carb).
John Luttrell
2001 VF750c Magna
http://redneckdrifter.bravehost.com/