Idle Speed with choke on

[jscgdunn]

Great clarity from Noel and Pat on riding "warm-up".  I have a BMW M5 with a 5 litre V10.   On this car the redline is quite low at cold temps and actually moves up until the oil temp gets to operating range.  The operating redline (when warm) is 8250 RPM.  As Noel points out this take about 10 KMS of easy driving.....then if you push the M (which I think stands for more Money) button you can unleash it.  Kookaloo with a V10 here we come....

Jeff

[FJmonkey]

Thanks for the reply. The K&N is a cartridge type in the original air box. I'm not a fan of K&N filters & usually run UNI filters.

I have some hollow ground gunsmithing screwdrivers that fit jets well, along with the JIS drivers.

Sounds like you are handy with tools.

To get the air box off you will need to remove the upper bolts that hold the rear subframe on and pivot it down and away from the air box. Then you can wrassle it out, its up to you if you want it back in. I enjoy the extra room and ease of access with the UNI pods.

[simi_ed]

Good on-ya for having the JIS screwdrivers, --BUT-- spend the $20-22 on the SS screw set.  The OEM screws are shit! And will strip, even with the right tools. The SS screws will not and you forever will not have to worry about having the JIS set as parts of your road toolkit.  Also, if you have the ethanol infested fuel in your area, I'd order 2 sets of pilots so you can always have a fresh set ready to drop in --when-- (not IF) they plug.

My 2¢, as an early adopter of #40 pilots.

Ed

[~JM~]

Thanks for the tips.

I'm fortunate to have 1 filling station nearby that sells "Clear Premium" that is ethanol free. I usually add some fuel stabilizer & a dash of 2-stroke oil on fill up. I try to keep the tank topped off before storing. It bothers me that I do not have manual control or access to the fuel petcock. I like to close the petcock & run my bike until the bowls run dry. Can't do that with my FJ.

[simi_ed]

If your FJ has a fuel pump a toggle switch in the wire to the pump would do the trick ...

Good deal on the "real" fuel.  Here in Kalifornia we used to only get the euthanized (ethanized?) fuel in the winter, until "the powers that be" decided that we really need it all year round.  So, one has to be careful to keep Startron or a similar product in the tank, lest the spare jet rule be invoked.  Kinda tragic when you actually get pretty good at a jet swap.

[FJ1100mjk]

If your FJ has a fuel pump a toggle switch in the wire to the pump would do the trick ...

I would think that the pump has a electrical connector. Can't you just disconnect it, so the pump won't run?

I only have gravity-fed FJs. I have no knowledge of the fuel pump types.

[FJmonkey]

If your FJ has a fuel pump a toggle switch in the wire to the pump would do the trick ...

I would think that the pump has a electrical connector. Can't you just disconnect it, so the pump won't run?

I only have gravity-fed FJs. I have no knowledge of the fuel pump types.

84/87 petcocks are easy, unplug the vacuum line to drain the carbs... No Vac, no fuel from the tank...

[~JM~]

If your FJ has a fuel pump a toggle switch in the wire to the pump would do the trick...

I hadn't even thought about that. Good idea!

Other than hearing the pump kick on when I start the bike, I forget that it's there.

Thanks.

[Bones]

It bothers me that I do not have manual control or access to the fuel petcock. I like to close the petcock & run my bike until the bowls run dry. Can't do that with my FJ.

If you've got a fuel pump you should have a petcock you can turn off, otherwise how would you change fuel filters without fuel going everywhere. On my 93 you lift the back of the tank up and with a 8mm open end spanner turn the little square fitting on the petcock 45deg to turn off.

[~JM~]

It bothers me that I do not have manual control or access to the fuel petcock. I like to close the petcock & run my bike until the bowls run dry. Can't do that with my FJ.

If you've got a fuel pump you should have a petcock you can turn off, otherwise how would you change fuel filters without fuel going everywhere. On my 93 you lift the back of the tank up and with a 8mm open end spanner turn the little square fitting on the petcock 45deg to turn off.

I'm aware of the petcocks location. I don't really want to pull the tank after every ride.

[wildfire]

[/quote]

I'm aware of the petcocks location. I don't really want to pull the tank after every ride.
[/quote]

I put a second petcock valve in the fuel line so all I have to do is take the seat off. No need to remove tank.

[~JM~]

Now that's a good idea. Thanks.

[ribbert]

Thanks for the tips.

....... I like to close the petcock & run my bike until the bowls run dry. Can't do that with my FJ.

Why and how?

Do you judge how far from home and shut off the fuel then splutter into the drive or leave an already hot motor idling, getting even hotter and leaner until it dies one cylinder at a time?

Mostly, I'm curious why you do this.

IMO dried out carbs get scale, shrinking gaskets, hardened seals and sticking needles.

Noel

[~JM~]

I usually close the petcock on whatever bike that I'm riding about a block away from home. Usually I sputter into the driveway, or it will run out shortly thereafter. Prevents varnish & crap from plugging the internal carb circuits. I've done this for years & haven't had to clean out a carb since then. This is especially important if your fuel has ethanol in it. Ethanol attacks aluminum.

Here are a couple of links that will help you to find ethanol free fuel in your neighborhood.
http://www.buyrealgas.com
http://pure-gas.org

[Pat Conlon]

John (JM) you know that your procedure still leaves ~1/2" gas in the fuel bowl? The fuel level just drops below the pilot/main jets when the engine sputters.

Your procedure does get some separation between the fuel and jets but, the choke circuit pickup at the bowl bottom is still subject to clogging.
The only way to completely dry the bowls out is to use the drain screws at the bottom of the body of the bowl.

Yes, nasty green crap grows in stored ethanol laced fuel.

Cheers