Syncing 3 carbs, How?

In article <kgele0h03u67j54fd2vvcegcno9lofvs5d.TakeThisOut@4ax.com>,
"Steve Daniels, Seek of Spam" <sdaniels.TakeThisOut@gorge.net> wrote:

 > On Tue, 06 Jul 2004 09:29:52 -0500, something compelled Jeepers
 > <moomesa.TakeThisOut@INVALIDfnbnet.net>, to say:
 >
  > >Could someone have pity on me and point me to some kind of resource
  > >describing how to sync three carbs.
 >
 > Check with one or more of the British sports car groups. They do
 > this all the time.

Any one in particular? I'm not familiar with British technology and
would have no idea who has what.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Syncing 3 carbs, How? 

"Steve Daniels, Seek of Spam" <sdaniels.RemoveThis@gorge.net> wrote in message
 >
 > Check with one or more of the British sports car groups. They do
 > this all the time.

Yes. Unfortunately, most folks who've invested much time in working on a
triple rack of SU carbs are now living in "special homes", mumbling a lot,
with oatmeal dribbling down their chins. <!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Syncing 3 carbs, How? 

"Jeepers" <moomesa.TakeThisOut@INVALIDfnbnet.net> wrote in message news:moomesa-
 >
 > Any one in particular? I'm not familiar with British technology and
 > would have no idea who has what.

Do a quick google under "British sports car" or "SU carburetor".<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Syncing 3 carbs, How? 

In article <bd2dnbQIvurlXnfdRVn-sA.DeleteThis@comcast.com>,
"John Gaquin" <john.gaquin.DeleteThis@comcast.net> wrote:

 > SU carburetor

???

What does this mean?<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Syncing 3 carbs, How? 

In article <moomesa-0C0EEB.10361006072004 RemoveThis @corp.supernews.com>,
Jeepers <moomesa RemoveThis @INVALIDfnbnet.net> wrote:

 > In article <bd2dnbQIvurlXnfdRVn-sA RemoveThis @comcast.com>,
 > "John Gaquin" <john.gaquin RemoveThis @comcast.net> wrote:
 >
  > > SU carburetor
 >
 > ???
 >
 > What does this mean?

Nevermind, I found it. However, I'm not too sure I have three of these.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Syncing 3 carbs, How? 

Mercury vacuum gauges, as used on multi cylinder motorcycles.

Its basically 4 rod vacuum gauges affixed side by side. You attach the line
to the provided vacuum ports on the carbs (behind the throttle plates), then
while running the engine, adjust the plate(s) so that all 3 gauges read the
same.

Adjust curb idle as needed...done.

Check you local motorcycle tool shop.

--
"Do or do not...there is no try"

Yoda- 1981
"Jeepers" <moomesa DeleteThis @INVALIDfnbnet.net> wrote in message
news:moomesa-E7C726.09295206072004@corp.supernews.com...
 > Could someone have pity on me and point me to some kind of resource
 > describing how to sync three carbs.
 >
 > I goofed and turned the screws on my Force 85's carbs instead of the
 > manifold mounting screws (long story, suffice it to say I wasn't paying
 > attention). I heard something about listening through a hose or
 > something once before, but I have no idea what I'd be listening for. I'm
 > handy with tools and have a workshop (I live on a ranch, it's a
 > necessity). I've worked on pletny of things from shredders to tractors
 > and Jeeps and lawn mowers, but none of them have 3 carbs!<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Syncing 3 carbs, How? 

In article <ccen38$fst$1@charm.magnus.acs.ohio-state.edu>,
"Sam S." <Seymore RemoveThis @ATT.nospam.COM> wrote:

 > Mercury vacuum gauges, as used on multi cylinder motorcycles.
 >
 > Its basically 4 rod vacuum gauges affixed side by side. You attach the line
 > to the provided vacuum ports on the carbs (behind the throttle plates), then
 > while running the engine, adjust the plate(s) so that all 3 gauges read the
 > same.
 >
 > Adjust curb idle as needed...done.
 >
 > Check you local motorcycle tool shop.

Sounds easy enough! Thanks!<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Syncing 3 carbs, How? 

On Tue, 06 Jul 2004 09:29:52 -0500, Jeepers <moomesa RemoveThis @INVALIDfnbnet.net> wrote:

 >Could someone have pity on me and point me to some kind of resource
 >describing how to sync three carbs.
 >
 >I goofed and turned the screws on my Force 85's carbs instead of the
 >manifold mounting screws (long story, suffice it to say I wasn't paying
 >attention). I heard something about listening through a hose or
 >something once before, but I have no idea what I'd be listening for. I'm
 >handy with tools and have a workshop (I live on a ranch, it's a
 >necessity). I've worked on pletny of things from shredders to tractors
 >and Jeeps and lawn mowers, but none of them have 3 carbs!

I use "Carb Stix" to synchronize the carbs (2) on my motorcycle. You might check
a motorcycle shop for some help.

John H

On the 'Poco Loco' out of Deale, MD,
on the beautiful Chesapeake Bay!<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Syncing 3 carbs, How? 

Loosen all the linkage screws on the side of the carbs. With the throttle
at idle position, all the throttle plates should be down against the body.
Tighten all the linkage screws.
Now open the throttle to wide open and verify all throttle plates are
setting flat.
If one is out slightly - loosen and adjust to flat as the others.
Now back to neutral and verify all plates are the same.

Very simple on these engines.

--
Tony
my boats at <a style='text-decoration: underline;' href="http://t.thomas.home.mchsi.com" target="_blank">http://t.thomas.home.mchsi.com</a>

"Jeepers" <moomesa.TakeThisOut@INVALIDfnbnet.net> wrote in message
news:moomesa-E7C726.09295206072004@corp.supernews.com...
 > Could someone have pity on me and point me to some kind of resource
 > describing how to sync three carbs.
 >
 > I goofed and turned the screws on my Force 85's carbs instead of the
 > manifold mounting screws (long story, suffice it to say I wasn't paying
 > attention). I heard something about listening through a hose or
 > something once before, but I have no idea what I'd be listening for. I'm
 > handy with tools and have a workshop (I live on a ranch, it's a
 > necessity). I've worked on pletny of things from shredders to tractors
 > and Jeeps and lawn mowers, but none of them have 3 carbs!<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Syncing 3 carbs, How? 

In article <rLzGc.17379$JR4.9020@attbi_s54>,
"Tony Thomas" <t.thomas.RemoveThis@mchsi.com> wrote:

 > Loosen all the linkage screws on the side of the carbs. With the throttle
 > at idle position, all the throttle plates should be down against the body.
 > Tighten all the linkage screws.
 > Now open the throttle to wide open and verify all throttle plates are
 > setting flat.
 > If one is out slightly - loosen and adjust to flat as the others.
 > Now back to neutral and verify all plates are the same.
 >
 > Very simple on these engines.

Thanks! I noticed the bottom carb was not closing all the way, and I did
exactly what you suggested (it was a guess).

Somewhere I read that you could listen to the carbs through a hose. I'm
not sure why. But I tried it anyway. What I heard was the bottom one
making a more pronounced fluttering sound than the top two. What could
this be? A valve or something? Or the carb?

Would you mind helping me with another question?

I was taking the carb intake box off, while my wife was standing there
chattering at me, and therefore I stuck my screwdriver in and started
backing out the carb adjustment screws! I, apparently, thought I was
removing the airbox screws. I'm guessing these were either idle or
something else - screws. So I screwed them in gently and backed them out
2 turns, each carb. It starts and idles, but backfires and dies suddenly
if I run it up. I dunno, I goofed, and 3 carbs is a new thang fer me. I
can handle it, I just need guidance. I ordered a motor service manual
from iBoat yeaterday, but it won't arrive until the end of the week.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Syncing 3 carbs, How? 

My Mercury shop manual says you simply set them up so all the throttle plates
are seated in the idle position and that they all start to open at the same
time. That was the way the dealer mechanic did it when he set them up too. I am
not sure there is a port to vacuum test them on a Merc.
 >> Stay informed about: Syncing 3 carbs, How? 

In article <20040706153958.11526.00000928 RemoveThis @mb-m23.aol.com>,
gfretwell RemoveThis @aol.com (Greg) wrote:

 > My Mercury shop manual says you simply set them up so all the throttle plates
 > are seated in the idle position and that they all start to open at the same
 > time. That was the way the dealer mechanic did it when he set them up too. I
 > am
 > not sure there is a port to vacuum test them on a Merc.

Now that you mention it I'm not sure either.

What I need to know is how far the screws (near the mouth) need to be
backed out.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Syncing 3 carbs, How? 

I seem to remember the starting point on the idle screws was 1 1/4 out, then
you adjust from there. I have been on a 60 EFI 4 stroke for 2 years now but I
had the old 3 carb 2 stroke 75 for 12 years.
 >> Stay informed about: Syncing 3 carbs, How?