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Pod filters question...Carb Jetting...etc

  • Thread starter Thread starter havoK
  • Start date Start date
It looks like part of your emulsion tube is broken off or something. I'd get that carb apart and find out what's going on. If it's not the same, it needs to be.
 
ok, pulled the plugs today, and they are definately running too lean (mostly white/little color), so its gonna be set to richen the mix...
gonna run 120s/122.5s main jets...17 pilots, and set the needles to 4...
hopefully that should fix... :)

cafe kid...any ideas for replacing the emulsion tube? (does it thread into the carb?)(where can i find one?)
 
I went back to the cleaning/carb rebuild, and I changed a few things... Main jet is now a 117.5, pilot is now a 17.5....and the air screws to be dialed in at the end (3/4 to 1 1/4)...needles set to 4th position, and I am getting the needle jet (pulled it up on microfilm to find it), which is what is missing in the pics below...not an emulsion tube,
PO had lost one, and thats why my bike was giving me fits in the idle, running and hopefully resulting performance...
I will also be synching carbs before I am done, so we should be past the carb fun for a bit...
Many thanks to all who had a large helping hand in getting things back together...I can't thank some of you enough... :)
Next stop...valves/pistons/gaskets and shims.... :)
 
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did you look at the pics?...NOT the same thing, and definately missing one...
I looked at the microfilm, and the part I am missing is a seperate piece...its in the pics below...i have all four of the emusion tubes, this is a piece that is above it...(sticks up into the intake)
 
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Just checked Sudco and it looks like that part may no longer be available. You might need to post in the wanted section to see if anyone has parts to spare.
 
Hi,

Are you missing #15?

2133_12.gif


#14= 09494-00182
..JET, NEEDLE

#15= 13385-45010
..PIPE, BREADER ......(I think this may be misspelled, "Breather Pipe")

#16= 13246-43010
..O RING

#17= 09491-20003
..JET, MAIN
(#100)

If you are missing #15, they are still available OEM from most online Suzuki parts vendors. Partshark.com has them for $26.78.


Thank you for your indulgence,

BassCliff
 
#14 on that diagram, it was labelled #16 on the 1978 Gs 750e microfilm I saw...but its the needle guide, needle jet at the top...
 
I got a friend looking though a bin of carb bodies to see if he has the part I need, if not I will def order one through the links posted... :)
 
BassCliff, the first post is stating that the part is obsolete... :(
the second has $9.75 shipping rate, but I bet they have it...lol
I just hope I find another carb set, then I can skip this stuff in the future... :)
 
Was reading thru this thread and found the jets on Z1 and wanted to confirm that for my 1978 GS550E with Mikuni VM carbs that they will fit. New to all this stuff. I'm going to take the same recommendations noted above

going with pilots 17.5 & mains 125. although, I will order a plus & minus size since they are so cheap.

But, just curious if these are what i need. well, maybe not this high of a jet, but these in general.
http://www.z1enterprises.com/searchresult.aspx?All=True&KeyWords=jets

I forgot to mention. I do have pod filters and a 4 to 2 baffleless exhaust.
 
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You link goes to a bunch of carb rebuild kits. Don't use those.

According to the stock specs your bike starts out with an 80 main and 15 pilot. Not sure that you need such a huge jump in the main jet size. 17.5 pilots are worth a try.
 
MisterCinders said:
You link goes to a bunch of carb rebuild kits. Don't use those.

According to the stock specs your bike starts out with an 80 main and 15 pilot. Not sure that you need such a huge jump in the main jet size. 17.5 pilots are worth a try.
Click to expand...

oh, weird, I posted links to main jets & pilot jets only. I think that has happened before. So, I know for sure that it has 90 main jets now. SHould I need to go up higher? Anyways, I'm mostly having issues while idling. it varies between 900-1500 rpm and just sounds like it wants to quit. I guess that problem only has to do with my fuel mixture screw?
 
MisterCinders said:
You link goes to a bunch of carb rebuild kits. Don't use those.

According to the stock specs your bike starts out with an 80 main and 15 pilot. Not sure that you need such a huge jump in the main jet size. 17.5 pilots are worth a try.
Click to expand...
I see what happened. It went to page 1. I tried to post page 4 of that section.
 
Just guessing, mind you, but if your bike came with 90 mains, and you now have pods and baffle-less 4-into-2 pipes :eek:. you will probably need something in the 100-110 range for your mains. Only your spark plugs will tell you for sure, when you do your plug chops.

Your idle mixture could be a problem. Try running the pilot fuel screw (the one on the bottom) about 1 full turn out from lightly seated. Set the air screw (the one on the side) double that for a starting point, then tweak it for best idle when the engine is warm.

Of course, this assumes that the carbs are clean and the intake boot o-rings are in good shape.

.
 
Steve said:
Just guessing, mind you, but if your bike came with 90 mains, and you now have pods and baffle-less 4-into-2 pipes :eek:. you will probably need something in the 100-110 range for your mains. Only your spark plugs will tell you for sure, when you do your plug chops.

Your idle mixture could be a problem. Try running the pilot fuel screw (the one on the bottom) about 1 full turn out from lightly seated. Set the air screw (the one on the side) double that for a starting point, then tweak it for best idle when the engine is warm.

Of course, this assumes that the carbs are clean and the intake boot o-rings are in good shape.

.
Click to expand...

Yeah, the carbs have actually been completely rebuilt. I had a fuel mixture screw issue in which the tip broke off. fixed that. have been confused about the setting on that one though. It started out with #80 main jets and was worked up to #90. still fine tuning since it does have the pods and exhaust modified. intake boot rings are brand new and not overly titghten as suggested.

Let me ask this......SHould the, don't know if I'm calling this the right thing, throttle screw on top of the carbs always have some pressure to adjust idle?
 
Paul's Zuki said:
Let me ask this......SHould the, don't know if I'm calling this the right thing, throttle screw on top of the carbs always have some pressure to adjust idle?
Click to expand...
That would be the "idle speed adjustment" screw. :o

Yeah, there should be some 'pressure' on it. If you back it off completely, the engine should slow down and die.
Can't tell you how far it needs to be open, only that it needs to be open "enough".

Most of the 4-cylinder bikes have suggested idle speeds of about 1000-1100, the twins are just a bit higher, about 1200.

.
 
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