GSX750ES REVS SUPER HIGH AVTER INSTALLING CARBS

[Captain Chaos]

I use one of these, never fail

[Pudzrx]

I think you are supposed to unscrew them , never seen them nailed together lol.

Mp

[SATANSAM]

You might laugh, but I just bought a set of carbs for 50 pounds, full of shit, never opened....Let's see what goes on with'em XDDD

[SATANSAM]

Dammit they leak too!!! But the bike doesn't rev up...I half of the money back and kept them (They were never open)...I'm going to spray the original carbs with intake cleaner, air gun and see....They must be clogged somewhere like most of you say...No I'm going to jump from a brindge 

[BigT]

http://zeus.mtsac.edu/~cliff/storage/gs/Mikuni_BS-CV_Carburetor_Rebuild_Tutorial.pdf

CycleOrings.com

If those O rings crumbled, imagine what the other O rings look like after 35 years

If you haven't taken the carb rack completely apart, you haven't cleaned the carbs

[BigT]

https://www.gofastinnovations.com/store1/

 

https://www.amazon.com/TEKTON-2910-2-Inch-Manual-7-Piece/dp/B000NPUJYE/ref=asc_df_B000NPUJYE/?tag=hyprod-20&linkCode=df0&hvadid=309802506143&hvpos=&hvnetw=g&hvrand=8074902996176511159&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9032917&hvtargid=pla-384324752796&psc=1

 

If you're going to work on old bikes, you need some proper tools. You can likely find something similar closer to you.

 

 

[SATANSAM]

On 12/28/2020 at 12:02 AM, BigT said:

http://zeus.mtsac.edu/~cliff/storage/gs/Mikuni_BS-CV_Carburetor_Rebuild_Tutorial.pdf

CycleOrings.com

If those O rings crumbled, imagine what the other O rings look like after 35 years

If you haven't taken the carb rack completely apart, you haven't cleaned the carbs

Wow BigT thanx, this defenitly will help a lot. Many thanx!

[SATANSAM]

I was about to buy an impact screwdriver, one of those Vessel ones...I told my father and he said he had one! He had a problem with his range rover when he was about my age. I've manager to disassemble the carbs and taken the fuel pipes out...The O rings were hard and worn out...So I'm going to look for some rings valid for ethanol.  By the way, that screw grab a friend gave me really helps.

[Pudzrx]

Still got one of those in my toolbox, haven't used it for years tho.

Deffo invest in a set of Japanese jis screwdrivers

Good luck 

Puddy 

[SATANSAM]

23 hours ago, Pudzrx said:

Still got one of those in my toolbox, haven't used it for years tho.

Deffo invest in a set of Japanese jis screwdrivers

Good luck 

Puddy 

Yep, it's my next salary gift, thanx Pud!

[SATANSAM]

Well I received the new Orings to stop the leak in 2 of the carbs and they fit perfectly, I've really got to push them in not like before that they were dancing around. See the new and old oring on one same pipe. Let's see what goes on!

Cheerz amigos.

Sam.

[TonyGee]

good luck 

[fab]

that should make all the difference

lube up the orings before installing them

Edited January 7, 2021 by fab

[TonyGee]

5 minutes ago, fab said:

that should make all the difference

lube up the orings before installing them

yep, you can't beat a bit of lube on your ring 

[Gixer1460]

5 hours ago, SATANSAM said:

 

If they be flat - they be f**ked!

[SATANSAM]

Hi amigoz, 

The new Orings ond the carb work, no leaking anywhere, clean carbs...Installed them started the motor and after trying to fix the air/fuel mixture AND then trying to balance all 4 carbs, it was absolutely imposible. So, going round and round, I'm going back again and think it's an air leak in the intake manifold of cylinder number 3...Very unstable idle, low, suddenly very high, suddenly goes low and stops...I put propane right into the 3rd manyfold and it reved (Tried that before but it didn't rev because it was already too reved, I suppose I didn't do it correctly). Same manifolds on since '86  could well be the problem. Cheerz!

[Askamaskinservice]

I asked before, have you blanked off the vacuum barb on the carburator when balancing carburators?

If you have answered, just ignore.

[SATANSAM]

27 minutes ago, Askamaskinservice said:

I asked before, have you blanked off the vacuum barb on the carburator when balancing carburators?

If you have answered, just ignore.

I put a screo un the vacuum pipe as always yep! SOrry, I couldn't ignore haha

[BigT]

SO, did you replace all of the O rings in your carbs

Because the one on the mixture screw could be causing your problems

[Swiss Toni]

10 hours ago, BigT said:

SO, did you replace all of the O rings in your carbs

Because the one on the mixture screw could be causing your problems

True! And very often overlooked!

[SATANSAM]

12 hours ago, BigT said:

SO, did you replace all of the O rings in your carbs

Because the one on the mixture screw could be causing your problems

Yes, orings of all 3 fuel pipes, from 4 mixture screws and from 4 needle valves.

Thanx folx

[Shakey225]

On 1/16/2021 at 3:15 PM, SATANSAM said:

Yes, orings of all 3 fuel pipes, from 4 mixture screws and from 4 needle valves.

Thanx folx

Hi Satansam. That's some thorough work you are doing there! Where did you source the new o-rings (I am planning on a carb rebuild on my 750ES)? Cheers  

[SATANSAM]

On 1/23/2021 at 6:46 PM, Shakey225 said:

Hi Satansam. That's some thorough work you are doing there! Where did you source the new o-rings (I am planning on a carb rebuild on my 750ES)? Cheers  

Hi Shakey!

Well I bought them in a Spanish spare shop cause I live here in Spain.

Here is the link:  https://es.rs-online.com/web/p/juntas-toricas-y-sellado/1965763/?relevancy-data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searchHistory={"enabled"%3Atrue}

2mm thick and 6,5mm wide, a bit of lube like friends said up there and solved! But it will be easier to find in UK (If U R in UK of course).  Oring valid for petrol 6.5mm wide and 2mm thick.

[SATANSAM]

And now, I changed manifolds that where a bit ñasdñsadj. Carbs clean, super...BUT, when adjustIng the mixture with this Colortune from Gunson (constant blue light blablabla)...The mixture screw from Cylinder 3, the one that is giving problems, the reference carb, WILL NOT CUT THE LIGHT! It just doesn't lower the mixture like it should...Looks like BigT could well be right...I might of dismissed that blimming Oring...

 

[SATANSAM]

On 1/16/2021 at 3:14 AM, BigT said:

SO, did you replace all of the O rings in your carbs

Because the one on the mixture screw could be causing your problems

Going to disassemble them again to see if that's de cause! Good job I haven't got a gun here ARGH