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 How To Tune Air/Fuel Ratio (4G13/4G15 Carburetor), Need ur help guys

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sinister_sid
post Apr 15 2011, 12:46 AM

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unker fred is right
i olso diy open pod
respond good but top speed crap
change back closed factory still the best
what not open pod sucking all the hot air and the air ram paip lenght so damm small so restrict air speed
sinister_sid
post May 10 2011, 06:04 PM

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QUOTE(siqplus @ May 10 2011, 01:36 PM)
guys,
my car (old satria 1.3 carb) eat

Before tune = RM70 of ron95 petrol for 350km.
After tune = RM70 of ron95 petrol for 423km.

17% improvement.

Just want to ask, what the average fuel consumption for satria 1.3 carb? stock one.
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my saga 1.3 year 91
65 buck = 449 km
sinister_sid
post Oct 24 2012, 01:04 AM

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QUOTE(LionelStep @ Oct 24 2012, 12:32 AM)
Hi forumner,  for the picture shown, please teach me how to access the 4G13 throttle body - throttle plate (or also named as throttle buttlefly valve), which are the screws or  items  to be removed or dismantled?  Thanks !
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a efi system throttle body or a carburetor throttle flap ?
sinister_sid
post Oct 24 2012, 09:02 PM

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u flip the carb upside down u can see the butterfly , two screw that hold it , need impact screw to remove the screw , and to take the shaft out u have to basicly dissassemble the entire carb
sinister_sid
post Oct 25 2012, 02:35 PM

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yes u can get accsess to the butterfly at the bottom , if u wanted to clean it i dont see the need to disassemble the butterlfy , just a simple turn of the spindle u can clean the entire butterfly
sinister_sid
post Oct 30 2012, 03:27 AM

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QUOTE(LionelStep @ Oct 30 2012, 01:07 AM)
Please advice what are the ways to access to the throttle butterfly valve if I do not remove the 4G13P carburetor  from the car ?  Thanks ~~
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no other way , simple solution , use carburator cleaner to get ur butterfly clean of dirt and carbon
sinister_sid
post Oct 30 2012, 08:40 PM

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QUOTE(LionelStep @ Oct 30 2012, 08:39 AM)
1.    Please advice, can we just spray carburetor cleaner into the 4 holes in yellow of the picture?

2.   And secondly, in case I still want to attempt to access the throttle butterfly valve without taking out this carburetor from the car, can I just remove the 2 screws in red circle in the picture (and plus one more screw under which cannot be shown on the carburetor view), only 3 screws,  then I can remove the front housing, and access to the throttle butterfly valve ?
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u spray carburator cleaner with engine running , the cleaner will be suck by the induction along with the dirt , u will get a clean surface , yes u can spray inside the breather hole and air bleed hole , and result to flooded system and make ur engine hard to start

removing the front screw will gain u access to the variable ventury piston housing and the piston itsself and to remove the piston u have to take out a screw on the top , yep it will gain u alittle access to the buterfly , but with the risk of spring falling into the intake manifold , that time it will be fun rclxm9.gif


Added on October 30, 2012, 8:44 pm
QUOTE(calvin @ Oct 30 2012, 09:47 AM)
as per the thread title.. where am I able to find someone to tune my 4G13 carb ? unsure.gif
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pmed you smile.gif

This post has been edited by sinister_sid: Oct 30 2012, 08:44 PM
sinister_sid
post Oct 31 2012, 08:27 PM

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QUOTE(Quazacolt @ Oct 30 2012, 11:25 PM)
anyone can confirm on this?
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yes , the upper is idle jet screw mixture , bottom is main jet screw mixture , to adjust idle to 2k / 3k afr u have to fiddle with the idle jet , beyond that is main jet

 

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