how to adjust air fuel ratio

[fstr]

1) yes.... 4g15 n 4g13 using the same carb....

2) jeng jeng jeng...

3) screw in means clockwise... similar to water pipe... wanna close the tap (lean mixture), u turn clockwise....

4) the workshop usually tune my carb and ignition timing only charge me 5bucks... other workshop i dunno... but shouldnt be expensive....

hmmm this photo very familiar :X-:

 

[SkYwAlKeR]

yalor... vr familiar.... whose one arr, unker fred??....

 

[DareDan]

can we just adjust the distributor and tune down the timing screw on the back of the carb?

 

[SkYwAlKeR]

can we just adjust the distributor and tune down the timing screw on the back of the carb?

cannot ler... adjust distributor is to adjust the ignition timing... nothing to do with the carb AFR... carb AFR is set from behind (facing the firewall), as shown in the pic...

 

[DareDan]

cannot ler... adjust distributor is to adjust the ignition timing... nothing to do with the carb AFR... carb AFR is set from behind (facing the firewall), as shown in the pic...

oo..ic....thanks bro....

 

[fendy5479]

hi sifus, nooby here...
so where is the idle speed screw?? not the a/c off idle screw?

 

[SkYwAlKeR]

hi sifus, nooby here...
so where is the idle speed screw?? not the a/c off idle screw?

what carburetor??...

 

[fendy5479]

what carburetor??...

wira 4g15, as in the picture above...

 

[SkYwAlKeR]

wira 4g15, as in the picture above...

so??.... since its as the picture above, u still dont know where is the screws located??...

 

[fendy5479]

in the picture show only the a/c off idle screw, a/c idle screw and air/fuel ratio screw... so which one is the idle speed screw?

 

[SkYwAlKeR]

idle speed screw = a/c off idle screw

u've jz made me speechless....

 

[fendy5479]

ayo.. confuse laa. u wrote this..

Originally Posted by papagoines
one question thought....
idle speed screw = air con off idle screw?

Originally Posted by SkYwAlKeR
not same.... there is 2 separate screw to control it....


anyway, thnx man...

 

[SkYwAlKeR]

since when i said that??... hmm..

anyway, idle speed screw got 2... 1 is for aircond off, and another is for aircond on... thats why u can have 2 separate idle rpm for aircond on and off...

 

[escaping]

si fu.. how about nissan sunny E11 engine punya stock carbie screw? my car running wif a bit white smoke n dense gas smell..
FYI i just changed the air filter but my rpm decreased below 500.. if turn on the air cond then will be fine..
if i off air cond + on head lamp.. car stop...

 

[SkYwAlKeR]

si fu.. how about nissan sunny E11 engine punya stock carbie screw? my car running wif a bit white smoke n dense gas smell..
FYI i just changed the air filter but my rpm decreased below 500.. if turn on the air cond then will be fine..
if i off air cond + on head lamp.. car stop...

white smoke??... piston ring gone??.. need overhaul??...
if piston ring KO, does it mean static compression is lower than usual??... does this translate to lower idle rpm??..

sifoo sifoo help guide noobie here...