Carburetor Section

Deadnight

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Deadnight

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fellas.. do you guys know what year was the last engine Mitsu produce for the 4g91 carb.. in other words.. how old is the engine..

and how do i know how old is my engine?
 

SkYwAlKeR

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SkYwAlKeR

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fellas.. do you guys know what year was the last engine Mitsu produce for the 4g91 carb.. in other words.. how old is the engine..

and how do i know how old is my engine?
if ur car havent transplanted any engines yet, ur engine is as old as ur car... but the technology is of coz much older than ur car....

as for what year is the last batch of mitsu 4g91 carbs, i not sure...
 

Deadnight

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Deadnight

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another question..

i bought the 91 carb with computer box.. installed it to my car with the comp box..

so wat does the comp box actually do for the 91 carb? what is its function?
 

faeizal

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faeizal

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hpe to find some answers here...

dunno why but sometimes my car act weird... happened today...

idling becomes erratic... stop at junction and the car dies off... after green light rev a bit but the car was like choking for abt 200 meters before it surprisingly operate normally... drove for a while and it was ok....

but then... when i was negotiating a very tight bend (almost like a u-turn)... dropped 5th to 4th gear... and the car started choking again... was doing about 80km/h that time..

why may be the problem...

distributor?
carbie?
coil?
 

fstr

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fstr

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fuel pump, petrol filter, petrol hose, distributor...

fm your description, there isnt enough fuel being feed to da carb..
 

faeizal

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faeizal

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fuel pump, petrol filter, petrol hose, distributor...

fm your description, there isnt enough fuel being feed to da carb..
did clean the distributor coz found some trace of oil in it... petrol filter is new (4 months old)... will check the other...

i'm planning to hv the carbie serviced... in such a thing... what will they do actually... out of curiousity...
 

fstr

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fstr

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serbis carb is very vague by some foremans, they will just spray inside and then close it with the palm and rev it 9 9... thats easy for them cos some just plain dont like to clean a carb.

for those mechs who really cleans it, they will dismantle inside out of the carb to check everything.
 

faeizal

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faeizal

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fstrader... how much will it cost actually to tear apart the carbie plus servicing...???
u know any reputable place to do this...???
 

Darth

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Darth

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skywalker....sume oem carb from japan wan were equipped with computer box...but the correct term is CPU-carburetor Program Unit.....i've seen it....the purpose of it is can alter AFR byit self using the input from EGT...
...thats why if,using the carb without the electronic thingy...your afr willrich and suffer on hi petrol lor....i've been on that situation(been there,done that..hehehe)...lastly fedup...using carb that no need electric thingy...let say like weber.....hehehehe....
 
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SkYwAlKeR

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SkYwAlKeR

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skywalker....sume oem carb from japan wan were equipped with computer box...but the correct term is CPU-carburetor Program Unit.....i've seen it....the purpose of it is can alter AFR byit self using the input from EGT...
...thats why if,using the carb without the electronic thingy...your afr willrich and suffer on hi petrol lor....i've been on that situation(been there,done that..hehehe)...lastly fedup...using carb that no need electric thingy...let say like weber.....hehehehe....

ohh.... soli soli... i still using stoneage carbs...

but i've read about holley carbs before... their carbs have computer box... not sure what they control though....
 

shah5755

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shah5755

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adjust throttle cannot increase power... can increase throttle response only...
u wanna mod ur ori carb to increase engine performance, find unker fred... he can help u...[/QUOTE]

who is unker fred hehe i'm in kch so can he help :rolleyes: my fren suggest to change it to 4 throttle so anybody hv xperince???
 

amrancharger

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amrancharger

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er..can i ask sumthg?can carb cars used the iridium sparkplugs?a fren of mine said iridium is not suitable for carb engine...izit thru??
 

SkYwAlKeR

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SkYwAlKeR

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who is unker fred hehe i'm in kch so can he help :rolleyes: my fren suggest to change it to 4 throttle so anybody hv xperince???
unker fred is fstrader... zth forumer....
4 throttle is for fuel injection lar.... or what ur friend meant was twin carb??...

er..can i ask sumthg?can carb cars used the iridium sparkplugs?a fren of mine said iridium is not suitable for carb engine...izit thru??
absolutely wrong... any car can use iridium plug... ignition and carburetor doesnt interfere with each other....
 

fstr

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fstr

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huhu...i can guide on how to save fuel on oem proton carbs laa but mod that one lain cerita laa, salah disisi undang undang maa :biggrin:
 

Darth

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Darth

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aiyah..unker been there,done that..summore salah disisi undang2...cheh....law were mean to be broken only by human...not kambeng....lor...hahahhahaa....nakal okeh....jahat tak boleh...hehehehehe
 

fstr

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fstr

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aiyah..unker been there,done that..summore salah disisi undang2...cheh....law were mean to be broken only by human...not kambeng....lor...hahahhahaa....nakal okeh....jahat tak boleh...hehehehehe
oik...mau kena ahh?? :biggrin:
 

fstr

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fstr

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i have a 4g15 saga oem carb for sale, who wants ahh??

cheap cheap let go at rm 280, if wanna mod for save petrol add rm 20, if wanna mod for performance add rm 50 :biggrin: