afm flap adjustment

[McFir7]

today i decided to clean up my afm as i seen someone posted here on how to open n clean it..i try to open the bottom metal cover but i failed..the screws it too tight in,i have try using wd40 but i doent work.so i decide to leave that to mechanic to help me out as my afm is nvr been open in anyways..so since i cant do that,i move on to clean the inside air goin thru tunnel.i did some sand paper in it.now is smootly flapping than b4.but the i feel the tension is bit hard..so what i did was pop up the black top cover n clean it..also turn right(anti clockwise) by only one click..fix all back..driving around at low n high speed seems to be better n more responsive.but i would like to know do anyone here know how to set the flap at the best tension.i was searching on net mostly only shows bout the afm like m20 (the ones have screw at the top to adjust the air fuel ratio).what i was lookin for how to adjust the best tension flap..any idea guys?thank u..

 

[jarance]

try this to open the cover. it work for me. I try this method on Russie AFM and it wont budge. I replace the screwdriver with a 17 size spanner and the cover came off.

Here how it is done.. Lever principle. (picture from Russie)

 

[McFir7]

thanx bro for ur fast respond..but my 1st problem was that i couldn open the part that u r showin, is that i cant even unscrew those little screw around it..is so tight..i deep put wd40 n force it.but it turn to be the screw gettin worn out..so what should i do?

second thing,do u know how to set the flap tension at the right rate?(number of clicks n which direction)

 

[jarance]

thanx bro for ur fast respond..but my 1st problem was that i couldn open the part that u r showin, is that i cant even unscrew those little screw around it..is so tight..i deep put wd40 n force it.but it turn to be the screw gettin worn out..so what should i do?

second thing,do u know how to set the flap tension at the right rate?(number of clicks n which direction)

You got to use a good correct size philip (+) screwdriver or you will damaged the screw head. if it is damaged you can try to use the impact screwdriver. or try to cut across the screw head with a miniature saw and use a minus (-) screwdriver. Again, try find a (-) screwdriver which will fit the slot to open the screw. BTW, did you remove the silicon that was covering the screw?

Sorry, never play with flap tensioning part cos it seldom give any trouble.

impact screwdriver.

 

[McFir7]

thanks again bro for ur respond..i had remove the glue..even try to hit up the screw using solder iron has i read somewhere saying i might work lossening a tight screw by heat it up..i will try ur method today..

 

[jarance]

thanks again bro for ur respond..i had remove the glue..even try to hit up the screw using solder iron has i read somewhere saying i might work lossening a tight screw by heat it up..i will try ur method today..

Heating up a screw will not work. When the screw is heated up, it will expand. When it expand it will be more tighter. maybe it will melt the glue but I dont think any glue or locktight was used during the fastening of the screw.

Find a good set of screw driver. press hard vertically and turn anti-clockwise in one go. it will unlock the screw.

make sure that the AFM is mounted a piece of cloth to prevent it from slipping.

 

[zekm59]

I like by the way JARANCE style...... helpful... tahniah

 

[zekm59]

afm flap ajustment... i need to know, for what? because, i just bought i unit second hand from kedai potong, but my engine still not stable.. injured..

 

[jarance]

afm flap ajustment... i need to know, for what? because, i just bought i unit second hand from kedai potong, but my engine still not stable.. injured..

Idling speed unstable can be caused by many things:-

1. AFM sticky vane
2. ICV faulty
3. Vacuum hose leaking
4. spark plug worn out
5. fuel filter chocked

 

[Russie]

Jarance's method is by far the best we've seen so far. He managed to pry open my AFM effortlessly. Just make sure u remove all the small screws and use a pen knife to cut open the silicone glue by slicing between the gap.

 

[McFir7]

thanks to all for being so helpful..after sometime the afm tension might not be right..so u need to adjust it..

i did mark it b4 i adjust it..i just turn clock wise,by only one click..now it seem more better respond..smooth idle thru out the range..but will be more better af ratio if u adjust the arm inside as well but must be monitor the adjustment by using gas analyzer...then u will get it perfect..

the most important thing.the have circle inside that contact wit the afm arm should be gentle it clean wit a cotton bud, use bit alchohol or carb cleaner..

after doin all this..i manage to solve to erase the afm fault code from appearing..

still haven got chance to open the bottom cover yet..

 

[jarance]

Just in case, those who want to see the inside of the AFM as describe by McFir7.