18rc carby issue

[allencr]

Just adjust it! After seeing that all the linkages work smoothly.
A couple of screws on its cover to loosen, turn it so that it is fully open when warm, or closed when cold, and that's it.
Then the fast idle cam/idle step up screw, and maybe it might have some kind of pull off that you'll have to figure out.
That'll be better then what you've got it adjusted to right now, and won't need more then 1 or 2 trys to fine tune it after a hot/cold cycle or 2.

[Hash_ra23]

hi,
i've rebuilt the carb and put it back on the car now but im having trouble starting it. I've checked spark and fuel and cleaned up plugs and points. I used some aerostart and it started for a bit, but as soon as i opened the thottle a bit it died. I'm pretty sure the carb has been connected up properly.

The only thing i really changed wus the float valve. I adjusted it by turning the top of the carb upside down, and making sure the float wus parrallel by sitting there under gravity. I also blew into the fuel inlet while upside down and it wus closed. Before i adjusted it was way off and i drew a diagram of how it was (bottom).



so i adjusted it a great deal to get it looking like the top. After putting it back on the car and cranking it, however, the fuel level is much higher than the sight glass. So i'm thinking the float chamber is filling up too much and the engine is getting flooded.

Could this be the reason? and have i adjusted the float incorrectly? Before i adjusted it the car started pretty much straight away.

Keep in mind the car hasn't been started in 9 months. I put in new fuel but it mite be running on old fuel still.

[MWP]

Yup, fuel in the bowl should be level with the center of the window.

[Hash_ra23]

Could having it alot over cause it to not start? Or should it start and just run rich?

[glytch]

The level of fuel in the bowl has no effect on the running/idling of the car. It only comes into play with cornering, if it is too low you could run out of fuel on a corner, if it is too high you can have issues with it spilling.

Basically - its not a finely tuned thing. just a rough approximation is ok.

[Mr_Toyota]

On the same topic of 18r's and carbies

Just fitted a 32.36 weber in my hilux, now the carby is second hand and was said to be off a runing 18r previously,

Whats a rough guide to getting it to start?...Jet sizes ect,
And if the carby is connected properly it should start pretty easy?

Just asking before i go turning the key....!

[mike1980ra40]

hi,
i've rebuilt the carb and put it back on the car now but im having trouble starting it......

Hi there

Did you use one of those rebuild kits part no. A10L that replaces AN-111 for Aisan carbys?

If you did, on the bottom right corner of the sheet that comes with it, it shows the float
level of 7.1mm and from my experience found that level way too high.
the diagram you drew, the top float level is closer to what it should be.

screw in the mixture screw all the way then go back 1 and a half turns, then hold the choke
open when starting

[mike1980ra40]

On the same topic of 18r's and carbies

Just fitted a 32.36 weber in my hilux, ........ And if the carby is connected properly it should
start pretty easy? ... !

should start fairly easily, mind you with extractors on an 18R-C theres no pre-heating for the
inlet, so in colder weather it may be a tad more difficult to get going. my solexs are a
bitch in the cold ;-)

[Hash_ra23]

Well i just took the carby off and the intake had about half a centimetre deep of petrol .
And when i opened the throttle petrol just drizzled out. Could it be something else other than the float because i dont think the float valve is working and petrol is just constantly going in.

Yes i think thats the rebuild kit i have, Mike, but i did adjust it so it looks like the top of the diagram.

The float needle in the rebuild kit wus a bit different to the stock one so i'm gonna change it back to the stock one and see if that works. I hope its just the float thats giving me problems .

[Hash_ra23]

Good news, she runs!
Altho rather rough, and smokey and noisy... she runs!
First time ran in about 9 months and after the carby rebuild...

The problem was the float. Firstly it wouldnt close and so it just kept pumping fuel and it wus overflowing into the intake. then i pulled it apart again and adjusted the float, put it back on and it still didnt work . Then the 3rd time i adjusted it so it would close at a lower level. Put it back on and it no fuel wus going in at all! x2.
so i pulled it off again and took it apart and adjusted it again....
And it ran! Altho the fuel level isnt too good still as its a bit below the sight glass. But im pretty happy after the 4th time of pulling it apart.

heres a vid: http://smg.photobucket.com/albums/v4...t=DSCF1915.flv

Its pretty rattly, which is either the timing chain or the valve clearances. So gotta sort that out.. but woohoo im making progress and learning alot .

[hosking1991]

o my 18r i dnt think i put the hoses bak to there right spot i remember seeing a digram on here does any one hav it and if the hoses arnt in the right spots will the carb fuction propaly

[o_man_ra23]

the rattle could also be a broken valve spring... had that one before... but more than probably the traditional timing chain rattle. Ive only ever come across one 18R without the timing chain rattle, and thats the one in my current RA40

Good to see you gave it a go and go it going. Get that float level right, and then find out what is causing your rattle. Its not old crappy oil is it??

Cheers, Owen

[Sagluren]

time to ge the old thread going again, i rebult my asian carby today and all is well, starts and all that, but my choke hasent worked since i got the car, the choke is the three screw adjustable type, i have tried to adjust but when it is turned nothing happens to the actual choke butterfly. i have had it off and tried putting it back on in diffrent positions but nothing changed, i did notince that the linkage that controls the top butterfly dosent allow it to close, any ideas or solutions??

sam.

[Hash_ra23]

is ur choke stuck open?
theres a little lever thing inside the choke housing that the choke gets stuck on. You can move this so the butterfly is able to close.

[Sagluren]

mmm i dont think so, but will have a look tomorow at work,

thanks.

sam.