G13BA idle trouble

[BlakeJ]

hey guys my sammy wont idel, no matte how much i pay with the idle screw its quite irratic and just dies, once running it runs mint. Only just started doing it and then this arvo the battery went flat also, even with heaps of driving. Would a phucket alternator still allow the truck to run but just not idle?

[UBZ]

if the alternator is causing that much drag you should be able to hear it .
of its not charging you should get a dash light on.

get a can of CRC carb cleaner and spray into the carb with the engine running.
also have you checked for vaccum leaks? Is the timing correct?

[zukmeista]

Probably a blocked idle jet. Clean out the float chamber and add a fuel filter between the pump and carb.

[ladeda]

Do they have a fuel cut off solinoid on the carb?
Had simmilar symptoms, found wire to solinoid had come disconected.

If alt is stuffed, light on dash like ubz said and eventually bat will drain down so flat engine wont run at all. bat is possibly poked. how old is it? (4 to 5 years is avarage life span). Dont forget to check bat terminals are clean and tight.

[strx7]

carb needs rebuilding. first sign of the carb dieing in a g13a/g13b/g13ba is crap or no idle. they wear out the bushes the throttle shaft goes thru, meaning they suck air in thru them, hence the idle issue

[BlakeJ]

yea def not batt or alt now. Its weird it only does it when hot, idles fine in cold and as soon as it has gone for a 100kmph thrash it starts doing it. no vacuum leaks i can see. If it was worn bushes why would it only do it when hot? Im just uploading a video of it running to youtube ill post it when its done.
cheers
Blake

[Sadam_Husain]

are you adjusting it with the idle mixture screw or the rev adjuster on the throttle linkage, the idle mixture screw you wind in untill the engines about to die and wind it back out just far enough to get an even idle, the adjuster on the throttle linkage only sets where the engine revs at idle

[BlakeJ]

Hey marty, just the rev ajuster, i had a play with the mixture but when it was running mint so that is set right. im thinking there might be a bit of shit in the tank as it only plays up after a good run, gave it the old mexican tune up revving the shit out of it blocking the airflow and starving it and it seems to be alright now, im gunna head to town in the morning and bang in an inline fuel filter just b4 the carb

[UBZ]

get a can of engine start and selectively spray around all the vaccum lines and actuators whille the engine is running . if you have a vaccum leak the revs will pick up.

I'm guessing that this Sammy will have load of emissions gadgets .so the problem might not be on the engine itself .
Ie Fuel vapor system - canister mounted on the firewall
hot idle compensate - carb
EGR - back of intake manifold

and then check the jets and plunger filter in the carb

[BlakeJ]

http://www.youtube.com/watch?v=v-KBmezS ... e=youtu.be

theres the vid excuse the wind. When u first hold the thorottle open and its a bit judderly i am holding it in one position but its revvs are varying, its not me varying it

[BlakeJ]

get a can of engine start and selectively spray around all the vaccum lines and actuators whille the engine is running . if you have a vaccum leak the revs will pick up.

I'm guessing that this Sammy will have load of emissions gadgets .so the problem might not be on the engine itself .
Ie Fuel vapor system - canister mounted on the firewall
hot idle compensate - carb
EGR - back of intake manifold

and then check the jets and plunger filter in the carb

himm hot idle compensate that sounds like it could have something to do with it, im not sure its just a standard 94 sammy, only need to to get me to chch then im putting my g16a 16v in it, so dont really wanna spend any coin on the g13. What is the hot idle compensate excuse my ignorance

[Rotazuk]

How much gas in the tank ? About a quarter or less ?

Cheers
Chris

[BlakeJ]

hey chris, about 3 quarters. Sending the stuff off on monday too just to let u know. Cheers

[Rotazuk]

I had a 413 that would cut out after being driven hard ( anything over 70kph ) with 1/4 tank or less . Checked everything , cleaned tank and filters and lines etc . Would only do it at 1/4 or less . Never did sort it in the end , got replaced by a ca18de . I think it was carb freezing by why only with 1/4 tank . And yes I could use that 1/4 tank if I did not go over 70

Chris

[BlakeJ]

right ive pulled the carb to bits, there was a few specs of shit in the float bowl. The little short main and secondary jets are fine. Where is the idle jet? and how do i get it out does anyone know?

regards to the wearing out bits that suck in air also, when i flood it on purpose pumping the throttle fuel leaks out of the butterly throttle shaft that has the spring on it, could this be the problem?

[BlakeJ]

carb needs rebuilding. first sign of the carb dieing in a g13a/g13b/g13ba is crap or no idle. they wear out the bushes the throttle shaft goes thru, meaning they suck air in thru them, hence the idle issue

Problem solved, well not really solved but as uncle Alf would say shits fucked. There is heaps of play in the shaft going to the butterly valve in the primary, must be sucking heaps of air. Anyone got a swift of samurai 1300 carb floating around? just needs to be good enough to get me to chch