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Connor
Regular

Location:
Devonport, Tasmania
Registered:
July 2003

Tuning Carbies??	Wed, 22 October 2003 08:52

hey, i have a 3tc with auto choke on the stock carbie and when you start it it goes to about 3000 revs, then backs off and dies?? do i need to give it a tune or what?? and how do i do this? cheers connor [Updated on: Wed, 22 October 2003 22:46] [Report message to a moderator]

Connor
Regular

Location:
Devonport, Tasmania
Registered:
July 2003

Re: Tuning Carbies??	Wed, 22 October 2003 22:46

Anyone pllllz [Report message to a moderator]

Connor
Regular

Location:
Devonport, Tasmania
Registered:
July 2003

Re: Tuning Carbies??	Wed, 22 October 2003 22:48

C'mon [Updated on: Wed, 22 October 2003 22:48] [Report message to a moderator]

Steve M
Forums Junkie

Location:
Adelaide
Registered:
June 2003

Re: Tuning Carbies??	Wed, 22 October 2003 23:21

Sounds like the auto choke has a few issues, try adjusting that, otherwise, it might just be dead. Our 18rc had auto choke trouble towards the end of its use [Report message to a moderator]

Steve M
Forums Junkie

Location:
Adelaide
Registered:
June 2003

Re: Tuning Carbies??	Wed, 22 October 2003 23:33

Is your temperature sender stuffed. If the choke wasn't getting propper temperature readings, it will not work properly, and would do exactly what you've outlined. [Report message to a moderator]

Scorpion
Forums Junkie

Location:
Menai area of Sydney
Registered:
June 2003

Re: Tuning Carbies??	Wed, 22 October 2003 23:45

oops. missed the point. sorry. [Updated on: Thu, 23 October 2003 09:23] [Report message to a moderator]

hotrolla
Forums Junkie

Location:
Sydney
Registered:
April 2003

Re: Tuning Carbies??	Thu, 23 October 2003 00:36

I think it's supposed to idle at 3000rpm for about 30sec's and then it slowly backs off that's if you pushed the accelerate all the way down that will occur. [Report message to a moderator]

Jayem
Forums Junkie

Location:
Finland
Registered:
November 2002

Re: Tuning Carbies??	Thu, 23 October 2003 17:25

You can adjust that 3000rpm thing by bending rod(mild Z thing) that goes from fast idle rocker to choke flap mechanism and the nose that leans on to rocker. Correct rpm(from memory) when fast idle is on is about 2000rpm's. Fast idle should go off when you slightly open the throttle. Dying part is prolly caused by too lean choke mixture. That can be adjusted by turning heat wire bell clockwise->richer mixture. Check also that choke flap is fully closed at open air temperature of 20C and fully open at normal running temperature. Get repair manual for more info. Renewing and checking that vacuum hoses goes from right place to right place makes wonders also. [Updated on: Thu, 23 October 2003 17:26] [Report message to a moderator]

mrshin
Forums Junkie

Location:
Montrose, VIC
Registered:
May 2002

Re: Tuning Carbies??	Fri, 24 October 2003 02:35

Do these carbs have an idle cut off solonoid? Is it working??... On my 2TC (and on every one of my carb'd crapheaps before it!) I just ditched the choke altogether anyway - 2 mins of grumpiness doesn't really bug me anyway [Report message to a moderator]

lowlux
Occasional Poster

Registered:
October 2003

Re: Tuning Carbies??	Wed, 29 October 2003 02:27

i had minor problems when my carby was rebuilt, on the 18r-c motor, the auto choke burnt out the wiring because it was shot, used to work good before i got it rebuilt like one doode said must be a problem with the auto choke [Report message to a moderator]

oldcorollas
Forums Junkie

Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003

Re: Tuning Carbies??	Wed, 29 October 2003 04:37

if it dies quickly after revving up, then i'd be looking for intake leaks. i had two 0.5x5mm leaks in my manifold gaskt and it would do this. tap the throttle, revs up then dies..... get a torch and start lookin. Cya, Stewart [Report message to a moderator]

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