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Erractic 3F carby idle

Tech Talk for Cruiser owners.

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Posts: 1109
Joined: Mon Feb 12, 2007 8:48 pm
Location: Australia

Erractic 3F carby idle

Post by hulsty »

Has anyone experienced an erractic idle with a 3F carby motor and fixed the problem? My car intermittently on both petrol and has has a hugely erratic idle. Normal idle is around 800rpm, but today to keep the car from stalling at the lights I had to apply the choke and the idle was quickly jumping around from 400rpm all the way upto ~1500rpm. Take off from lights remove chock and all is fine, next set of lights and it idles normally.

This problem seems to come and go every few months but I have not been able to track it down. I was thinking its possible something to do with the vacuum secondaries on the stock carby?
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Joined: Wed Aug 20, 2003 10:02 am
Location: Hornsby Sydney

Post by Surfin Alec »

My old mans 75 troopy with a 3F did the same, found the wire to the fuel soleniod thing on the side of the carby was a bad connection. With it disconnected, the idle was almost non-existant. Fixed the wiring and all good again. Worth a look into.
GO the 80...The mods have started :-)
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