Idle adjustment screw.

[Midlifecruiser]

I am a newbie, first time posting. I have been lurking for a few months after the purchase of a 77 FJ40. It needed a lot of work but the main issue was poor or no idling. Upon getting home I planned to dig into that issue but found gas pouring our of the tank. Not sure how it waited for 24 hours after I bought it....

Anyway, repaired the tank so figured I should do the clutch and all that crap while I had the seats out.

My plee for help is not that I am back to a running(poorly) vehicle my attention is back to the crappy idle. To keep it going I have the idle speed set high. I have found the links describing setting the idle adj screw. However, they count on getting the warm engine(it runs fine cold and under choke) to 650 RPM. I can't do that without it dieing.

Then beyond the idle issue, it runs overall rough. I tested vacuum,(at fast idle mind you) at the manifold and have plenty and steady.

Any advice getting this crappy running vehicle to the point where I can make fine adjustments?

 

[Pighead]

Any advice getting this crappy running vehicle to the point where I can make fine adjustments?

First thing I'd check is your fuel cut-off solenoid. Make sure that is working.

 

[FJforty]

Dizzy and carb type???

 

[AF Sergeant]

I bought my 80 FJ in june, ran ok at the time, got it home and began making checks and adjustments immediately, still have not finished. Started by setting the carb, next the valves, most recently the timing, then back to the carb because the timing changed things on me a bit. running a lot better now. I have a bad manifold leak and that is making in run rough for about the first 8 minutes, then it smooths out but i can still hear the tik tik tik. you just have to get in there and start taking note of the condition. Congrats on your purchase and may you have many years of maintenance and fun ahead of you.

 

[edwjmcgrath]

Ditto on cutoff solenoid.
Then check for a big vacuum leak.

 

[Midlifecruiser]

Idle Mixture screw

Thanks folks. As I read and understand more about the carb I see I have multiple issues, most from past owners that cut and plugged without reading first. I will be checking the solinoid tonithgt as well as pulling the idle mixture screw to make sure it is still a point and not a club or brokentip. Those 2 should get me fuel ad air for the idle so I can back off the fast primary idle that is my current bandaid.

I will update.

 

[Midlifecruiser]

Looks like you were both on with the solinoid. It appears dead so probally in the extended or closed poston. I will unscrew tonight snad see if it can be alvaged as I don't see any for sale othr than used, which I would like to avoid.

In tracing the wire and checking with my meter,(it was okay), I see another wire, red, that was in the same sleeve but it has been cut. Any idea where that goes?? I know it is not the solinoid as that only has the one wire.

Again thanks for the advice on the solinoid.