So yesterday I was taking off my air cleaner cover to find the OEM number for my carb because it is time to do a rebuild.
When I removed the cover it seemed that there was still fuel under pressure in the carb and it hissed and spit out of the little angled pipe at the front of the barrel. I do not know its name. Is that normal? the car was still hot from the 20 mile drive home (though it had sat for about an hour)
Also I am intereseted in testing my AC Advance switch and my other vacuum switches but am unable t find info about them in my chiltons.
I found this diagram here: viewtopic.php?t=692
and want to know which one is for the AC and which ones might when outside temperatures get hot may cause hesitation and run-on. All winter run-on and hesitation was non-existent but as the outside temps climb and the use of the AC becomes a requirement the hesitation just gets worse.
Thanks
Is this supposed to happen
Is this supposed to happen
<span style='font-family:Optima'><span style='font-size:8pt;line-height:100%'><span style='color:green'>1984 SR5 4WD gold 140k miles running superbly on new clutch</span></span></span>
I don't think that you will need carb number since the the rebuild kits should fit all the NA 3A & 3A-C carbs.
The tube you are talking about is a fuel bowl vent tube. I have never seen it spit out fuel. Maybe the fuel bowl is overfilling due to a faulty needle valve or float. (Hence, the need for a rebuild). Check the float level in the sight glass on the front of the carb.
The vacuum hose map for the A/C should be on a sticker on the inside of the hood. To check the components of the idle-up circuit download the FSM on this site. Check pages AC-17 and AC-40 for proper procedures.
As far as the hesitation...I would check the troubleshooting tables in the different sections in the FSM after checking the basics...ignition timing and advance systems(mechanical and two vacuum),plugs, wires, rotor, cap, engine compression, cooling, etc.
Hope this gets you going in the right direction.
The tube you are talking about is a fuel bowl vent tube. I have never seen it spit out fuel. Maybe the fuel bowl is overfilling due to a faulty needle valve or float. (Hence, the need for a rebuild). Check the float level in the sight glass on the front of the carb.
The vacuum hose map for the A/C should be on a sticker on the inside of the hood. To check the components of the idle-up circuit download the FSM on this site. Check pages AC-17 and AC-40 for proper procedures.
As far as the hesitation...I would check the troubleshooting tables in the different sections in the FSM after checking the basics...ignition timing and advance systems(mechanical and two vacuum),plugs, wires, rotor, cap, engine compression, cooling, etc.
Hope this gets you going in the right direction.