How do you test an electric choke coil?
Check from red plug to ground to be sure you have power first. Your photo shows the choke in it’s cold or closed position. When you work the throttle the fast idle cam (other side of the carb) should rotate into the fast idle position. Turn the ignition on and wait a minute…..now work the throttle again.
What controls an electric choke?
Manually – A manual choke is controlled by a lever on the side of the carb. Electric Choke – An electric choke uses electricity to warm the spring and gradually open the choke. Divorced Choke – In a divorced choke set-up, the metal spring is located in the intake manifold.
Where is the electric choke power?
For electric choke hookup, attach the bayonet end of the long electrical lead supplied to the positive terminal on the choke cap. The other end must be connected to an ignition activated 12-volt source. The distributor side of the ignition coil is NOT a 12- volt source. It is a 7-9-volt source after cranking.
How long should electric choke stay on?
At 5°-10°C (41°-50°F), the choke plate should be fully open in about ten minutes. Check for bent choke linkage and a defective thermostat cap. And ensure the fast idle cam (screw) is properly set.
What would be the effects of a sticking automatic choke?
If the choke valve sticks, the mixture will stay rich. Your warmed-up car will be hard to start, run poorly and waste precious gasoline. A bi-metallic spring in the choke housing on the carburetor is connected to the shaft that the flap rotates on.
How many volts does an electric choke need?
Factory chokes were connected to the stator terminal of the alternator. That connection provides around 7 volts. Aftermarket chokes need a full 12 volts.
Where is the choke plate on a Quadrajet?
The Quadrajet uses many moving parts, unlike most carburetors. Remove the air cleaner. Inspect the choke system while the engine is cold. The choke mechanism is the plate on the top of the carburetor. It has a spring located in the manifold with a rod running up to the plate.
How to troubleshoot a Quadrajet carburetor [ step by step guide ]?
Troubleshooting a Quadrajet Carburetor Introduction. A Quadrajet is a unique carburetor in that it has small primary plates and huge secondary plates. It is a… Diagnosing. Remove the air cleaner. Inspect the choke system while the engine is cold. The choke mechanism is the plate… Warning and
Where is the choke located on a carburetor?
The choke mechanism is the plate on the top of the carburetor. It has a spring located in the manifold with a rod running up to the plate. There will be a vacuum-operated servo on the passenger side rear of the carburetor, with a rod also attached to the choke mechanism.
Where is the Tang on a Q jet choke?
The choke should be cracked open 5/16” as measured between the rear upper edge of the choke blade and the rear airhorn wall. Use a drill bit to check this. To adjust, notice that there is a small sheet metal tang attached to the lower side of the fast idle cam. This tang determines the travel range of the choke. Bend the tang to adjust.