How to adjust carburetor,linkage on 48 plymouth?
Im trying to find how the carburetor should be adjusted on 1948 plymouth? Anything you know will be helpfull.And anything about the linkage. thanks
- try this website eHow. Good luck !00
- Which linkage? from the pedal to the carb or on the carb itself? Linkage from the pedal to carb should be a threaded rod and swivel at the throttle plate---remove the clip holding the swivel to the throttle lever and close he throttle all the way, make sure it's not sticking in the choke position--then pull on the rod as far forward as it goes and turn the swivel in the threads until it lines up exactly with the hole in the throttle lever--reinstall the swivel to lever and replace clip.
The carb linkages thmselves would require a shop manual or good mechanic to setup properly.00
- Adjusting the throttle linkage for any of the older carburetor cars is relative simple.
Disconnect the linkage from the carburetor.
Ensure the throttle return spring is holding the throttle at full closed.
Ensure the Gas pedal is at the full up position, meaning full down is when you step on the gas.
Adjust the linkage so the throttle rod easily slips into the hole on the throttle butterfly lever. Then clip it on.
Now this last part is the most important part of all.
Have someone push the gas pedal all the way to the floor, with the pedal on the floor ensure the throttle butterfly does not go over center. If it does and you give the car full throttle while driving, the engine will not slow down and will remain at full throttle. This can and has caused fatal accidents, unless your immediately turn off the engine, it will over speed and blow up.
Allowing the throttle to go over center and/or not having a good throttle return spring can kill you.
I have been building a driving Hot Rods for 45 + years. I know of several engines that have been blown and at least one accident that killed a couple of people.
When all the above is done, there is an adjustment screw on the carb (on the butterfly close to where the linkage attaches) that will allow you to adjust the idle speed.
Those old flathead six engines are sturdy, just keep the oil clean and don't let it overheat, they were used from 1933 to about 1953 with minor upgrades. If it ain't broke, don't fix it.00
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