In this segment of our four part series on carburetor upgrades we will remove the old carburetor from the engine. Removing the carburetor is not that difficult as long as you take a few minutes to label the old lines and keep track of all the parts you remove. This is a case where a little time spent now will save considerable time and trouble later.
Main Points – How To Remove An Old Carburetor
- Do not begin removing the old carburetor if the engine is hot. No need burning yourself while working on a hot engine.
- Before you begin, have some tape and a pen available. Use the items to mark the fuel line and vacuum hoses so that you will know which lines go where on the new carburetor. Finally, have something available to plug the fuel line so that fuel does not leak. The video recommends an item called a “plugs-it” or a center punch.
- Determine if your car has a vacuum advanced distributor. If it does, then you need to determine if the distributor uses ported (timed) vacuum or manifold vacuum. The video describes a simple way to determine the type of vacuum your engine uses. This will be important when hooking up the vacuum lines to the new carburetor.
- When unhooking the fuel line, be careful because fuel may squirt out. Have a rag and a “plugs-it” or center punch available to plug the line quickly.
- Unhook all the other hoses and mark each one with tape. If you have a digital camera available you may want to take pictures along the way to use as a reference later.
- Remove the linkages. Make sure that you keep accountability of all bolts, washers, springs and anything else you remove. If any of these small items are lost there is a strong possibility that they will fall into the carburetor or through the manifold into the engine. These small pieces could cause engine damage if the fall into the wrong place.
- Remove the bolts that hold the old carburetor in place, the old carburetor, the old gasket and finally the old studs from the manifold. Again, be careful that nothing falls into the manifold openings.
- After the carburetor is removed, stuff some clean rags into the manifold openings to prevent debris from falling into the engine and causing engine problems later. Using a gasket scraper, remove any remaining pieces of the old gasket as well as any carbon deposits. This is a very important step, any leftover gaskets or carbon deposits will result in a vacuum leak when the new carburetor in installed.
- Finally, use some carburetor cleaner to clean any remaining dirt, carbon deposits or gasket residue from the manifold.
Now you are ready to install your new performance carburetor. Part three of this series will show you how to do it the right way.
The rest of the “How To Replace A Carburetor Series” is below:
- Part One – Carburetor Upgrades, Introduction To The Carburetor
- Part Two – Carburetor Upgrades, Removal Of The Old Carburetor (This Article)
- Part Three – Carburetor Upgrades, Installing The New Carburetor
- Part Four – Carburetor Upgrades, Installing The New Carburetor (Second Half)
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