When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I want to clean up the engine bay by removing all the pollution crap. The cats have already been removed and it has a dual exhaust. An entire engine rebuild is planned for next year which will include headers, heads, cam, intake, new carb. My car has antique plates so no inspection of any kind is required in Pa.
While taking off the carb for a rebuild, I broke the switch pictured below. I guess I can use a plug when I remove that switch completely.
I am not sure what else I need to remove or how to remove it.
Any suggestions with pics or a good description would be appreciated.
Thank you.
Last edited by shipahoy; Apr 28, 2019 at 02:40 PM.
You might already know this, but one of those two vacuum lines is the 'source', and the other goes to a vacuum activated device (probably either the air cleaner or a valve in the right side exhaust manifold). The device side hose can just be removed, but the source line needs to be plugged in some way - cleanest way is to trace the hose back and cap it with a rubber vacuum line plug (available in the Dorman/HELP product line at most parts houses).
If you have an AIR pump (I think it was only on California cars in 79), that can be removed (probably easiest to remove when you install headers, as the holes in the exhaust manifold would need to be plugged).
When you replace the intake manifold, you can choose whether you want to eliminate the EGR valve stuff.
Thanks I bought a bunch of caps and there is no AIR pump.
Thanks.
Originally Posted by bradleyb66
You might already know this, but one of those two vacuum lines is the 'source', and the other goes to a vacuum activated device (probably either the air cleaner or a valve in the right side exhaust manifold). The device side hose can just be removed, but the source line needs to be plugged in some way - cleanest way is to trace the hose back and cap it with a rubber vacuum line plug (available in the Dorman/HELP product line at most parts houses).
If you have an AIR pump (I think it was only on California cars in 79), that can be removed (probably easiest to remove when you install headers, as the holes in the exhaust manifold would need to be plugged).
When you replace the intake manifold, you can choose whether you want to eliminate the EGR valve stuff.
I didn't mean to be glib in my previous post, just brief.
A lot of the vacuum hoses under the hood are used for "emissions" systems that do nothing more than help the car warm up faster. This includes the valve on the passenger exhaust manifold, valve(s) on the air cleaner, and elsewhere. When figuring out what I needed to keep and what I could eliminate, I removed EVERYTHING, and put back fresh hoses only to the systems that I knew were needed.
My list:
PCV
Fuel vapor canister (two hoses, one a ported "signal", one Tee'd to the PCV)
Vacuum advance on distributor (manifold)
Power brakes
Headlight actuators
You may also want to preserve the vacuum controls on the HVAC system, but I blocked those off on my car.
as does your shop manual. Search here, or elsewhere on the internet, figure out what you do and do not need, and make an informed decision as you pull sfuff off.
1979 Smog equip removal.
