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On my car I have power brakes, pcv and dizzy hooked to carb and electric headlights. I don’t have ac, it’s auto and heater core removed.
can I remove the remaining vacuum lines from my car? I still have lines connected to the wiper door actuator, the ones under the dash, I believe the vent with the 3 hoses behind the passenger tire is still there and there are a bunch of disconnect hoses bundled up near the brake booster.
I want to know if I can completely remove all these vacuum lines and just leave the ones currently connected to carb. I seem to have a leak somewhere since my idle is at 5 when this cam should be around 10.
What are these two lines coming out of the firewall on the passenger side?
You'll need to maintain the vacuum lines and system to the climate control by the shifter. Even without A/C this part of the heater/vent still uses vacuum for the duct doors. Does your transmission have a vacuum connection off the manifold?
You have a main feed coming off the carburetor or intake supplying vacuum to the headlights, wiper doors and HVAC. That is what you disconnect to determine if any of those are the problem not each system.
What engine speed are you taking those vacuum readings?
I have the transmission modulator line connected to the manifold. My wiper door doesn’t work as it’s missing some bolts and I don’t drive in the rain at all so I don’t need that system. My headlights are electric so I don’t need that system either. My hvac doesn’t have the lines connected to the ducts by the footwell. I’ve looked and seen the wires have been tucked into the duct openings. So basically none of the hvac controls on the centre console & the wiper switch have any function.
You have a main feed coming off the carburetor or intake supplying vacuum to the headlights, wiper doors and HVAC. That is what you disconnect to determine if any of those are the problem not each system.
What engine speed are you taking those vacuum readings?
the vacuum was checked at idle. I noticed while taking some short runs at heavy throttle that the engine sounded like it was started to struggle/die when heavy braking.
You don't say what year car. My '81 has about a half-dozen vacuum lines going to/ from the carbon canister. You should keep that operating, especially if you park in an attached garage.
I removed the AIR system, blocked off the EGR and about a half mile of associated vacuum lines. That made what was left a lot more manageable.
You don't say what year car. My '81 has about a half-dozen vacuum lines going to/ from the carbon canister. You should keep that operating, especially if you park in an attached garage.
I removed the AIR system, blocked off the EGR and about a half mile of associated vacuum lines. That made what was left a lot more manageable.
the vacuum was checked at idle. I noticed while taking some short runs at heavy throttle that the engine sounded like it was started to struggle/die when heavy braking.
what is the idle speed?
did you check the float levels on the new carburetor?
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Yes it should if its leaking downstream from that point. Just make sure all the fittings on the carb are tight and the hose connections are tight. If that doesnt do it check the carb itself and make sure its no leaking at the carb base
Removing vacuum lines
