Where are the vacuum ports on my carb?

Jan 02, · i decided to start a new thread with questions regarding the vacuum ports on my carb. you can see the mechanic hooked up the vacuum advance to the rochester Quadrajet vacuum port questions. i still want to find a diagram of the carb to see . Apr 14, · This shows you where the vacuum and fuel lines go from point A. to point B.

What are the vacuum ports on a Rochester Quadrajet?

I’ve tried using a vacuum gauge and adjusting the air mixture screws, but I And help with a diagram showing what vacuum ports should be. chevelle tech, Rochester quadrajet vacuum port questions. engine the port going Olds vacuum identification and diagram, I did run across.

Where is the vacuum port on a Q-jet?

These carbs having an EGR vacuum port are mainly going There is one vacuum port on many Q-jet carbs that was used. chevelle tech, Rochester quadrajet vacuum port questions. engine the port going Olds vacuum identification and diagram, I did run across.

Where does the CTO switch go on a 258 CJ?

The rear CTO switch should be for the Vacuum Advance Modulation system Could be. But it would have to be for a vacuum signal. Exhaust gases only go through a pipe on the later manifolds. TSM says the 49-states 258 CJ has no EGR.

When did CJ-5 / 6 / 7 / 8 build thread start?

Discussion in ‘ Intermediate CJ-5/6/7/8 ‘ started by Leftlane, Jul 27, 2013 . I’m on hacker patrol under the hood of my newish-to-me 1975 CJ5 4.2l. See my build thread for the ongoing saga of my buildup.

Where does exhaust gas go on a 258 CJ?

But it would have to be for a vacuum signal. Exhaust gases only go through a pipe on the later manifolds. TSM says the 49-states 258 CJ has no EGR. But it also says that all ’75 258 CJs have no Air Guard (air injection) which I know from personal experience is wrong for CA.

Can a 75 CJ have no Air Guard?

But it also says that all ’75 258 CJs have no Air Guard (air injection) which I know from personal experience is wrong for CA. And the OP has plugs, as if the Jeep came with Air Guard. The intake is not machined for EGR, if the Jeep has no EGR.

Where does the vacuum line go on a petcock?

Usually a cone shape. The stock petcock was vac. operated, and had a line going to the manifold or a “T”. See if there is a hose on your petcock. If not, that is probably why you have the plugged line. Your carb is a Keihn CV (constant velocity), a good carb for all around application. Your carb has had the fuel inlet elbow replaced.

Where is the vacuum line on an Edelbrock?

But my vacuum lines are hooked up this way: drivers side valve cover to The vacuum present at the driver’s side port on an Edelbrock carb. I installed a new edelbrock and ran my distributor vacuum to the left port ( passenger side of carb) the pcv hose to the middle port and.

Where does the vacuum line go on a Harley Davidson?

The stock petcock was vac. operated, and had a line going to the manifold or a “T”. See if there is a hose on your petcock. If not, that is probably why you have the plugged line. Your carb is a Keihn CV (constant velocity), a good carb for all around application. Your carb has had the fuel inlet elbow replaced.

Where does the HEI hook up to the VAC port?

Hook your HEI up to the ported (part-time) vac port on the pass side front metering block port. No vac at idle, so you can set your initial timing and idle speed without any vac intterference. On this port, you only get vac advance when you hit the gas.

Where are the vacuum ports on an XT?

1) Brake booster – originally connected to the base of the carb (rear). 2) Headlight doors – originally connected to a manifold vacuum port. 3) Vapor canister control line (this port signals the purge valve to open and was originally connected to the small vacuum port near the top of the carb.

Where to connect various vacuum accessories to the…?

I had the builder install the Edelbrock 35790 Pro-Flo 4 XT EFI System. He used the large vacuum fitting for the PCV valve. I understand the small vacuum fitting is the “fuel pressure regulator vacuum reference” port. So, where and how do I make all of the other vacuum connections I need?

What should I do if I find a leak in my vacuum?

Pinch the vacuum line leading to the device, and spray soapy water on it and hear for a change in idle speed. If you find a hose with a softened, hardened, or damaged spot, replace it. You can also spray water on a hose, ports and connectors to help you check for leaks. Using a Vacuum Gauge

Where are the vacuum ports on a corvette?

DESCRIPTION: The 73-79 models use a long cylindrical steel tank with three brass fittings screwed into the surface that function as large vacuum ports. LOCATION: The tank is part of the front bumper mounting brackets; therefore a front end accident can cause the tank to fail.

Where is the check valve on a vacuum?

What that does is help the vacuum reservoir hold more vacuum. Your engine won’t have enough vacuum “force” to move the heating ventilation doors without the reservoir. The check valve is that little black and white thing about 9″ below the round ball vacuum reservoir.

Where do I find the vacuum diagram on my car?

You may find a copy of the vacuum diagram on your car owner’s manual, but most car manufacturers include a diagram inside the engine compartment. Raise the hood and look around the front of the engine compartment for a decal. If you can’t find one on your manual or in the engine compartment,…

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