|
There are typically only 2 on the throttle, besides the large air hoses.
There is a small one which may be plastic with a very short vacuum hose 90°, only 1/8" or less diameter. There is a larger one which fits 1/4" tubing. (Probably 6mm, but what do I know?). Those 2 go forward to the evaporative emissions charcoal canister in the LF fender area.
Can't swap them, they're quite different in sise.
Now, other hoses around the area: A perhaps 6-12" hose goes from the very front end of the fuel injectors metal fuel rail, making a U-turn and plugging into a port that's on the lower side of the intake manifold behind the throttle. Should only be 1 place on the intake for it to connect, and it's right under that pulley wheel/ rod assembly that moves when you step on the throttle.
This is driver's side of the engine, for USA cars.
On the other side of the intake manifold, pointing toward the passenger side or really straight toward the valve cover, there will be a couple more vacuum fittings. One is very small, and right in the exact center of the manifold.
See it? It should have 1 approx 1/8" vacuum hose on it, and go sort of out-of-sight to the plastic flame trap between cylinder 3 and 4- like the top, rear of the engine. Can be hard to see exactly what it plugs into if it's grimy. Just make sure it's securely connected to the manifold port. If it's split, or plugged with carbon, it should be replaced.
There will be at least 1 other small hose connecting to the top of the intake manifold somewhere. It may have T's coming off it for other things like cruise control, IF your car has this option. You should see a larger hose going to a black and white plastic disc. That thing's a check valve. The small (1/8" or smaller) tubing from that should go to the firewall and disappear into the body. That runs the air vents in your dashboard. If it's in good shape and securely connected, don't worry about it.
There should be 1 other connection coming from the intake in a hard-to-see spot, connecting to a clear white plastic tube, that goes to a sensor for the fuel injection computer. Some cars have what's called a MAP (Manifold Air Pressure) sensor. I don't know whether yours will or not but there is probably 1 vacuum line for something like this.
Pictures will always help if you have more questions.
Good luck!
--Rob
|
