If you find oil in your intake manifold, it's not something that should be ignored, but what has caused it isn't always clear. Here the most likely culprits.

Having said that, it’s important to note that paying someone to fix an intake manifold won’t be cheap. On average, expected to pay between $400 and $600 for repairs.

Intake manifolds may not be the most well-known automotive components, but that doesn't take away from their importance. These devices are responsible for sending a precise mixture of fuel and air ...

Sheetmetal MythsAs exotic specimens most enthusiasts aren't too familiar with, sheetmetal intake manifolds are surrounded by misconceptions that need debunking.

5.4L Modular Motor Intake Manifold Test - Factory Fast Vs. Advanced Aftermarket. The First-Ever MM&FF 5.4 Intake Shootout. HOT ROD Staff Writer Nov 01, 2007. See All 14 Photos.

With the stock intake manifold, our test subject laid down 367 rwhp and 307 lb-ft of torque. All of our intakes will be compared to these numbers. C&L Performance- PN 720.

The single four-barrel intakes include the Trick Flow 4150, a Mopar M1 4500 intake, and an M1 intake that was heavily ported by Wilson Manifolds. See All 46 Photos ...

Your intake manifold. It takes in air and sends it to your engine's combustion chamber. This is basically the start of the combustion process. After all, you can't have combustion without air.

It wasn't until the Eighties, however, that automakers began using variable-length intake manifolds. A great early example is the Porsche 928 S4 . Below 3500 rpm, the 5.0-liter V-8 was fed through ...

But if you can use an intake manifold that can be both, then you don't have to choose. That's where variable intake manifolds come in. It's the sort of compromise that isn't actually compromised.

These manifolds allow for superior top-end power and higher RPM, and drivers installing a single-plane intake manifold can usually expect to add at least 500 to 1,000 RPM to the top of their ...