This generation of Holden engines was prone to failure of the crankcase ventilation valve (PCV). When it failed, it caused a vacuum leak in the engine that could easily cause rough running and hard ...

However, oil leaks are a relatively common problem that ... until you discover oil residue somewhere, like the intake manifold. While a small amount of oil in the intake manifold can be normal ...

With some vehicles using dozens of vacuum hoses and the potential for cracks in multi-part intake manifold systems, there are plenty of places for leaks to crop up. The ducting between the ...

The Mercury Grand Marquis is a sedan that was manufactured by Ford from 1975-2011. The model has been discontinued. Read more Ford reviews to learn about other models. How do I know I can trust ...

A manifold leak will throw the engine’s fuel-air ratio out the window and can cause poor cold running and hard starting. The old school way of checking for a vacuum leak is to get the engine idling ...

This method is less thorough but can save time and effort for light carbon buildup What are the signs of a bad intake manifold? Common symptoms include engine misfires, rough idling, reduced power, ...

Vacuum leaks can also come from a loose or cracked intake manifold. If you've recently removed the manifold, carburetor, or throttle body, it can be helpful to check the mounting bolts with a ...

A faulty coolant temperature sensor can damage your engine. Here's how to tell if yours has gone bad, plus how to fix it.

The intake manifold is responsible for the precise distribution of air into the engine cylinders for perfect combustion. Therefore, the intake manifold plays an important part in the performance of ...