You absolutely cannot rely on memory or guesswork for pushrod installation. Installing them incorrectly will severely damage the engine.
To determine the correct pushrod length for your engine:
1. Identify your specific engine code: This is usually stamped on a metal tag on the engine block. Knowing the exact engine code (e.g., LG8, L32) is crucial.
2. Consult a repair manual: A factory service manual or a reputable aftermarket repair manual (like Chilton's or Haynes) specific to your 1999 Chevy Malibu and its engine will show you the correct pushrod lengths for each cylinder. These manuals will have diagrams and specifications to guide you.
3. Use a pushrod measuring tool: These tools measure the correct length to ensure the valve is properly adjusted. They are available from auto parts stores.
Improper pushrod installation can lead to:
* Bent pushrods: This is the most common result of incorrect installation.
* Damaged rocker arms: The rocker arms can be bent or broken.
* Damaged valves: The valves can be bent or damaged, requiring extensive engine repair.
* Engine failure: In severe cases, the engine could be destroyed.
Never attempt to install pushrods without the correct information. The cost of a repair manual is far less than the cost of engine repair.
