How do i tell if have a single or dual cam engine in my Saturn sl?

The easiest way to tell if your Saturn SL has a single or dual cam engine is to check your vehicle's documentation. Your owner's manual will clearly state the engine type and specifications, including whether it's a single overhead cam (SOHC) or double overhead cam (DOHC) engine.

If you don't have the manual, you can try these less reliable methods:

* Look at the engine itself: This requires some mechanical knowledge and possibly removing some covers (which may void a warranty if done improperly). A DOHC engine will typically have two camshafts visible, often near the top of the valve cover. A SOHC engine will only have one. However, this is not always easy to determine visually. The valve cover might not be transparent enough to see the camshafts clearly.

* Check online resources: Search for your specific Saturn SL year and model. Websites and forums dedicated to Saturn vehicles may have information on the engine options available for that year and model. Look for engine specifications or discussions regarding engine type.

* Use a vehicle identification number (VIN) decoder: You can enter your VIN into online VIN decoders (many are free, but check their reliability). A good decoder should give you the engine specifications, including the camshaft configuration. This is probably the most reliable option if you don't have your owner's manual.

Keep in mind that Saturn SLs came with different engine options over the years. Specifying the year of your Saturn SL is crucial to get the correct information.