2008 what make, model ... please be more specific
Run a compression test. If the valves are properly seating, the compression will be up.
Sound like a timing problem. Check fly wheel shear key for wear.Or it might be warn valves. If the engine runs fine once it is started, then it sounds likes the engine needs the valves adjusted. The engine does have a compression release built into it. If the valves are too loose it will have too much compression. For help on adjusting the valves watch the video in the link below.
The different types of old shower valves include compression valves, ball valves, cartridge valves, and thermostatic valves.
Worn piston rings, Burned valves, Sticky valves,
Do a compression test on engine
The different types of bathroom faucet valves available in the market include compression valves, ball valves, cartridge valves, and ceramic disk valves.
The 2008 Toyota 4Runner has 24 valves.
The 2008 Nissan Rogue has 16 valves.
The 2008 Audi A6 has 24 valves.
The 2008 Audi S4 has 40 valves.
The 2008 GMC Canyon has 16 valves.
The 2008 Nissan Quest has 24 valves.