Chevrolet Astro cranks but won't start despite replacing distributor cap, rotor, fuel filter, and air filter on Chevrolet Astro

Some Chevrolet Astro owners report experiencing difficulties with their vehicle cranking but not starting, even after replacing the distributor cap, rotor, fuel filter, and air filter. These issues may stem from incorrect alignment of the distributor marks, which can hinder starting. Additionally, owners should ensure that there is adequate spark at both the distributor and spark plugs, as well as proper fuel pressure, typically around 55-65 psi. It's also crucial to verify that the fuel pump activates when the key is turned and that fuel is being delivered from the injectors. Some owners find it helpful to visually check for spark at the plugs while a helper cranks the engine and to measure fuel pressure with a gauge. To prevent moisture-related problems, using a high-performance brass cap/rotor and applying tune-up grease can be beneficial, particularly in damp conditions.