I do it all the time.
After I cover the engine bay with a full concentrate of simple green, (let sit for 5-10 mins). Then place a ziplock over the air trumpet and use a pressure washer on the lowest setting. There is nothing to really watch out for since the engine is not powered by as many electronics as the newer vehicles.
After I cover the engine bay with a full concentrate of simple green, (let sit for 5-10 mins). Then place a ziplock over the air trumpet and use a pressure washer on the lowest setting. There is nothing to really watch out for since the engine is not powered by as many electronics as the newer vehicles.