How do you flush a 2000 Neon engine?
Buy one of the "flush in a can" products and follow the directions exactly.
if you want to do a machine flush your dodge dealer should be able to help you out. it wont be cheap, expect to pay between $100 and $150 for the flush and an oil change.
His there any damage to the motor or valve's if timing belt breaks while engine was running on a 2000 dodge neon?
Add Engine Flush to the motor oil at running temperature before changing the oil. After adding the product, allow the engine to idle for approx. 10 minutes. Then change the oil and the filter. Engine Flush is compatible with all commercially available motor oils. We recommend cleaning the engine interior with Engine Flush before every oil change.