Last post on Sep 08, 2010 at 5:13 AM
You are in the Ford Crown Victoria/Mercury Grand Marquis
What is this discussion about?
Mercury Grand Marquis, Sedan
#3 of 4 Re: 2000 GM: interference engine? [dgilbertson]
Jan 25, 2007 (5:52 am)
Your GM does not have a timing belt like many of the imports, it has a timing chain and it does not have a regular replacement cycle. It could conceivably go several hundred thousand miles without replacement. Chances are that if it does go it will become noisy (sound a little like a diesel) which will give you a clue that a replacement is necessary.
#4 of 4 Re: 2000 GM: interference engine? [ronslakie1]
Sep 08, 2010 (5:13 am)
generally timing chain engines (like yours) are interference engines where the valves qwill hit the pistons if the timing chain fails (remote chance).
Generally timing belt engines are freewheeling , meaning the valves will never contact the psitons if the belt fails. However, many import cars do have interference engines with timing belts and they must be repalced at 100,000 miles to be safe.