Time Chain Replacment or Not?

[MikeTEC]

My 93 with 106K is running fine, but is it necessary or recommended to change the timing change as preventive maintenance? I have been told 93s have a timing chain tensioner which keeps the chain within specs. Is this correct? Would appreciate hearing from someone with experience. Thanks Mike

 

[hskrbkr]

I don't have experience with timing chains, but it is my understanding that timing chains on Explorers should last the life of the engine. It's not like a timing belt that you have to worry about changing.

 

[yob_yeknom]

Originally posted by hskrbkr
...but it is my understanding that timing chains on Explorers should last the life of the engine...

Not necessarily. Over time they do stretch and begin to make a knocking sound. Even chains have to be replaced sometimes. My is in the beginning stages of knocking right now at ~90,000 miles.

If you're not having any problems with it, I wouldn't worry about changing it unless you have the water pump off and you're already right at it.