car trouble, engine noise

[manji240]

my 1991 240sx (137,000miles) seems to have a slight noise from the timing chain area in the front of the engine. we pulled the valve cover and did not see anything that stood out. i would appreciate any help with it if anyone knows. thank you

[KenOhki2112]

If the noise only happens for the first 15 seconds or so of starting up, this is normal for the 240, and should be comming from the timing chain area, and according to nissan is not a deterimental to the car. If it is persistant, then you have a problem.

[nissanfanatic]

remove the upper chain guard. www.240sx.org

[manji240]

Originally Posted by nissanfanatic

remove the upper chain guard. www.240sx.org

is this a problem, or is it common for a 240 to have that happen at 137,000 miles.( what does that mean, does my chain have slack in it, should i replace it?)

[KenOhki2112]

Originally Posted by manji240

is this a problem, or is it common for a 240 to have that happen at 137,000 miles.( what does that mean, does my chain have slack in it, should i replace it?)

I don't know of a single KA 240sx that hasn't had this problem. If the noise doesn't bother you much just leave it alone, it won't really hurt anything. If you want to stop the noise check out 240sx.org.

[manji240]

its a dual overhead cam!!

[nissanfanatic]

It is almost inevitable unless you idle everywhere. the chain does stretch some, but more than likely the tensioners are worn out.

[zdude]

ummm...manji240, where does he say its sohc?? if your refering to "singe ka 240 sx" he means he hasnt seen a ka without a problem. has nothing to do with dohc or sohc

[vsiev]

yea he got issues about people thinking a 91 is a sohc...which it is not but still lol