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Cam bearing noise

7K views 3 replies 2 participants last post by  Vlad_Padberg 
G
#1 ·
heya guys, I have a 95 2.3L and I am hearing some
top end noise

I ran it with the serpetine off to help isolate the noise
when I was adjusting the timing belt tension

it sounds like it is coming from just behind the
the cam shaft pulley, kind of a hard noise to
describe, not valve or lifter noise I dont think

the closest thing I can put it to is the electrical
interfearance noise you would hear over your
cars speakers when you rev up the engine if you
know what I mean.

it only makes it whine under acceleration/decelleration
not when at steady rpm

if there isnt a gear back there...then all I can think of
is a sloppy bearing (108k miles)

I havent been under the valve cover on this engine yet
so dont know dont know 100% whats back there.

these symptoms ring any bells for anyone?

how many hrs does this job set ya back?
 
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#2 ·
Your cam belt may be to tight.but more than likely what you are hearimg is normal for a truck of it's age.
At around 100,000 mile's the little 2.3 will show it's age. That's not meant as a put down, these are great little engine's.
Remember with all that stuff moving around ( rocker's, follower's, lifter's) your going to get noise, especially with age.
 
G
#3 ·
I originally thought it might be belt to tight too because I had just replaced it and ughh ummm may very well have overtightened it

(I didnt want to pry off the new waterpump and could not for the life of me figure out how to retension the belt, so I ended up cutting a piece of tubing in half to cup the tensioner bearing and then welded on a hook to its outside, after that I ran a ratchet strap up over the powersteering pump from the frame and onto the hook and gave it a couple clicks)

in hindsite, that was a bad idea :)

I think I had it to tight because I felt (mabey imagined) a
barely noticable power loss when starting off from a standstill

mechanical advantage of that must have been way more than it felt like :(\

looking at the belt, I can also see a slight difference in sheen
where the teeth are and are not, as if it might have streached
between teeth ever so slightly

almost considering changing it
again and just marking it up to (in)experience

I dont know if I rember this sound before i did the timing belt
(but I probably wasnt really listening for it) and because of the overtension tension thing, that is why I was thinking mabey the front bearing didnt like that either :(

thanks for the feedback

-dave

oghh btw, I looked in a timing belt book the other day

it had the mazda 2.3L marked as interference but the ford
2,3L marked as non interfearance, does that sound right?
 
#4 ·
I think thats perfect sense Ford and Mazda both have a version of the 2.3L Ford is an interference and Madza is the non. Around 97-recent they have the ford engines, but the late 70's Ford had the Courier that had Madza engine, in 1982-1996 Ford I think used both engine to keep the consumer happy.
 
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