05’ V6 4.0L Camshaft Lobe question

4 im here again

Junior Member
Joined
Jan 18, 2025
Posts
16
Reaction score
4
Location
Brea, CA, USA
Hi!
I opened up my valve covers and got to see a cam for the first time in my life. they seem healthy but I wanted to get better look at my cams by experts. I see some strips along the lobes. are those indication of wear on rocker arms? just want to make sure they are good. Thanks!

IMG_9447.jpeg

IMG_9448.jpeg
 

Dino Dino Bambino

I have a red car
Joined
Aug 11, 2014
Posts
4,174
Reaction score
2,090
Location
Cyprus
That's the normal wear pattern left by the rollers of the cam followers on the cam lobes. As long as there are no score marks or signs of pitting in the cam lobes, you can call them good.
You might want to run a fingernail from side to side on the lobes that appear to have a white line. If that line doesn't catch the fingernail you're good. Otherwise it might be a sign that a piece of dirt got into the oil and wore a groove in the cam lobe.
 

wildlifeguy

Junior Member
Joined
Feb 21, 2024
Posts
12
Reaction score
1
Location
Texas
Sorry, I don't know enough about cam wear to make a meaningful recommendation. However, now that the engine is out of the car, it's a good opportunity to fix potential problems. My real question is what are your intentions with pulling the engine? This may impact suggestions.
 

4 im here again

Junior Member
Joined
Jan 18, 2025
Posts
16
Reaction score
4
Location
Brea, CA, USA
i took the engine out to do timing chain guide replacement. im changing out all timing components and while im at it, im changing all gaskets. 1 coolant hose. im wondering if i should do oil pump change also…
 

07 Boss

Senior Member
Joined
Jan 25, 2009
Posts
4,094
Reaction score
1,208
Location
Sin City
i took the engine out to do timing chain guide replacement. im changing out all timing components and while im at it, im changing all gaskets. 1 coolant hose. im wondering if i should do oil pump change also…


From someone who did their timing chains and then had their pump go out shortly after, I would say do it while it's easy and accessible.
 

Support us!

Support Us - Become A Supporting Member Today!

Click Here For Details

Sponsor Links

Banner image
Back
Top