Valve Train Noise

[Jimmyse23]

Ok guys looking for some help. I Had to remove and reinstall the passenger side head. Long story of cursing and yelling about a snapped exhaust manifold stud.

i cranked her up to bleed and burp the coolant and I'm getting some valve train noise. I used my trusty mechanic stethoscope and it's only from the valve train on the side I removed. I'm thinking I messed up the 15° angle note in the service manual.

Is there a trick to setting the 15°? I shut it down as soon as I started hearing the noise. I'll pull the valve cover tomorrow to have a looksy but any help is appreciated.

 

[traintech55]

Ok guys looking for some help. I Had to remove and reinstall the passenger side head. Long story of cursing and yelling about a snapped exhaust manifold stud.

i cranked her up to bleed and burp the coolant and I'm getting some valve train noise. I used my trusty mechanic stethoscope and it's only from the valve train on the side I removed. I'm thinking I messed up the 15° angle note in the service manual.

View attachment 117369

Is there a trick to setting the 15°? I shut it down as soon as I started hearing the noise. I'll pull the valve cover tomorrow to have a looksy but any help is appreciated.

You did the right thing in shutting the engine down when you heard a noise. It could be just a lifter lost its prime and bled down when you put it back together. It is also possible to reinstall the rocker shaft upside down and this will keep you from getting oil to the rocker arms.
Here is how to check to make sure you are alright,
1.Remove valve cover.
2. Inspect your rocker arms for the correct location, there is a diagram of this in the service manual.
3. Make sure the spacers under the shaft bolts are in the proper location, the two wider ones go in the # 2 and # 4 positions. #s 1, 3, and 5 are the narrow ones.
4. Make sure the oiling holes in the rocker shaft are facing downward towards the rocker arms. this is the 15 degree angle the book is talking about. If the shaft is upside down you are not lubricating the rocker arms.
If after inspecting and all is correct put it all back together and run the engine at about 1000 RPM and the lifter should free up with the oil pressure and quiet down.
Any other questions just let us know.

 

[detmatt]

Thanks tt55, you just saved me from finishing my paragraph.

 

[traintech55]

Thanks tt55, you just saved me from finishing my paragraph.

You mean I finally beat someone to the punch first. Your very welcome sir.

 

[Carmine]

You mean I finally beat someone to the punch first. Your very welcome sir.

Was about to type the same thing about reversing the rocker shaft... beaten to punch.

 

[Jimmyse23]

Thanks for all the replies. I should get a chance to look at things tonight. It'd be hard to mess up, I didn't take them apart or really move them much but it's worth checking.

 

[Jimmyse23]

Well I pulled the valve cover and nothing looked too out of place. I loosened everything up and then ensured the oil holes were pointed towards the valve springs. I guess we'll see what happens tomorrow when I crank her up.

 

[Zwap]

...I Had to remove and reinstall the passenger side head...

Did you use the same thickness of head gasket?
Otherwise the lifter preload may have been changed.

 

[Jimmyse23]

Did you use the same thickness of head gasket?
Otherwise the lifter preload may have been changed.

Yep, same exact one that was on it.

 

[moper]

If you haven't, rev the engine a bit. You don't have to redline it, but take it to 3-4K rpm. I'd bet there's some air in a lifter or two. Also - no chance the exhaust manifold gasket is leaking?

 

[Jimmyse23]

I totally forgot to update this thread and close it out. I basically did what Mopar said

If you haven't, rev the engine a bit. You don't have to redline it, but take it to 3-4K rpm. I'd bet there's some air in a lifter or two. Also - no chance the exhaust manifold gasket is leaking?

I don't know if maybe everything just had to find its happy place or a lifter pumped back up but she purrs right along now.

 

[Zwap]

Thats Great!
When you removed the head the pushrods had no pressure on the lifters that probably cause that some of the lifters soak in some air. Most of the time the air dissapear from the lifters even when you crank the engine but as Moper wrote, there probably was some air in a lifter or two that needed some rev to get rid of.

 

[traintech55]

Does anyone ever read these threads from the beginning?

 

[Jimmyse23]

Does anyone ever read these threads from the beginning?

True you did mention it first. Gave the credit to the wrong guy.