Clacking in engine bay

[Gg05]

I know for certain I have a stuck lifter however are the 5.3's known for broken bolts on the exhaust manifold as well.

I'm hearing a clacking more on idle & when it's warm. What do the Avalanche Avengers think?

 

[ygmn]

guessing without hearing it

 

[BainMan]

I know for certain I have a stuck lifter however are the 5.3's known for broken bolts on the exhaust manifold as well.

I'm hearing a clacking more on idle & when it's warm. What do the Avalanche Avengers think?

Yes, they are absolutely known for broken bolts on the exhaust manifold.

 

[Gg05]

Yes, they are absolutely known for broken bolts on the exhaust manifold.

Thanks Bud you all are awesome always appreciate the insightful advice & guidance.

 

[BainMan]

Did you check? It's usually the ones closest to the firewall on each side.

 

[Meezer]

I know for certain I have a stuck lifter however are the 5.3's known for broken bolts on the exhaust manifold as well.

I'm hearing a clacking more on idle & when it's warm. What do the Avalanche Avengers think?

Mine was really clacking when I bought it 2 cans of Rislone and I no longer have clacking and the engine is much smoother. I have been using that product for at least 30 years.

 

[BB02MT]

I'm dealing with the same issue. Found 3 broken exhaust bolts which I fixed myself. Pita.....didn't fix my ticking. Tried all the quick fixes with the hopes of taking care of it. No luck. I do all my own work but this is to much for my age. This fall it will go to a machine shop 2 blocks from my house. I will probably upgrade the cam along with better lifters. I ain't selling my Avy...still carries 50 lbs oil pressure at warmed up idle and burns no oil. Runs strong and smooth just ticks. Drives me frighten nuts. Can't wait...happy birthday to me

 

[Wpolonavyguy]

I was having rough idle no clicking, pulled intake manifold & valve covers to check.
Almost All the 13mm bolts holding cylinder deactivate solenoid down were finger loose out of 11 bolts 5 were somewhat tight, the rest I didn't need wrench to loosen.
Happy I checked now was covered in oil & grime, cleaned torqued bolts to about 20ft lbs. Checked all lifters seem good no loose rockers. Definitely still using oil catch cans on pcv lines both sides as oil still getting pulled out even with modified drivers side head. Putting back together tonight new fuel injectors, plug wires, and all seals.

 

[SNES Kirby's Avalanche]

I was having rough idle no clicking, pulled intake manifold & valve covers to check.
Almost All the 13mm bolts holding cylinder deactivate solenoid down were finger loose out of 11 bolts 5 were somewhat tight, the rest I didn't need wrench to loosen.
Happy I checked now was covered in oil & grime, cleaned torqued bolts to about 20ft lbs. Checked all lifters seem good no loose rockers. Definitely still using oil catch cans on pcv lines both sides as oil still getting pulled out even with modified drivers side head. Putting back together tonight new fuel injectors, plug wires, and all seals.

The bolts not being tight is one of my biggest fears on my engine. It's bizarre that they came from the factory this way.

Edit: Book spec is calling for 18 ft/lbs

 

[Wpolonavyguy]

The bolts not being tight is one of my biggest fears on my engine. It's bizarre that they came from the factory this way.

Edit: Book spec is calling for 18 ft/lbs

I got lucky from the looks of it had been oozing for some time. I didn't find exact torque specs so luckily 2ft lbs over may hold better. Glad my bad luck didn't get me this time, can't say how many oil pan bolts I snapped trying get torque specs correct . The 2 long ones especially I bought like 6 new they stretched & broke on me many times.
I'm still changing out parts & sensors probably getting close to all new. I saved many of the parts as intermittent issues are the worst to troubleshoot.
I still have a rpm issue when stopping like computer not disengaging torque converter at correct time & rpm dip under 500 lucky dosnt stall out.
I'm thinking possibly vss sensor have new one ready to switch out, but might wait until after I get new tires?
Bought a front wheel kit new upper A arms, lower ball joints, two axles (one current dust cover torn), new wheel bearing hubs with new speed sensors built in. Hoping it's wheel speed sensors telling computer to disengage torque converter improper times.
Such a slight problem & intermittent normal driving see mostly if try to gun engine from a stop feel late bump torque converter & intermittent depending on stopping aswell.
Just enough to bug me most other drivers probably wouldn't notice it.
No codes since fuel pump was replaced that was only for delay starting intermittent aswell.

 

[Wpolonavyguy]

So borrowed my brother inlaws odb scanner much better than my junk one.
Some intermittent fuel pump connectivity so get to double check connections & wiring to that. Also some intermittent air leaks with pcv system? Headache don't think this has ever completely sealed .

My transmission delays idk shows 2 codes but unsure what to do to try remedy these.
Any suggestions?