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Okay, I ordered the parts from Riff Raff this morning. Clay was a big help.
Started cleaning everything to be prepared when the parts get here.
Decided to paint everything while I was at it.
Ordered the EBPV delete pedestal and exhaust adapter. Also deleting the AIH so ordered the bypass plugins.
Couldn't afford to do the up pipes as I wasn't prepared for this whole incident and stretched a bit to get the upgraded compressor wheel.
Update.
I found out what the pulsating sound was. We were on a 2600 mile trip and it started that same sound when climbing a hill. Turned out to be the A/C compressor clutch cycling on and off.
Flipped the A/C to off and no pulsating and just a steady pull.
We were blessed by no issues all the way to our destination 1300 miles and then the hose from the power steering pump to the brake booster let go while in the parking lot trying to back the rig in. Glad it didn't pop while on I-40 or navigating the Arkansas mountain roads. No steering and no power brakes is scary stuff.
Rather than starting a new thread I will continue this one.
Under load I am hearing a high pitched tapping sound, almost like a sewing machine. My initial thoughts are that it is either a rocker arm out of adjustment or a hydraulic lifter starting to fail.
However I have read posts that indicate it could be injector noise.
Any thoughts or suggestions on how to diagnose and fix this problem?
Jim, didn't you recently have your injectors out of the engine for a homestyle rebuild? They may only need to be tightened.
Some of these fellas swear by a hot torque and a follow up check on the torque. I plan to perform both of those if/when I need to install injectors one day.
Good point. I remember reading about the hot re-torque but never got around to it.
The tapping noise is fairly loud when the engine is working under load but all but disappears when you let off the accelerator. Drove the truck yesterday without the trailer and even when accelerating hard didn't notice the tapping. Then again I seem to be getting hard of hearing lately and especially high pitched sounds.
I have some other work I want to do on the truck so I'll add that to the list.
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