Fixing The Start Up Rattle

[elgyqc]

Originally Posted by robmints

Hi guys. All help appreciated.

01 base. LN ceramic IMS no oil line. LN oil filter base.

Bank1. 7.1
Bank2. 4

Start up rattle that is a bit transient and not on all cold starts, or long periods of sitting. Can happen any time. Most common cold but not necessarily. Does happen more often now that I got a new battery.

In my Pelican cart I have all 3 tensioners w/crush washers. New guide rail with pad/ clip/ bolt oring. 2 FU/RL ramps. 2 FL/RU ramps. 2 sets of vario cam pads. Another guide rail for the intermediate shaft. 6 End Plugs. Will get 5900 from store. I have the Baum kit for timing.

A couple of questions.

Do I need more info from durametric on solenoids or actuators?

How do I know if i have 5.3 or 5.7 abs? No psm on the car. Durametric is asking me at set up.

Can I get all the chain guides swapped with the engine out and valve covers off?

What book or directions should I buy? As you can tell i am only youtube trained so far.

Thank you!!

If it is a 2001 it should be a 5 chain engine. You didn't mention the car's mileage.
Hopefully more experienced members will answer, but I am pretty sure you have to split the crankcase to change the intermediate shaft guide rails. If you do that you are talking about a complete engine rebuild.
I have changed variocam pads on two engines (one with 100k miles the other with 105k miles) and the chain guide rails were fine on both so didn't change them.
I would start by changing the adjusters (called tensioners in the PET) which is relatively simple with the engine in the car and see what happens.
I think variocam pads are a weakness in these cars and should be changed sooner or later, preferably earlier, but probably you can get away with not changing the other chain guides.