Faint Knocking/Tapping Noise
08-03-2009, 08:31 PM
#19
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My '05 has this same mysterious knock/tap, I have done all the same things as you have and all to no avail. I just replaced the injector tips and installed head studs and was worried I did something wrong but several people on several forums have the same thing happening. I did read something about the CP3 being out of tune with the rest of the engine. Some guys adjusted it and it worked for them and some it didnt work. 
08-05-2009, 02:39 PM
#20
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Well, they found metal in the motor 
:
There was metal laying ontop of the #6 piston
They traced around and found some casting material from the mounting area of the CFM+ intake had broke loose and went into the motor
The #6 piston is damaged, and will need replacing
They are crunching some numbers right now and will call back with a price, for the piston, labor, head, etc
They did suggest some ARP head studs, and I think I am going to have some installed
Does anyone where where I can get a new or reman head at?......just curious about price difference, compared to what they are going to charge
:There was metal laying ontop of the #6 piston
They traced around and found some casting material from the mounting area of the CFM+ intake had broke loose and went into the motor
The #6 piston is damaged, and will need replacing
They are crunching some numbers right now and will call back with a price, for the piston, labor, head, etc
They did suggest some ARP head studs, and I think I am going to have some installed
Does anyone where where I can get a new or reman head at?......just curious about price difference, compared to what they are going to charge
08-05-2009, 04:30 PM
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Mine just started this new ticking/knocking noise this past friday. It still runs fine and everything. I filled up with gas and later that day noticed the new noise.
08-05-2009, 08:28 PM
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08-06-2009, 03:51 AM
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08-21-2009, 02:13 PM
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After the truck being down for three weeks, I finally got it back with $4,500 worth of new parts/labor:
#6 Piston, piston pin, connecting rod, rod bearing, cylinder ring set, complete new head, and about 20 various gaskets, flanges, orings, seals and misc parts
anyways!....the truck is doing great
While the head was off, I had ARP (247-4202) head studs installed
#6 Piston, piston pin, connecting rod, rod bearing, cylinder ring set, complete new head, and about 20 various gaskets, flanges, orings, seals and misc parts
anyways!....the truck is doing great
While the head was off, I had ARP (247-4202) head studs installed