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  • SN95 4.6L Mustang Tech

2003 Pi Engine Knock

  • Thread starter Thread starter Drich35
  • Start date Start date Dec 27, 2016

Drich35

Member
Dec 26, 2016
14
2
13
Dec 27, 2016
#1
  • Dec 27, 2016
  • #1
Finally got a video of my 03 engine swapped into my 96 GT. Noise is constant and sounds stronger on front drivers side. I am leaning towards the drivers side tensioner being faulty.
 

Neuron

5 Year Member
Nov 6, 2016
859
192
93
Dec 28, 2016
#2
  • Dec 28, 2016
  • #2
Sounds kinda like a lifter to me but I am no expert on the tensioner sound. I would try a mechanics stethoscope to try and pin it down better.
 

HawkX66

Member
Mar 20, 2017
51
1
8
Michigan & Mass
Mar 25, 2017
#3
  • Mar 25, 2017
  • #3
Drich35 said:
Finally got a video of my 03 engine swapped into my 96 GT. Noise is constant and sounds stronger on front drivers side. I am leaning towards the drivers side tensioner being faulty.
Click to expand...
Did you get this figured out? What was it?
 

Drich35

Member
Dec 26, 2016
14
2
13
Mar 26, 2017
#4
  • Mar 26, 2017
  • #4
Alli could find was super sloppyplay in cylinder #5. All rod bearings are tight but i can wiggle number in its bore.
 

Drich35

Member
Dec 26, 2016
14
2
13
Mar 26, 2017
#5
  • Mar 26, 2017
  • #5
Drich35 said:
Alli could find was super sloppyplay in cylinder #5. All rod bearings are tight but i can wiggle number in its bore.
Click to expand...
Number 5. Dang cell phone typing.
 

HawkX66

Member
Mar 20, 2017
51
1
8
Michigan & Mass
Mar 27, 2017
#6
  • Mar 27, 2017
  • #6
Drich35 said:
Alli could find was super sloppyplay in cylinder #5. All rod bearings are tight but i can wiggle number in its bore.
Click to expand...
Thanks. I didn't realize the other post was yours too. I'm still hoping mine is valve train related and not in the short block. It's not looking good though... Good luck with yours.
 

Drich35

Member
Dec 26, 2016
14
2
13
Mar 27, 2017
#7
  • Mar 27, 2017
  • #7
impossible noise to pinpoint. Mine sounded like center engine at the intake. I replaced all lash adjusters and timing tensioners twice. When i took mine apart the heads and valves all looked good. There was some scoring on cylinder 5 and the piston was sloppy in the cylinder. After $1,700 i left the shop with a loud tapping engine. I havent completely disassembled it in case someone wants a rebuilder but may get bored and have it apart soon to see if anything else may be the cause. Have you tried unplugging your injectors and plug wires one by one to narrow it down to a single cylinder? Thats how i finally found where my noise was coming from.
 

HawkX66

Member
Mar 20, 2017
51
1
8
Michigan & Mass
Mar 27, 2017
#8
  • Mar 27, 2017
  • #8
Drich35 said:
impossible noise to pinpoint. Mine sounded like center engine at the intake. I replaced all lash adjusters and timing tensioners twice. When i took mine apart the heads and valves all looked good. There was some scoring on cylinder 5 and the piston was sloppy in the cylinder. After $1,700 i left the shop with a loud tapping engine. I havent completely disassembled it in case someone wants a rebuilder but may get bored and have it apart soon to see if anything else may be the cause. Have you tried unplugging your injectors and plug wires one by one to narrow it down to a single cylinder? Thats how i finally found where my noise was coming from.
Click to expand...
That's what is keeping me from thinking it's the short block. I unplugged each cylinder, one at a time, and there was no difference. The previous owner of my car obviously never did an oil change. There was sludge everywhere and the number 8 plug is frozen in the head still. My next step will probably be to yank the heads. I'd rather not right now though... I do all my own work, so it's really just time.
 
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