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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Need help identifying problem

  • Thread starter Thread starter Deleted member 38176
  • Start date Start date Apr 27, 2011
D

Deleted member 38176

Apr 27, 2011
#1
  • Apr 27, 2011
  • #1
I'll try to describe it as best as I can. Hopefully someone has some kind of idea what happened.....

I was a few blocks away from my house when I heard a pop from the engine and the car started to sound like a loud steam locomotive (fast paced cha cha cha cha). I limped home, popped the hood and couldn't find the problem. The car seems to drive (accelerate) fine but the more gas I give it the louder and faster the sound gets. It seems to be coming from the passenger-side area of the motor.

At first I thought I broke a timing chain but the more I think about it the more I dont think thats the issue. I thought maybe I blew a gasket but theres no fluid anywhere.

I realize this is kind of a vague description but any help is appreciated. I'll try to get a video of it later on tonight.

 

RedDaemon

10 Year Member
Mar 31, 2005
3,470
9
108
Atlanta, GA
Apr 27, 2011
#2
  • Apr 27, 2011
  • #2
sound like this?

YouTube - 2002 Mustang GT Spun Rod Bearing
 
D

Deleted member 38176

Apr 27, 2011
#3
  • Apr 27, 2011
  • #3
RedDaemon said:
sound like this?

YouTube - 2002 Mustang GT Spun Rod Bearing
Click to expand...

No it doesn't, THANK GOD. The best way I can describe it is like a LOUD choo choo train (cha cha cha cha cha cha cha). The sound is LOUD!

....oh and the motor shakes at idle.
 

trinity_gt

10 Year Member
Jan 31, 2003
3,125
81
99
Canada
Apr 27, 2011
#4
  • Apr 27, 2011
  • #4
I'm going to say you blew a spark plug out.

Carefully inspect the COPs. Are they all seated? Pull each one out and check the plugs...
 
D

Deleted member 38176

Apr 27, 2011
#5
  • Apr 27, 2011
  • #5
trinity_gt said:
I'm going to say you blew a spark plug out.

Carefully inspect the COPs. Are they all seated? Pull each one out and check the plugs...
Click to expand...

All of the COP's seem like they're seated fine except for two, one on th drivers side and one on the passenger side. The one on the passenger side is broken off where the screw secures it to the head.

I pulled both out and inspected the plugs. The plugs LOOK fine. Is there anything in particular I should be looking for?

This is the passenger side COP (it looks trashed)
sorry about the quality (POS phone)
 

RedDaemon

10 Year Member
Mar 31, 2005
3,470
9
108
Atlanta, GA
Apr 27, 2011
#6
  • Apr 27, 2011
  • #6
trinity was suggesting to just make sure the spark plugs are secure. the sound could be from one plug being loose and rattling around. If one is loose it could shoot through your hood
 

trinity_gt

10 Year Member
Jan 31, 2003
3,125
81
99
Canada
Apr 27, 2011
#7
  • Apr 27, 2011
  • #7
Yep. Ask yourself how the end of that COP boot got burned like that.

Check the plug in that hole...
 

Dark04GT

10 Year Member
Apr 27, 2008
758
62
59
NC
Apr 27, 2011
#8
  • Apr 27, 2011
  • #8
That COP has seen better days.
 

joshjwc9

Active Member
Jun 12, 2006
1,095
17
39
Palm Harbor, FL
Apr 27, 2011
#9
  • Apr 27, 2011
  • #9
Replace that COP and boot. Retighten all plugs and go from there. If the plugs start to back out before they blow out they make a ticking sound that increases with RPM's. I've been there dude. If the ticking continues try disconnecting the COP and seeing if the plug isn't misfiring or something of that sort.
 
D

Deleted member 38176

Apr 27, 2011
#10
  • Apr 27, 2011
  • #10
trinity_gt said:
Yep. Ask yourself how the end of that COP boot got burned like that.

Check the plug in that hole...
Click to expand...

Actually, that "mess" on the end of that boot is electrical tape. Dont ask me why its there......

joshjwc9 said:
Replace that COP and boot. Retighten all plugs and go from there. If the plugs start to back out before they blow out they make a ticking sound that increases with RPM's. I've been there dude. If the ticking continues try disconnecting the COP and seeing if the plug isn't misfiring or something of that sort.
Click to expand...

Im done messing with it tonight. I'll get back on it tomorrow. I did notice a slight ticking sound before this happened but attributed it to a problem with the timing chain and guides. I haven't gotten down into the plug wells to check the plugs yet (I will tomorrow), but the plugs look secure.

I just got the car back today after a week (installed full exhaust and had the rack & pinion changed) and now this happens
 

johnnyt03gt

5 Year Member
Mar 15, 2008
453
5
29
dallas TX
Apr 28, 2011
#11
  • Apr 28, 2011
  • #11
also, may just check oil for clues. mettle/water/gas/
 
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