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Engine Exhaust Spitting On Ground

  • Thread starter Thread starter Martman
  • Start date Start date Jul 20, 2016
M

Martman

Active Member
Jun 20, 2016
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Louisville, KY
Jul 20, 2016
#1
  • Jul 20, 2016
  • #1
First a little info:
Recently purchased
91 GT 5 speed
all stock except CAI and pulleys (still has smog and A/C)
PO says the timing is at 14 but I have not confirmed
73K miles
I honestly think it has been driven fairly hard or not had great maintenance.


So as I was working on the A/C today with it idling for awhile (5-7 minutes) in the garage I noticed the black soot on the ground from the left exhaust only.

I am suspecting valve seats but I don't notice any smoke. Could this also be a sign of running rich or some other problem? Seemed to have a lot of condensation as well but the oil didn't indicate a head gasket problem when I changed it the other day. Car idles pretty well and performs ok but not great (of course it is stock compared to the 90 LX I had many moons ago).

I am not too concerned with it right now as my goal is to get chassis components refreshed/upgraded including sub frame connectors. Just curious so I can get myself edumacated.

 

jrichker

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Jul 21, 2016
#2
  • Jul 21, 2016
  • #2
Dump codes sticky.
Look at the top of the 5.0 Tech forum where the sticky threads are posted. One of them is how to dump the computer codes. http://www.stangnet.com/mustang-for...codes-from-eec4-in-86-95-5-0-mustangs.889006/ I highly suggest that you read it and follow the instructions to dump the codes.
 
M

Martman

Active Member
Jun 20, 2016
163
23
28
Louisville, KY
Jul 21, 2016
#3
  • Jul 21, 2016
  • #3
Most certainly had planned to do that tonight. Just curious if this initial pic causes something to jump out at them. Thanks for the guidance.
 

Black1987

my wife Bedazzled my input shaft
15 Year Member
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Jul 21, 2016
#4
  • Jul 21, 2016
  • #4
Martman said:
Most certainly had planned to do that tonight. Just curious if this initial pic causes something to jump out at them. Thanks for the guidance.
Click to expand...

Does it have an O/R H or x pipe by chance? It could just be carbon in pipes and condensation (moisture) dripping out of the exhaust carrying the carbon with it. Follow the jrichker advice and also look at the plugs to see if its running rich.
 
M

Martman

Active Member
Jun 20, 2016
163
23
28
Louisville, KY
Jul 21, 2016
#5
  • Jul 21, 2016
  • #5
All stock with original h pipe and cats. I will dump the codes tonight and try to check plugs if the engine can cool before bedtime. Lol

Sent from my Nexus 6 using Tapatalk
 
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