• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Stratching my head!

  • Thread starter Thread starter Ncm77589
  • Start date Start date Nov 8, 2010
N

Ncm77589

New Member
Nov 8, 2010
1
0
0
Nov 8, 2010
#1
  • Nov 8, 2010
  • #1
I looked around and I hope this belongs here I know sometimes people put carbs in there own category because fuel injections is pretty much the stuff now.

I am new to carbs and need some help. I have done some research and need to know if this is correct..

So I have a 302 with a 650 cfm Edelbrock Carb

I think my motor is running rich because...
-There is a smell of gas.
-I get a white smoke from the pipes only when i sit at an idle.
-The smoke does not give me the appearance of coolant or oil really.
-The tailpipes have what seems like quite a bit of carbon build up.
-My plugs appeared to have a dark liquid carbon build up on them.

To fix this I need to...
-Get a vacuum gauge and hook it up to the carb.
-Turn down the tuning screws (sorry don't know the term.)
-Unscrew them until I get a higher vacuum and stop when the vacuum drops again.

Since I mentioned the exhaust I should mention it has no smog pump or cats. Just pipes and a couple glass packs. I am working on replacing the exhaust. But I am in college. So time and money are short at the moment.

Is this all sounding right? what is your guys opinions? I feel I could have a bad seal in the motor and oil could be getting in but its not constant. I also feel it could be the valve stem seals but once again it only smokes on the idle. Hope I gave enough details and what not so you guys can help me out.

Thanks in advance guys.
 
2

2002BLGT

Well-Known Member
Dec 18, 2003
2,945
4
59
Bedford VA
Dec 10, 2010
#2
  • Dec 10, 2010
  • #2
Ncm77589 said:
I looked around and I hope this belongs here I know sometimes people put carbs in there own category because fuel injections is pretty much the stuff now.

I am new to carbs and need some help. I have done some research and need to know if this is correct..

So I have a 302 with a 650 cfm Edelbrock Carb

I think my motor is running rich because...
-There is a smell of gas.
-I get a white smoke from the pipes only when i sit at an idle.
-The smoke does not give me the appearance of coolant or oil really.
-The tailpipes have what seems like quite a bit of carbon build up.
-My plugs appeared to have a dark liquid carbon build up on them.

To fix this I need to...
-Get a vacuum gauge and hook it up to the carb.
-Turn down the tuning screws (sorry don't know the term.)
-Unscrew them until I get a higher vacuum and stop when the vacuum drops again.

Since I mentioned the exhaust I should mention it has no smog pump or cats. Just pipes and a couple glass packs. I am working on replacing the exhaust. But I am in college. So time and money are short at the moment.

Is this all sounding right? what is your guys opinions? I feel I could have a bad seal in the motor and oil could be getting in but its not constant. I also feel it could be the valve stem seals but once again it only smokes on the idle. Hope I gave enough details and what not so you guys can help me out.

Thanks in advance guys.
Click to expand...

I would advise getting a wideband to get the air/fuel corrected if you dont have the edelbrock calibrating kit with the rods and jets to adjust the actual fuel flow then you may want to get it when you get the wideband
 
You must log in or register to reply here.

Similar threads

L
Engine 85 GT Excessive Idle
  • lutzkecj
  • Sep 18, 2026
  • Fox 5.0 Mustang Tech
Replies
5
Views
346
Fox 5.0 Mustang Tech Sep 21, 2026
86HO5.0
8
T
Oil burning on my recently buil 302
  • The blk67
  • May 15, 2026
  • Fox 5.0 Mustang Tech
Replies
3
Views
236
Fox 5.0 Mustang Tech May 15, 2026
Noobz347
D
Engine 85 GT Backfires through Carb
  • DienstXIV
  • Oct 3, 2025
  • Fox 5.0 Mustang Tech
Replies
19
Views
966
Fox 5.0 Mustang Tech Oct 7, 2025
85GTStangGuy
J
Emission problems
  • jls.zmmr
  • Feb 5, 2026
  • 1994 - 1995 Specific Tech
Replies
2
Views
329
1994 - 1995 Specific Tech Feb 7, 2026
AeroCoupe
S
Engine Edelbrock 1406 install help
  • scottcarp10
  • Dec 11, 2025
  • Fox 5.0 Mustang Tech
Replies
4
Views
382
Fox 5.0 Mustang Tech Dec 15, 2025
scottcarp10
S
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?