1979 2.3L Mustang

Danz

New Member
Jun 21, 2002
31
0
0
34
California
www.lod3d.net
I inherited a 1979 2.3L Mustang, it has a 2BBL Holley 5200 carb I think. It hadnt run in a couple years... it looks like a lot of failure parts were replaced somewhat recently. So far since I have got it, I replaced the mechanical fuel pump, fuel filter a couple times, new gas, new battery, and new plugs. I took apart the carb and all parts seem to be up to date and rebuilt some years ago. I can start it ok but after about 20 seconds, the idle starts to drop, the engine bucks hard and eventually shuts off. A little white mist comes out the carb and some white misty smoke comes out from under the exhaust manifold. I checked the electric choke and it is getting about 6.23V, so Im not sure whats wrong. Any ideas?
 
  • Sponsors(?)


Delray Dude

New Member
Jul 7, 2010
263
1
0
could be that the float level is set too high (or stuck float) and is flooding the intake manifold with fuel causing it to run fine for a few minutes and then flood out - giving the bucking you describe.
 

FVBonura

Member
Oct 7, 2010
41
1
6
52
I had this problem with my '85 2.3. Make sure the screws between the throttle plate and air horn are tight. They are famous for vibrating loose.

Take off your air cleaner and grab the carb with your hand tightly then try to move it. If the carb has play, 90% of the time its the base plate being loose from the air horn. Major vacuum leak!!! I used LOCTITE thread-locker on the screws and the problem never came back.

While the carb is off and you are tightening the throttle plate screws (torx), make sure all the screws all over the carb are good and tight. These carbs are known for vibrating loose.

Also if you are having problems restarting the engine after a long drive, in the summer, you need a phenolic spacer between the carb and manifold to displace heat and some high-temp insulation on your fuel line from the fuel pump to the carb.

I hope this helps... :D
 
Thread starter Similar threads Forum Replies Date
Nick Bos Can I fit a 1979-1986 C4 Nuetral Safety Switch to my 1970 mustang C4? 1965 - 1973 Classic Mustangs -General/Talk- 1
1 Fox 1979 mustang cobra. (4cyltl turbo) 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 19
02 281 GT 1979 Mustang Collector Tray 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 4
W1ck3dStang93 1979-04 Ford Mustang Seat Track To Seat Bolt Fox 5.0 Mustang Tech 3
B Expired 1979 Mustang Indy 500 Pace Car Fox Body Mustangs For Sale (1979-93) 0
elarm1 Expired 1979-95 Ford Mustang Crane 1.7 Ratio Roller Rockers Engine and Power Adder 0
M 1979 Mustang Pace Car The Welcome Wagon 3
des89stang SOLD 1979-93 Mustang Haynes Manual, 89-93 Chiltons' Repair Manual Other Classifieds 4
W Expired 1979 Mustang Hatch Roller Fox Body Mustangs For Sale (1979-93) 1
G Expired 1979 Mustang Indy Pace Car Fox Body Mustangs For Sale (1979-93) 0
MRaburn 1979-93 Ford Mustang pony wheels from Latemodel Restoration StangNet Site News 0
1989DropTop 1979 Mustang Coupe Fox Body Mustangs For Sale (1979-93) 1
W 1979-1993 ford mustang 8.8 rearend 4-sale Drivetrain Parts 0
MRaburn LRS 1979-93 Ford Mustang water pump & timing cover hardware kit StangNet Site News 1
J For Sale: Mustang Manuals for 1979 & 2008 Other Classifieds 1
qwk37 SOLD 1979-1993 Mustang Parts Garage Sale Interior Exterior Parts 20
R 1979-1986 Mustang 140 MPH SPEEDO Interior Exterior Parts 2
B 1979 FORD MUSTANG PACE CAR Fox Body Mustangs For Sale (1979-93) 0
strtrcr50 I was just in CVS and found a magazine named 1979-'93 Mustang Performance 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 62
L 1979-1993 5.0 Mustang what is it? 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 25
KDK1988GT Eibach Pro-Street Coil Over/Spring Damper Kit 1979-2004 Mustang ?? 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 0
KDK1988GT Eibach Pro-Street Coil Over/Spring Damper Kit 1979-2004 Mustang ?? Fox 5.0 Mustang Tech 1
G 1979 mustang cobra... RIP.... pics 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 14
GSP393 Hurry Bid Now.....1979 FORD MUSTANG PACE CAR..TURBO..4 SPD..ORGINAL..N/R 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 0
GSP393 Hurry Bid Now.....1979 FORD MUSTANG PACE CAR..TURBO..4 SPD..ORGINAL..N/R 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 19
Jason_mustang88 1979 Mustang Fox 5.0 Mustang Tech 8
monsterstang70 1979 mustang GT makeover Fox 5.0 Mustang Tech 65
MuSTaNGPLaYR 1979 Mustang Fuse Panel Location? Fox 5.0 Mustang Tech 7
T 5.0 1979 gt40 ceter port Fox 5.0 Mustang Tech 2
M 1979-93 SUNROOF FRONT PLASTIC BRACKETS FOR SUNROOF RETAINING CLIPS, LH & RH 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 6
kjohnson1 For Sale 1979 - 1986 Center Console Interior Exterior Parts 0
T 1979 pinto bubble window 4 speed in a 67 coupe? 1965 - 1973 Classic Mustangs -General/Talk- 7
S 1979 Fox Body Capri Tranny Update to T5 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 7
LiquidStangs Brakes 1979-1986 Fox Parking Brake Adjustment Fox 5.0 Mustang Tech 1
JosTee Introducing myself and seeking tips how to repair my 1979 Foxbody chrome strips 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 6
ZephyrEFI 1979 Mercury Zephyr ES w/ GT40 SEFI 5.0L T-5 & 8.8 The Welcome Wagon 2
N Question about headlights switch (1979 - 1981) 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 1
G Engine 1979 FORD 302 & 2150 Question, wont start when hot 1974 - 1978 Mustang II Talk & Tech 2
T trying to use 1979 clutch facing and pressure plate on 1978 flywheel 1974 - 1978 Mustang II Talk & Tech 17
proud_veteran1961 1979 4 Eyed Coupe (need Help W/bumper Cover) 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 20
des89stang Expired 1979-1993 Stock Items, Great For Restoration. Engine and Power Adder 14
B Expired 1979 Coupe Fox Body Mustangs For Sale (1979-93) 3
C 1979 Indy Pace Car The Welcome Wagon 1
Desert Stallion Expired 1979 Fairmont Futura Coupe, 351w Roller Motor Other Classifieds 0
K 1979 Pace Car For Sale Fox Body Mustangs For Sale (1979-93) 2
R 1979-86 parking brake 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 0
N 1979-1993 Trunk / Hatch Support Shocks New Interior Exterior Parts 1
T 1979 ModFox 5.4 Twin Turbo Mach 1 Re-creation Fox Body Mustangs For Sale (1979-93) 4
nynce Parting out 1979-86 Fox Body Coupe Interior Exterior Parts 3
F 1979 mercury capri 2500.00 Fox Body Mustangs For Sale (1979-93) 9
Similar threads