Running Rich?

86GT · 03-21-2001, 10:26 AM

I was wondering how to detect a rich condition, or if the F cam was the reason for it. Anyways, what happens is that the car seems to bog when I try to drop the hammer, then I can smell the fuel. I believe fuel pressure was set at 44lbs with a 110lph pump. I've recently put in a 190lph, so would that cause a rich condition?
Any suggestions?

Fox Body · 03-21-2001, 10:43 AM

Check simple things first:

When you get down on it, does much black smoke come out the exhaust?

If you think you're running rich, pull a spark plug and if it's dark (black) then you're rich.

If it's bogging down when you get down on it then it could be a clogged fuel filter.

-------------------------------
'79 Mustang Coup
4" Cowl
Weld wheels (15x6;15x8)
Stock 5.8L
C4 w/ shift kit
1.5" MAC full length headers
Holley 750 CFM
Edelbrock intake
2.5" Off road H-pipe, 2-chamber Flowmasters
8.8" Rear end w/ 3.55 gears (Now that's more like it!!)

Front: 225/60/15 Rear: 255/60/15 Eagle GT II
14 x 4” K&N air filter (getting the Xtreme setup soon)

"Red, thou art my companion. Hasten now your quickened metamorphosis to Green that I may conquer all who dare abide there beside me. May they be left thither behind burnt black." ---Fox Body

LX XLR8R · 03-21-2001, 12:30 PM

what mods do you have..do you need 44psi fule pressure..you should use the least amount of fp needed(i.e. keep lowering it till it cuts out up top then put it back to the last adjustment b4 that

------------------
1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..
AIM=onesillynotch

86GT · 03-21-2001, 03:13 PM

Right now, I've got Edelbrock Heads, F-cam, Ported performer intake, 24lb injectors, C&L 73mm meter calibrated for injectors, 190lph fuel pump, AFPR, 65mm t/b and spacer, windage tray, h/v h/p oil pump, accel 300+ ignition box and system. Shorty headers, off-road H-pipe and catback.

When I get on it it doesn't really puff any smoke at all. It just smells like there's an excess of fuel from the engine, could that just be from the off-road H-pipe not burning all the fuel and a slight rich condition?

03-21-2001, 10:26 AM	#1
86GT Sniffed too much n20 Join Date: Oct 1998 Location: Ont, Canada Posts: 1,018	Running Rich? I was wondering how to detect a rich condition, or if the F cam was the reason for it. Anyways, what happens is that the car seems to bog when I try to drop the hammer, then I can smell the fuel. I believe fuel pressure was set at 44lbs with a 110lph pump. I've recently put in a 190lph, so would that cause a rich condition? Any suggestions?

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03-21-2001, 10:43 AM	#2
Fox Body Mustang Maniac Join Date: Sep 2000 Location: GA, U.S.A Posts: 2,266	Check simple things first: When you get down on it, does much black smoke come out the exhaust? If you think you're running rich, pull a spark plug and if it's dark (black) then you're rich. If it's bogging down when you get down on it then it could be a clogged fuel filter. ------------------------------- '79 Mustang Coup 4" Cowl Weld wheels (15x6;15x8) Stock 5.8L C4 w/ shift kit 1.5" MAC full length headers Holley 750 CFM Edelbrock intake 2.5" Off road H-pipe, 2-chamber Flowmasters 8.8" Rear end w/ 3.55 gears (Now that's more like it!!) Front: 225/60/15 Rear: 255/60/15 Eagle GT II 14 x 4” K&N air filter (getting the Xtreme setup soon) "Red, thou art my companion. Hasten now your quickened metamorphosis to Green that I may conquer all who dare abide there beside me. May they be left thither behind burnt black." ---Fox Body

03-21-2001, 12:30 PM	#3
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	what mods do you have..do you need 44psi fule pressure..you should use the least amount of fp needed(i.e. keep lowering it till it cuts out up top then put it back to the last adjustment b4 that ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch

03-21-2001, 03:13 PM	#4
86GT Sniffed too much n20 Join Date: Oct 1998 Location: Ont, Canada Posts: 1,018	Right now, I've got Edelbrock Heads, F-cam, Ported performer intake, 24lb injectors, C&L 73mm meter calibrated for injectors, 190lph fuel pump, AFPR, 65mm t/b and spacer, windage tray, h/v h/p oil pump, accel 300+ ignition box and system. Shorty headers, off-road H-pipe and catback. When I get on it it doesn't really puff any smoke at all. It just smells like there's an excess of fuel from the engine, could that just be from the off-road H-pipe not burning all the fuel and a slight rich condition?