85 mustang lx 5.0 is having problems!

travis_ranger2000 · September 17th, 2011, 12:46 PM

I just bought a sweet 85 lx 5.0 and it's not running as good as it should, now here is the deal it has sat for 2 yrs, so I changed plugs, oil, and thermistat, took the shorty headers, and cat off and installed BBK long tubes with 2.5 inch exaust with flowmasters. The car does not seem to have much power and smokes going down hills without giving it gas. I have not put the oxygen sensor back in yet, would this make it smoke? It does have the throttle body type carb. Can someone also tell me the fireing order, and what the timing should be set at? Thanks for any help.

Stevo077 · September 17th, 2011, 01:11 PM

1-3-7-2-6-5-4-8 i do believe. And the timing all just depends on your set up

travis_ranger2000 · September 17th, 2011, 01:17 PM

The engine is all stock except the bbk long tubes.

Stevo077 · September 17th, 2011, 01:23 PM

I believe the stock 5.0 figure is 10*BTDC, with the SPOUT connector disconnected. Don't forget to reconnect it when you're done.

Stevo077 · September 17th, 2011, 02:26 PM

Is it still the same gas that came with your car?

travis_ranger2000 · September 17th, 2011, 06:20 PM

It was the same gas as of this morning, had 3/4 tank when I got it and finally ran it out and put 93 oct in it. Got the oxygen sensor in and is still smoking when going down a hill and then excellerating out? I did buy some lucas oil treatment to help seal anything inside, but can't tell if it fuel overload?

travis_ranger2000 · September 19th, 2011, 10:00 AM

I'm still trying to figure this thing out! The car now has 17x9's or 10's cobra look alikes and came factory with 14", what gear should I put in it to get power back? 327 factory gear, AOD trans and 17 inch wheels. It has alot of pull if easing into the throttle but if you floor board it, bogs and feels like it misses? Thanks for any imput.

Stevo077 · September 19th, 2011, 10:03 AM

4.10s

ryanw · September 19th, 2011, 11:18 PM

i didnt know that 85 had an O2 sensor. I had an 85 gt a long time ago but i never worked on it. I know that the 85 had a computer in the passenger side kick panel, but the car would still run with the computer pulled out

September 17th, 2011, 12:46 PM	#1
travis_ranger2000 Newbie 87 GT Join Date: Oct 2010 Location: Bedford, IN Posts: 44 iTrader: 0 reviews	85 mustang lx 5.0 is having problems! I just bought a sweet 85 lx 5.0 and it's not running as good as it should, now here is the deal it has sat for 2 yrs, so I changed plugs, oil, and thermistat, took the shorty headers, and cat off and installed BBK long tubes with 2.5 inch exaust with flowmasters. The car does not seem to have much power and smokes going down hills without giving it gas. I have not put the oxygen sensor back in yet, would this make it smoke? It does have the throttle body type carb. Can someone also tell me the fireing order, and what the timing should be set at? Thanks for any help.

September 17th, 2011, 01:11 PM	#2
Stevo077 Regular 1990 Mustang GT Join Date: Jun 2011 Location: NE Oklahoma Posts: 123 iTrader: 0 reviews	1-3-7-2-6-5-4-8 i do believe. And the timing all just depends on your set up __________________ 1990 Mustang GT

September 17th, 2011, 01:23 PM	#4
Stevo077 Regular 1990 Mustang GT Join Date: Jun 2011 Location: NE Oklahoma Posts: 123 iTrader: 0 reviews	I believe the stock 5.0 figure is 10*BTDC, with the SPOUT connector disconnected. Don't forget to reconnect it when you're done. __________________ 1990 Mustang GT

September 17th, 2011, 02:26 PM	#5
Stevo077 Regular 1990 Mustang GT Join Date: Jun 2011 Location: NE Oklahoma Posts: 123 iTrader: 0 reviews	Is it still the same gas that came with your car? __________________ 1990 Mustang GT

September 19th, 2011, 10:03 AM	#8
Stevo077 Regular 1990 Mustang GT Join Date: Jun 2011 Location: NE Oklahoma Posts: 123 iTrader: 0 reviews	4.10s __________________ 1990 Mustang GT

September 17th, 2011, 01:17 PM	#3
travis_ranger2000 Newbie 87 GT Join Date: Oct 2010 Location: Bedford, IN Posts: 44 iTrader: 0 reviews	The engine is all stock except the bbk long tubes.

September 17th, 2011, 06:20 PM	#6
travis_ranger2000 Newbie 87 GT Join Date: Oct 2010 Location: Bedford, IN Posts: 44 iTrader: 0 reviews	It was the same gas as of this morning, had 3/4 tank when I got it and finally ran it out and put 93 oct in it. Got the oxygen sensor in and is still smoking when going down a hill and then excellerating out? I did buy some lucas oil treatment to help seal anything inside, but can't tell if it fuel overload?

September 19th, 2011, 10:00 AM	#7
travis_ranger2000 Newbie 87 GT Join Date: Oct 2010 Location: Bedford, IN Posts: 44 iTrader: 0 reviews	I'm still trying to figure this thing out! The car now has 17x9's or 10's cobra look alikes and came factory with 14", what gear should I put in it to get power back? 327 factory gear, AOD trans and 17 inch wheels. It has alot of pull if easing into the throttle but if you floor board it, bogs and feels like it misses? Thanks for any imput.

September 19th, 2011, 11:18 PM	#9
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	i didnt know that 85 had an O2 sensor. I had an 85 gt a long time ago but i never worked on it. I know that the 85 had a computer in the passenger side kick panel, but the car would still run with the computer pulled out __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

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