Saving a 5.0. Need advice.
Alright well i got a 94 5.0 Mustang in a trade. It's in pretty rough shape so i won't spare details if i can.
-170k miles on the clock
-Unknown rear sized gears
-17" cobra rims w/ new cooper zeons (Speedo is off by 15mph, at around 80 i'm actually going 65 i use a GPS to clock the speed atm)
-Clutch isn't stock apparently, and clutch pedal is extremely stiff.
-Motor runs pretty strong
-Transmission shifts well into every gear (In 5th gear around actual 80mph it vibrates sometimes, possible clutch vibration?)
-A/C was deleted, dryer is still remaining i have no idea if the condenser is still their as the Radiator is a new aftermarket one with a pressure relief cap)
-Smog pump is still connected to the belt but the hose disconnected and bypassed at it's upper connections.
-Long tube headers are on the car (Don't know if that's stock for this year, don't look after market)
-Exhaust after the LTH are ghetto side pipes that are ghetto welded up and are terribly loud and have leaks. o2 sensors hooked up and i rewired it for better connections as the previous owner did a ghetto extension. Looks like there are some things next to the o2 sensors that are broken off...some sort of port? No idea....No CEL concerning these.
-Timing is terrible atm, i'll cover that next.
-According to a mustang tech at work he said my injectors do not look anywhere near stock and look larger. It may seem he's right. First things first, the Oil breather and IAC were cleaned and are functional, then we checked timing. Timing at stock 10 degrees was terrible, misfired and nearly died out. I set it currently to 20 degrees and it idles a lot better but loses a lot of power and almost dies out but if i put my foot down it gets all its power back. Now here's the worst problem, It's running extremely rich and burning through fuel extremely fast. We are talking VERY fast. Fuel pressure regulator is stock.
-Before i came to this conclusion i checked the spark plugs and pulled all the old ones out. They were gapped at .040's and couldn't idle AT ALL. I changed em all to new ones set to .052's and it idles wonderful around 750. I really need to fix this problem as well as find some stock exhaust piping from headers back with cats so i can pass emissions this month....
-Interior of the car is mint.
-Exterior needs love.
-Front end is pretty good but probably is going to need tie rods soon, alignment is straight as well as good suspension/shocks/struts.
-All in all if i drive fast it drives fantastic with no knocks.
-Engine has fresh oil in it.
-Brakes are all in good shape.
Any advice on the fuel, timing, exhaust issues much appreciated.
If there's any info needed let me know to help find this out.