Hi Everyone,
Just recently purchased a 89 LX from a guy who did not know much about it and has sat for ~5 years.
My Father and I drained old gas (orange color) and changed the fuel pump. It now has 35-40psi fuel pressure, will turn over, start but run poorly.
We are having two main problems, engine noise (roller rocker arm? Distributor?) and running really rich. Do not think they are related... The car is running so rich our eyes and nose kill after having it run, also the tail pipes are coated with carbon & plugs were very black. Think this was a problem from day one for the guy who we bought the car before, then he just parked it, let sit...
Some details about mods on the car.
Walbro 255LPH fuel pump
Pro-m Mass Air Meter - PFT - 77 - similar to now Pro M 80. says its calibrated for 24lb injectors
EGR block off plate
24LB Fuel Injectors
Comp Cams roller rocker arms (we recently adjusted, couple were loose) - turned motor over until exhaust value started to move, then cranked the motor until the intake almost was returned to the home position, then adjusted the exhaust rocker. Making sure push rod to have zero lash, then turned the nut half turn, lastly tightened the Polly lock.
Ford B303 Cam
Ford shorty headers
Saleen plug wires
New spark plugs
Timing at 10 degree BTC
TPS 1.032V
Idle Air Control should be good, reset it.
Stock A9L computer
KOEO pulling codes: 11 10 15. Did disconnect the battery and connected it to a charger, causing 15?
KOER did not pull any codes... which seemed very odd..??
Have thought of looking into Pro-m & mirco/megasquirt computers. Our gut feeling it does not know how much air/fuel its getting then rich, computer issue. We also think the noise might be a bad rocker arm.
Plan on testing the MAF sensor (voltage & ohms) in near future | https://foxstang.com/complete-efi-sensors-fox-mustang-eec/
Please see the attached sound clip..
Any suggestions or recommendations would be helpful if anyone has had this in the past.
Just recently purchased a 89 LX from a guy who did not know much about it and has sat for ~5 years.
My Father and I drained old gas (orange color) and changed the fuel pump. It now has 35-40psi fuel pressure, will turn over, start but run poorly.
We are having two main problems, engine noise (roller rocker arm? Distributor?) and running really rich. Do not think they are related... The car is running so rich our eyes and nose kill after having it run, also the tail pipes are coated with carbon & plugs were very black. Think this was a problem from day one for the guy who we bought the car before, then he just parked it, let sit...
Some details about mods on the car.
Walbro 255LPH fuel pump
Pro-m Mass Air Meter - PFT - 77 - similar to now Pro M 80. says its calibrated for 24lb injectors
EGR block off plate
24LB Fuel Injectors
Comp Cams roller rocker arms (we recently adjusted, couple were loose) - turned motor over until exhaust value started to move, then cranked the motor until the intake almost was returned to the home position, then adjusted the exhaust rocker. Making sure push rod to have zero lash, then turned the nut half turn, lastly tightened the Polly lock.
Ford B303 Cam
Ford shorty headers
Saleen plug wires
New spark plugs
Timing at 10 degree BTC
TPS 1.032V
Idle Air Control should be good, reset it.
Stock A9L computer
KOEO pulling codes: 11 10 15. Did disconnect the battery and connected it to a charger, causing 15?
KOER did not pull any codes... which seemed very odd..??
Have thought of looking into Pro-m & mirco/megasquirt computers. Our gut feeling it does not know how much air/fuel its getting then rich, computer issue. We also think the noise might be a bad rocker arm.
Plan on testing the MAF sensor (voltage & ohms) in near future | https://foxstang.com/complete-efi-sensors-fox-mustang-eec/
Please see the attached sound clip..
Any suggestions or recommendations would be helpful if anyone has had this in the past.