How it drives:
Idles rough, but as soon as you touch the throttle it disappears. Performance is slower than should be (iWrock has driven my car). Can't feel any misfiring when accelerating...its all at idle.
Static Tests:
-Throttle Plate adjusted + centered correctly.
-Fuel Pressure perfect (5.4bar 4.9bar + holds 3bar after 30mins on specs)
-Airflow Potentiometer reads .7v, dead on specs.
-No error codes
-No vacuum leaks
-Mixture tried/set all different configurations. Settled with 50%
-Compression perfect.
-EZL reads 85% engine off ignition on. WOT reads 20%
-I get ~15MPG average so fuel economy lower than it should be. With 140miles Freeway, 30miles City I get 17MPG.
-Slower than the car should be performance-wise
Parts swapped/replaced:
New OVP
New Coolant Temperature Sensor
New Voltage Regulator
New Injector's+Seals
New Non-Resistor H9DCO's Spark Plugs
New Ignition Wires (checked for arching as well)
New Distributor Rotor + Cap
New Fuel Filter
New Breather Hoses
New Ignition Coil
New O2 sensor
New Motor Mounts
New Head gasket + valve job -- Compression 190psi across the board.
Swapped Jetronic Brain /w used one
Swapped Fuel Pump Relay /w used one
Swapped Cold Start Valve /w used one (in case it was leaking)
Swapped EZL /w used one
I don't understand why I still have this rough idle
Many of you have helped me through this and a lot of the things I have replaced were bad/old or improved the engine in some way or another so I don't feel bad spending the money...I just want my smooth idle!!
I don't know if there any more static tests I can do on this?
Honestly what the hell is left that could be causing this??
Not sure where to go from here....
I don't know if I should just take it to the dealership? I'm afraid they wont find anything as I have gone over much of the stuff they will check for...?
Can I rule off the fuel distributor if the fuel pressure is okay?