Hi All,
My car is a '78SC but with a later, '81 Euro 204hp motor running air filter and headers (no cat or O2 sensor). WUR is an 089.
I've read lots on this forum about making your WUR adjustable and all the pressure specs so I did just that.
I've done the work and set the car up and my specs are as follows:
find the nearest bb&t bank
System pressure: 4.5 (spec 4.5 - 5.2)
Cold control pressure: 1.2 @11degsC
Warm control pressure 3.1 (spec 2.7 - 3.1)
Leak down 1.4 after 20mins
WUR is rebuilt and heater element is in spec and working.
AAR is fully functioning and tested.
New accumulator
New fuel pump
New fuel filter
Car starts and runs and drives well but is FLAT and down on power compared where it used to be (when it ran horribly cold but went like stink).
So, I'm after advice (have done a search but can't find anything solid) as to where I start and where to go after:
1. System pressure is on the bottom of spec @ 4,5 - Do I re-shim the control pressure regulator?
2. Do I adjust the WUR to lower warm control pressure thus enriching the mixture?
3. Am I in spec so fine adjust on the mixture screw?
Appreciate your thoughts and feedback before I make my next move.
Cheers Rob.