[urq] Running problems caused by "leaning out" 83 urq.

[Ado Sigal]

John Bird wrote:

>The regulated fuel pressure is 1 bar cold and 3.9 bars when hot; when 
>the car passes 2.00 bars we get lean out and the car will not run 
>without stumbling and spluttering. Mixture is too lean. By disconnecting 
>the electrical regulator of the warm up plug, we can extend the driving 
>time of the engine before the regulated pressure is too high for the 
>engine to run properly. The heat of the engine then comes into play, as 
>the ambient temperature will cause the regulator to warm up.
>
>John B.
>
>  
>
 What is the sys. pressure? Your cold sys. press. is low. If you haven't 
got CIS press. values, can find them here: 
 http://www.sjmautotechnik.com/trouble_shooting/ficis.html#fuelp
 Check FPR "O" rings, and if WR diaphragm holds vacuum and pressure (via 
tube that connects it to the enrichment solenoid valve).

HTH,

Ado