sparkie

Hi all,
I warm up regualtor has just gone south <img src="graemlins/crying.gif" border="0" alt="[crying]" />

I was wondering if i should go for the Original Bosch Warm Up Regualtor ($224) or the adjustable fuel regulator ($175-$199)
My car is an 1982 928S Euro spec

Any suggestions appriciated

Thanks,
sparky <img src="graemlins/c.gif" border="0" alt="[ouch]" />

Glenn Evans

You may be confusing the warm-up regulator with the rising rate fuel pressure regulator.

The warm-up regulator in your K-Jetronic (don't be fooled, this is a mechanical system) enriches the mixture when the engine is cold and also when the throttle is wide open. The system pressure is controlled by a regulator built into the fuel distibutor. The rising rate fuel pressure regulator is not for K-Jetronic systems.

In the electronically-controlled L- and LH-Jetronic systems fitted to 928s, the injectors for each bank are supplied fuel from a common rail (pipe). The fuel in the rails is controlled by a pressure regulator; the rising rate regulator can be substituted for this to improve the response under load without sacrificing behaviour at idle.

jpitman

Sparky,
What symptoms do you have the the WUR has gone south?
jp

sparkie

thanks,

so it is not possible to replace the WUR with an adjustable fuel pressure regulator like i thought...

sparkie

The car runs and for short periods of time (5secs) and then loss of all power and pressure goes crazy