Pressure? What pressure?

I popped down my hydraulics place again, saw Steve (we're mates now) and got a union and hose to attach my pressure gauge to the metering unit - now we can see what's going on. Sure enough there it is, a problem - only 80 PSI. It needs to be between 100 and 110 psi. ASdjusting the PRV and swapping out the PRV made no difference - the pump (spare) is not delivering enough pressure at tickover.
So with the gauge gaffer taped to the dash and the pipe coming out of the bonnet I took it to the TSSC meeting and for a blast - at no point did the pressure get over 90 psi and at full throttle under load it dropped to just over 70 psi (and the car felt strangled) As the injectors trigger at 60 psi (sp the book says) I suspect that's getting close to their limitation.
So, stuff to try - change the pump for the original, the one that draws more amps than the spare and see what that does. Can't do it now, need some sleep as I'm off to Norwich for a 9am meeting another re-organisation, I wishe we could get it right for more than 12 months!
Nevermind :-)


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