'Bad Puppy' Fuel distibutor

[rob hod]

    Now I know how Kent named his car  I think I may have a Bad Puppy Fuel
Distributor.

    I did an injector change on my 100 avant today. (2.0 RT engine with
Lah-di-dah two peice IM).

    With a jumpered FPR the injector were just fizzing out the smallest
amount of fuel. I thought the new injectors would put paid to that. However
when the new ones were on the lines I had exactly the same problem!

    I put a pressure gauge on the warm up regulator line and found a control
pressure of 1.2 bar (remember this is with just a jumped FPR and no juice to
the bi-metallic strip)

 By playing with the isolator valve on the lines to the gauge I discovered
that if I I restricted flow so that the control pessure went up, the
piddling from the injectors stopped when control pressure got to about 2
Bar.

    I tried a spare warm-up reg. and got the same effect.

    Once I'd got the car back together I montiored control pressure on start
up. It passed the 2 Bar mark in a couple of seconds and went up to a
satisfactory warm reading. Holding pressure was good with old and new
injectors at 3.5 bar.
and 3.3 bar after 20 minutes. System pressure is 5.5 bar.

    So I guess that the fuel distributor is slowly on the way out. I don't
believe there should be any flow without lifting the air plate, however low
the control pressure. OR should Control pressure never be as low as 1.2 Bar
and am I just looking at two bad warm up regs?

 I guess that the car can cope with the piddle because of the fact that the
FPR only runs the FP for a short burst when turning ignition on or when
cranking. However an amount of fuel will be piddled into the IM on switch on
and that aint the right thing. After all I was rather hoping to cure an
intermittant hard warm start and now I think I've seen the problem

    Anyone had a similar experience. Is this what I think it is, a 'Bad
puppy' distributor ?


rob