[urq] Warning about Fuel Pressure Accum.

[James Howard]

It's a WR, so disregard any references to external pressure regulators &
duty cycles.These do not apply to the WR.
I have heard of coils going intermittant - but I would expect running
problems too.
What happens if you disconnect the electrical connection to the cold start
injector. Try this for a bit and see if it starts better on average.
The ECU is not very good at handling low voltage during cranking and may not
give a spark. If the battery is good - what about the condition of the
starter motor - maybe it's drawing too much current and/or cranking too
slowly.

BTW almost all the WR's I've seen can take a slightly irritating amount of
cranking on cold starts. The length of time spent cranking seems directly
proportional to the amount of people standing around watching multiplied by
your embarrasment level. I wish I could get mine to start at the flick of
the key every time...

Jim.



> Thanks for all the suggestions;
> I'll have time to look at it a bit more at the weekend but just for the
> record:
>
> The car is a 1987 WR.
> The fuel pump on these does not power up unless the engine is spinning (or
> relay contacts bridged)
> The engine is 1000 miles old.
> Injectors and seals are brand new.
> Plugs new and colour is as it should be.
> Distributor Cap is 1000 miles old
> Plug leads 1000 miles old
> Battery is 1000 miles old
> Air fuel meter readings suggest warm up regulator and cold start injector
> are working fine. Shows rich on start up, declining to stoich as it warms.
> When it does fire, small amount of black smoke suggesting rich mixture.
>
>
> Next tries will be check valve in the pump and the accumulator and when I
> can get my hands on the kit a system pressure check . Will also read the
> archive as suggested when I get 5 minutes.
> When I first ran the car (it had been off the road for 3 years at least)
the
> fuel pump was noisy. Now it is quiet - any significance or should I just
> count my blessings it is not noisy?
> Will a coil decline in performance or do they just work/ not work? Just
> wondered if could be a weak spark as suggested by on lister?
>
> Whatever, thanks for all the suggestions so far.
>
> All the best
>
> Keith
>
> '87 WR