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Saturday December 4th
1999. We had decided a while ago that since the engine came from an
insurance written off vehicle we would run the engine before fitting the
body work. Without the scuttle being fitted, we would have to make temporary
mountings and electrical connections. |
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Last week we had temporarily fitted
the ECU, fitted the engine-wiring loom and made connections to the engine
sensors. Andrew bypassed the heater unit and mounted the expansion tank on
wooden blocks, whilst I fitted the battery leads. With most of the
electrical components like instruments and lights not yet fitted there were
many electrical connections unmade. These needed to be positioned and made
safe as necessary. The fuel pressure regulator also mounts on the scuttle
and we completed the temporary installation by mounting it on the wooden
blocks with the expansion tank and connecting the fuel pipes to fuel pump
and the carburettors. |
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We had decided today would be the
day to start the engine. Andrew made a cardboard dashboard to mount the rev
counter and the oil pressure gauge. At this point we realized we needed to
fit the oil pressure sensor. The Westfield 1800Q manual is less than
enlightening on where to fit it. Normally oil pressure gauges or sensors are
fitted instead of the oil pressure switch. The Mondeo oil pressure switch is
fitted on the forward RHS of the engine, behind the engine mount. There is a
hole in the engine mount for access. Because of it's size the oil pressure
sensor will not fit in place of the oil pressure switch. To the left of the
engine mount, approximately at the centre of the engine block is a blanking
plug. Reference to a photograph taken on one of our visits to the factory
shows this is where Westfield fit the oil pressure gauge sensor. The plug
was a little tough to undo but once the sealant was broken it was easily
removed. The sensor was then fitted and sealed with "Hylomar" |
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With the wiring safe and secure,
time to fit the battery. Connecting the negative lead first we tested the
ground connections of ECU engine and major components. Next cautiously
connect the positive lead by touching the lead to the battery, without the
ignition switch on. There should be no "sparks" as they touch. Switch on the
ignition and touch again, as in our case, there may be a small spark. We
could now safely connect the positive lead properly. We had disconnected the
fuel pump whilst we were testing the electrics. Now we put some fuel in the
tank and reconnected the pump. Switch on the pump Brrr's in to life and the
glass bowl of the fuel pressure regulator fills up. The pump slows down to
steady tick and continues. Tell tale signs that we have fuel leak. There are
signs of bubbling around the outlet union of the fuel pump. |
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Though we try it is impossible to
tighten the union in situ. The fuel tank pipes wiring etc. just get in the
way and the shock mounts are too flexible. There is nothing for it, but to
remove the fuel pump. With the pump off, we were able to tighten both the
inlet and outlet unions, sealing them with "Hylomar". When the pump was
refitted and switched on no more fuel leaks. |
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Now will it start? The engine turns
over on the starter, but refuses to fire. Several attempts later it is
trying to fire up but not enough to sustain running. We push the car back in
the garage. For safety reasons we had made sure that were outside and had
fire extinguishers at the ready. Back in the garage we rechecked the engine
connections. Earlier in the day I had checked the spark plug gaps at 1 mm as
recommended in the Haynes Mondeo manual.
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We now checked the Westfield manual
and found that they recommended 1.3 mm. It probably didn't make any
difference but we reset the plug gaps as part of the troubleshooting
process. To test the ignition spark we connected the HT leads to the plugs
and grounded each plug by using a jubilee clip to clamp a piece of wire to
the body and then "daisy chained" the plugs together, finally connecting the
wire to ground. With the plugs laid out on the cam covers we disconnected
the fuel pump again to reduce the petrol vapour being pumped out of the open
plug holes. Turning the engine over we could see good quality sparks. We put
the plugs back in and tried again. It still would not fire consistently. At
this point a bluish pink flame spat out of one of the carburettor barrels.
This indicated, according to Weber a mixture that was too weak. We had
discussed idle screw settings earlier and decided that the carburettors were
set up the same so we would accept Webcon's basic test settings. Now we
decided to set the idle screw settings to the mechanical values (2.5 turns
from the home position) recommended in the Webcon set up instructions. We
definitely had to richen the mixture. We tried to start the engine again and
it bursts in to life and runs. It runs pretty smoothly, considering it is
not set up. We have proved the engine is basically sound, which was the
object of the exercise.
However
it has posed two problems to be solved on another day. The Tachometer does
not read once the engine has fired and is running. Secondly, the oil
pressure seems high, almost full scale on the meter.
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