Saturday, April 03, 2010 - 03:55 pm, by: Scott Wilkes(Scottywilkes)
could be a stuck injector, it only takes a tiny bit of grit to lodge under the pintle of the injector to hold it open.
Worth pulling them out and getting flowtested, leak tested and ultrasonic cleaned? We do it at work and you would be astounded by some of the injectors we remove and clean, this is on under100,000km old vehicles. Aussie fuel at its finest
Unflood the motor and try the new ECU first, if that solves it it may of been a fault within the board, otherwise i would be looking at injectors.
BTW are you certain it was fuel and not a blown headgasket?
Peter Nitschke Junk Filterer South Australia UZZ30 UZZ31
Monday, April 05, 2010 - 05:48 am, by: Peter Nitschke(Pen)
While the ECU was being soldered, I cranked the engine, more petrol shot of the spark plug holes. After cleaning it up, I did a few more cranks to dry the cylinders out.
We then reinstalled the ECU, refitted the plugs and leads and did a test with all the intake stuff still off.
It ran!
It was a bit of a dog, and the exhaust was still loaded with petrol vapour, but not black smoke! Most likely the exhaust had a fair bit of petrol just sitting in it which fortunately blew out and dried out before everything got hot enough to ignite it.
After a few minutes, the vapour went away, the car was also idling smoother and the ECU was probably adjusting for the IACV having been removed and cleaned.
As the plugs and IACV were all sooty, I squirted some throttle body cleaner into the intake while keeping the revs up, hopefully it helped.
So it looks like dodgy capacitors caused one of the injector drivers to turn on, each driver runs 2 injectors, hence cylinders 4 and 6 (middle two on drivers side) getting flooded with fuel.
Finally I re-assembled the air intake stuff and went for a test drive - all smooth and feeling crisp as it does after an ECU reset and a few quick starts. The new coil packs might make a difference and some have claimed improved fuel efficiency - I will have to check it later on.
So it looks like dodgy capacitors caused one of the injector drivers to turn on, each driver runs 2 injectors, hence cylinders 4 and 6 (middle two on drivers side) getting flooded with fuel.
The lesson here is that it would be a good idea for all owners of early Soarers to get the ECU capacitors replaced if it hasn't already been done. It's not a difficult job for a person with very good soldering skills, and may save some inconvenience if the ECU fails at an awkward time.
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good work mate, good to see it fixed and back on the road 
Lets hope it stays that way.
