EJ25 running rough

[Russell]

Thanks graham.......yea, know all about ph pitfalls internationally.......Last time there.....moons ago, we pigged out on crayfish / oysters / wild venison, from way down south.............simply brilliant.Ozy $$$ makes for a good exchange rate at the moment too........oz $ = nz 1.25

[mad max]

Did not get time to contact the UFO guy in NZ Darrell due to family commitments. On returning to my tropical paradise peninsular I dragged out my EJ25 kruser cabin flying ship and concluded that the only electronic component I haven"t replaced was the crank angle sensor.

[Lefty]

G"day MaxSeems like every test Chook has suggested

[mad max]

A very intelligent and scientific appraisal Lefty. I would remove the LH cylinder head at the drop of a hat. Maybe I should just pretend I never saw the oscilloscope readings :-

[chook]

Lefty/Max it is a good question.The fact still remains that the oscilloscope trace definitely shows a disparity between the injector feeds. Max has swapped the injectors over and the fault still persists. Another test would be to again swap

[Disco]

And remember the ecu gets no feedback from the engine so even if a spark plug was missing there is no explanation for the double pulse.

[birdy]

EJ25 running roughStill???

[mad max]

Yep Birdy, the ship is still grounded. Lucky I"ve got a spare one with a simple engine. The last time it played up it was a simple matter of blowing part of a small fly out of the main carb. jet.

[Russell]

Disco and others...........the ECU has been changed out with another.......mine.......my ecu runs my machine just dandy, it ain"t ecu problem.( spend 4....5 grand on a motec or other.....which are damn good, will be wasted money ) in this case.Max ol,son..........weeeez back home, TOP trip..........froze me tits off in them snow mountains........but loved it.( mate.......you have to sort that "flysoob" site......them guys will sort your problem for sure )

[Disco]

$1400 for a wolf v4x with the adapter to just plug it in where brian"s computer comes out.Pretty good value.

[mad max]

Good advise guys, It would be a shame to pull the engine apart if there is nothing wrong with it :" (I thought you were going for 7 weeks Russ) I was at Huapai for 7 days, spread my mothers ashes ect. wet and cold most days (thats why I migrated)

[Gleeso]

Hi Max, I have been following the thread, sticky problem you have. Russ makes a good point of getting onto the "flysoob" site, lots of potential info that might provide you with the breakthrough needed.Matt

[Russell]

Disco ..........way back when we was fireing up me build.......we had probs on and on......was about to purchase a motec, as all attempts to get me soob going were exhausted.........$4600 installed was the going price ex brisbane. Exactly same pewtar that sam La was useing. Anyway me prob got sorted, wasn"t me orig ECU.However your "install" interests me, please give full details.......thanks mate( max.......had to cut short as lucy"s sister died )

[Disco]

Disco ..........way back when we was fireing up me build.......we had probs on and on......was about to purchase a motec, as all attempts to get me soob going were exhausted.........$4600 installed was the going price ex brisbane. Exactly same pewtar that sam La was useing. Anyway me prob got sorted, wasn"t me orig ECU.However your "install" interests me, please give full details.......thanks mate( max.......had to cut short as lucy"s sister died )Yeah it wasn"t my original ecu causing my problems either (well it wasn"t faulty anyway(I have 2 and although swapping did temp fix the problems, they still came and went))

[chook]

Max before you expend the $ for a new ECU, can you connect the "A" channel of your CRO to the ECU end and the "B" channel to the "faulty" injector end of the connecting cable please. I would be interested to see those waveforms. I know it will be difficult because the connections are sealed, but it will remove the doubt I have about the wiring harness to that injector. You may need a helping hand to do it.Chooky