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Re: Escort Sigma 1600 Race Car
Check the spark quality, we once had an issue with some dodgy wiring, the engine sounded quite good and revved up fine in neutral but started to misfire badly as soon as the engine was under any load, changed the coil suspecting this, engine sounded perfect immediately, then re connected rev counter and the exact same problem was back again, must have been a stray wire somewhere, would accelerate perfectly under load when we figured this out
There was enough power coming from the coil to fire the plugs under light throttle openings, which equals low cylinder pressures and higher advance at low rpm
Higher advance takes way less power to spark than closer to TDC firing when the engine is under load with much higher cylinder pressures, a turbo engine would be most difficult to fire needing more energy to jump the spark plug gap
Worth a try disconnecting one of your coils, connect it to a spare spark plug, give this an earth to engine or car body and start the engine running on 3, you should see a nice bright spark, if it looks very faint then you know there is a problem, may be unlikely when running full management but you never know
Check the spark quality, we once had an issue with some dodgy wiring, the engine sounded quite good and revved up fine in neutral but started to misfire badly as soon as the engine was under any load, changed the coil suspecting this, engine sounded perfect immediately, then re connected rev counter and the exact same problem was back again, must have been a stray wire somewhere, would accelerate perfectly under load when we figured this out
There was enough power coming from the coil to fire the plugs under light throttle openings, which equals low cylinder pressures and higher advance at low rpm
Higher advance takes way less power to spark than closer to TDC firing when the engine is under load with much higher cylinder pressures, a turbo engine would be most difficult to fire needing more energy to jump the spark plug gap
Worth a try disconnecting one of your coils, connect it to a spare spark plug, give this an earth to engine or car body and start the engine running on 3, you should see a nice bright spark, if it looks very faint then you know there is a problem, may be unlikely when running full management but you never know
and well done on getting to the bottom of the ecu fault.that would of had me stumped.as for the oil lines i know goodridge do some sort of heat resistant covering.its bright orange and ive seen it on a lot of turbo,d race cars over here.im just not sure where u would find it
.hope you have more luck than me finding it
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