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Well not 100%, have my back seats up and can hear something buzzing in the back when crancking, and yea the afterrun pump is also running as you say.
think i´m gonna test for power to the pump tomorrow.
But i still cant find out why the coils wont fire
There is a few seconds 'whirring noise' when you 1st turn ignition key ON - this is often thought to be the fuel pump being 'primed' - thats what you get on K-Jetronic dinoasaurs but not Motronic... That noise is actually the afterrun water pump getting tested by the ECU before the engine is started.
If you don't have a voltage tester, then wire up a low wattage 12V bulb (like 5W sidelight) across the terminals of the fuel pump wires to make sure it gets lit up when cranking.
I thought the fuel pump ran as well before startn up.... is this not the case.
It only occurs on K-Jetronic so as to prime some fuel into the accumulator for its continuous injection system - makes for easier starting on that setup.
Standard plugs nipondenso ones.
Have just checked, there is fuel going to the rail so pump is working.
It also gets 5 volts to the sensors when i cranck the engine.
Have also tried some other spark plugs.
Still no spark tho hmm
Last edited by AUDIS2avant; 28 February 2009, 12:24.
I couldent get those so i got the denso´s as they are the same as the bosch ones.
Denso´s are called pk22pr8
And they have worked fine for the last 5k km have even tried other plugs, but no luck
Standard plugs nipondenso ones.
Have just checked, there is fuel going to the rail so pump is working.
It also gets 5 volts to the sensors when i cranck the engine.
Have also tried some other spark plugs.
Still no spark tho hmm
Never mind so much having 5V supply to the camshaft sensor - you need a pulse from it every camshaft revolution. Use a simple LED style 5V tester... The light will stay on then momentarily blink off.
Pretty sure you replaced it already though - check the ring on the back of cam sprocket is not damaged and that the wiring between sensor and ECU is all good. I can give you a pinout if necessary.
Never mind so much having 5V supply to the camshaft sensor - you need a pulse from it every camshaft revolution. Use a simple LED style 5V tester... The light will stay on then momentarily blink off.
Pretty sure you replaced it already though - check the ring on the back of cam sprocket is not damaged and that the wiring between sensor and ECU is all good. I can give you a pinout if necessary.
I checked the ring as it was wery dirty and i cleaned it up.
Would be nice to have a pin out from the sensors tho, as i have an idea that it´s a bad conection.
The hall sensor, should it send 5v out and 0v when it hits the "hole" in the cam wheel?
Cranck sensor i have 3 to test with, and have done just that, and nothing
Back again.
Flywheel pin is present, timing is ok and have done a output test on the wires to the coils and power is coming out, they are just not firing????
Found the test on http://www.s2-audi.co.uk/work_shop.htm
Just cant understand why the coils wont fire....
tonight after almost having the whole engine apart, it fired up, now also with pauls chips inside
I have to say big thanx to everybody for your help, specially paul for the tecnicaly part and urs4boy also.
Now i have a full insight of the engine so if anybody wants help???
Fault was a combination of bad ground on the plenum, dirty connectors and dead cranck sensor and mfts.
It startet 7times in total when cold up to hot, just to check so have to se tomorrow after a full night without tuching it tho, so wish me luck
Am looking forward to driving it now, cause the short trip i took for testing, it was compleetly transformed powerwise
So thanx again guys, this is what the forum is all about
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is this not the case.
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