This is my first post on this site. It looks good and the site has a good feel to it so I have some high hopes! So, I have a 2005 OPEL corsa 3 cyl. and one day it just stopped. I will not bore you with ALL the things I have tried so far - but here is where I am right now : The engine turns over, there is a spark, the camshaft rotates and - get this - when I spray some easy start into the air intake it doesn't even cough ! Am I missing something here - spark + fuel must result in something. I can only conclude that the cam position sensor is giving the wrong timing signal to the ECU. Can anyone else confirm my suspicion? thanks

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    spark+fuel+compression, of course it must be spark at the right time and proper fuel ratio within the combustion range and minimum compression of about 90psi or higher. – Moab Aug 5 '16 at 14:04
  • Do you suspect the immobilizer? Or do you suspect the position sensor? It doesn't sound like the immobilizer although the camshaft position sensor could be a cause. What is the car's recent history before it started? Funny behavior? Repairs or maintenance work? Drive through a big puddle of water? The ignition switch is a possibility too, or a failing ignition coil. Is your check engine light on? – Jason C Aug 5 '16 at 14:35
  • absolutely no suspicion of any problem in the lead up to this event. I was driving along slowly and then symptom of fuel starvation. No recent maintenance - except - a new key cut as a spare - and I did try it out to see if it worked. This is why I suspect the immobiliser - I think I may have somehow confused it. I will test the compression tomorrow. – geoff Aug 6 '16 at 16:43
  • well I just checked the compression and there is none! – geoff Aug 7 '16 at 10:35
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    well, when I told you the camshaft was rotating, this was indeed true - however I was only observing the exhaust camshaft (the only one I could see through the oil filler) - you guessed it - the inlet camshaft (the one with the angle sensor!) is siezed and had sheared the sprocket retaining bolt. Two of the four shaft bearers have suffered damage - I guess through lack of oil but I don't know. The shaft seems to have deposited its material onto the bearers in the head so I am thinking to try to clean off that mess with my dremmel and obtain a new shaft. – geoff Aug 8 '16 at 11:48

seems being a newbie on this site, i have confused the system. Sorry. So now I have most of the answer - the inlet camshaft had siezed and this one has the sensor on it hence why the system dissabled the fuel pump and thus sent me off on a wild goose chase!. On first investigation, looking in the oil filler I saw the exhaust camshaft rotating so thought all is well in there- so again another diversion. Now, my question is - assumong the oil feed is blocked up to the camshaft bearing - how can I clear it?. With an air line perhaps? Any ideas?thanks geoff

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