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Author Corsa B Fault Code 72
gh227
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Registered: 27th Aug 08
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12th Dec 11 at 16:22   View User's Profile U2U Member Reply With Quote
Any ideas?

I have put a new C16XE engine in my Corsa and there is no spark although there is power to the coil. The old wiring has not been changed since the old C16XE went bang and melted a piston (instant 3 cylinder conversion!). The ECU is flashing up Fault Code 72, which is EST (ignition system) lines (open-circuit). Everything seems to be connected so have i missed something obvious? I have fuel, just no spark.
XE Col
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Registered: 23rd May 10
Location: Rochdale, AKA:Boissy07
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12th Dec 11 at 17:20   View Garage View User's Profile U2U Member Reply With Quote
Tried changing coil pack?
Ian
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Registered: 28th Aug 99
Location: Liverpool
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12th Dec 11 at 17:23   View Garage View User's Profile U2U Member Reply With Quote
Would that mean it's not earthed? Or the earths you do have are not able to supply the current?
gh227
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Registered: 27th Aug 08
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12th Dec 11 at 17:59   View User's Profile U2U Member Reply With Quote
Have changed the coil pack but made no difference.

Earth is good but will check it again.

Thanks, Graham.
gh227
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Registered: 27th Aug 08
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18th Dec 11 at 16:46   View User's Profile U2U Member Reply With Quote
Have re-checked earths and all good.
Wiring connectors unplugged and replugged, all good.
Any ideas guys, I'm losing patience with it.
gsiwannabe
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Registered: 28th May 08
Location: Sudbury, Suffolk
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18th Dec 11 at 17:39   View User's Profile U2U Member Reply With Quote
add an extra earth see what happens then, my mate c16xe xe wouldnt start it turnt out the earths that go on fuel rain bolts wernt connected when was all connected it fired up first time
benton101
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Registered: 26th Aug 09
Location: Scotland - laurencekirk
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20th Dec 11 at 13:37   View User's Profile U2U Member Reply With Quote
Take a spark plug out with it still connected to the ht lead and hold it on the cylinder head to get an earth and then crank the engine whilst someone watches to see if the plug sparks. If it doesn't then try another coil on it and make an extra earth .

[Edited on 20-12-2011 by benton101]
gh227
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Registered: 27th Aug 08
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23rd Dec 11 at 17:36   View User's Profile U2U Member Reply With Quote
Have tried this and there is no spark. I changed the coil but it made no difference. Have put extra earth on and still nothing.
gsiwannabe
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Registered: 28th May 08
Location: Sudbury, Suffolk
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24th Dec 11 at 00:12   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by gh227
Have tried this and there is no spark. I changed the coil but it made no difference. Have put extra earth on and still nothing.


try crankshaft sensor then or fuel relay
johnhara1
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Registered: 19th Oct 06
Location: Newcastle upon Tyne
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24th Dec 11 at 12:03   View User's Profile U2U Member Reply With Quote
Are you getting power to the coil?
gh227
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Registered: 27th Aug 08
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26th Dec 11 at 10:33   View User's Profile U2U Member Reply With Quote
Will swap the crank sensor today although it does not show a crank fault and there is a good fuel supply.
Yes there is power to the coil.

[Edited on 26-12-2011 by gh227]
johnhara1
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Registered: 19th Oct 06
Location: Newcastle upon Tyne
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26th Dec 11 at 13:12   View User's Profile U2U Member Reply With Quote
faulty crank sensor would normally kill spark and fuel together but it's worth trying a known working one.

You're 100% sure the new engine was a runner?

 
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