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[jayjay880]

Hi All
As i read in a post the other day Having a bad day Im having a bad week, do need help on this as this is my first omega and to be fair had little to no trouble with her since i have had it. (9months)
The story so far is driving as usual in my smooth as silk car and all of a sudden there was a bang and the engine died on me, pulled over had a quick look under bonet found aux belt shreded, called RAC they had a look as expected they could not help, did try to start her but engine sounded like there was no compression and not a flicker from her thought maybe aux belt had damaged the crank sensor so thought no more about it.
Have now fitted new aux belt and tensioner checked the cam belt also which is fine, all's well till i tried to start the car same symtom, engine makes a noise like no compression engine turns freely but will not start have heard a back fire a couple of times.
Checked plug wells found full of oil cleaned up oil removed and cleaned plugs they look perfect by the way fantastic colour, cleaned HT leads and charged battery still a dead goose so now im stuck on where to check next if pos would love one of you grear omega fanatics to point me in the right directionas im starting to pull me hair out and give the wife a hard time this is the first time i have failed to get an engin started and don't like the feeling to be honest.
I have had the battery off for 12hrs while i charged it so is it worth doing a paper clip test,
Can anybody help me please!!!!!!!!!!!!!! ?
jayjay880

[Jay w]

I am hazarding a guess here, based on what has happened with others on the forum....

I would imagine that when the belt shredded it has fouled your cam belt and either pulled it off a pulley or caused it to jump a few teeth, the result would be valve/piston contact, hence your inability to start it and the engine sounding like it has no compression

I would be inclined to pull the cam belt cover off and see if the pulley marks line up

good luck

[jayjay880]

Thanks Jay W hope you wrong did have the cam belt cover off when i did the aux belt must admit didn't check the timing marks but all seems well in there.

[Marks DTM Calib]

Yep....cambelt will have gobbled some aux belt and jumped some teeth.....bent valves time.

[jayjay880]

ahhhhhhhhhhhhhhhhhhh

[jayjay880]

Have checked cam belt condition as good as new also timing marks all align in the correct positions, no pices of aux belt present does anybody have any ideas

[Jay w]

compression test would be the next step i would have said and take it from there

[JasonH]

I'd definitely give the paperclip test a go. Can't do any harm and there's a good chance the codes are still logged. See what the ECU thinks is wrong.

[Dazzler]

Have you changed the crank sensor yet?? as these do get damaged when the aux belt lets go.... also when you checked the timing marks did you manage to check the bottom pulley timing marks and not just the cam ones?

[TheBoy]

Have you changed the crank sensor yet?? as these do get damaged when the aux belt lets go

On a v6, the aux belt and crank sensor are too far apart to allow this to happen. Possibly it could happen on 4 cylinder engines, but never seen it...

[JasonH]

Unless the crank sensor gave up at the same time I can't imagine how the belt would have got round the other side of the engine and damaged the crank sensor wiring.

A cam sensor or knock sensor could have taken a hit - but the car would probably start and run in limp mode.

If the belt smacked the fuse and relay enclosure it could have affected a relay but pretty unlikely.

If the car back fires or splutters then in my experience it isn't the crank sensor. When that goes the car turns over just fine but without a hint of firing (no fuel or spark).

If it's a sensor problem the fault codes should point to it.