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[dave the builder]

sorry , took a while to find 

Please send me a reference.

this one ? is yours the same ? £28.60 inc P&P

Cam belt is due a change (5 years and 80000 miles old), and I thought I would do it at the same time. I have no record of a water pump change, that could be due (175,000 miles) too.

cambelt is 100k or 10 years
waterpump is up to you , i replace them with the cambelt kit (about £85 for gates ),but you don't have too
and didn't last time 

[terry paget]

Thanks Dave. Cam cover ordered.
On reflection, the code is specific to cylinder 1. Having cleaned and replaced all plugs and the coil pack, cylinder 1 misfire still present points strongly to the coil pack.
Cambelt change 100K or 10 years, is it? In that case it can wait.

[Nick W]

Thanks Dave. Cam cover ordered.
On reflection, the code is specific to cylinder 1. Having cleaned and replaced all plugs and the coil pack, cylinder 1 misfire still present points strongly to the coil pack.

coil pack is possible, and being a cheap to buy and fit consumable part should be top of the list. But there's a number of other causes, like wiring faults, injector issues and mechanical problems that you should at least consider.

[dave the builder]

have you tried the coil pack from the spares car ? with a different plug , and cleared the codes ? (after cleaning ALL oil from the wells)
if you still have a missfire after that then as Nick says , it could be something more complex to resolve 

[Marks DTM Calib]

And beware the cheap pattern coil packs, been there, done that!

[terry paget]

I had washed the plugs and coilpack in petrol yesterday. However, on removing the coilpack today, I saw(see above) there was still some oil and water on the coils of 1,2 & 3. I substituted the coilpack from my donor Astra and started engine, no misfire. I plugged in diagnoser and cancelled the fault code, on restart no fault code reappeared. So fault is traced and rectified.
I have on order a new cam cover with gaskets,when it arrives (Wednesday?) I shall fit it and deem the car recommissioned. Is there anything else I should do?
Thanks to all for advice.

[dave the builder]

good news then  well done Terry 
as the car had been running with a miss fire ,I advise you do an oil change 
also worth checking the car over and checking the strength of anti-freeze and strong screen wash .
winter will soon be upon us and i've seen reports of "worst/coldest winter in 50 years" 
not sure how true that is
hope the cam cover bolts come out easy for you 

[STEMO]

good news then  well done Terry 
as the car had been running with a miss fire ,I advise you do an oil change 
also worth checking the car over and checking the strength of anti-freeze and strong screen wash .
winter will soon be upon us and i've seen reports of "worst/coldest winter in 50 years" 
not sure how true that is
hope the cam cover bolts come out easy for you 

You been reading the daily star again? 

[dave the builder]

good news then  well done Terry 
as the car had been running with a miss fire ,I advise you do an oil change 
also worth checking the car over and checking the strength of anti-freeze and strong screen wash .
winter will soon be upon us and i've seen reports of "worst/coldest winter in 50 years" 
not sure how true that is
hope the cam cover bolts come out easy for you 

You been reading the daily star again? 

It was on the internet ,so must be true 

[Marks DTM Calib]

good news then  well done Terry 
as the car had been running with a miss fire ,I advise you do an oil change 
also worth checking the car over and checking the strength of anti-freeze and strong screen wash .
winter will soon be upon us and i've seen reports of "worst/coldest winter in 50 years" 
not sure how true that is
hope the cam cover bolts come out easy for you 

Not actually necessary, the ECU setups since the early noughties disable the injection on a misfiring cylinder

[terry paget]

About to fit the new cam cover. Haynes does not mention any sealant in the sharp corner at the timing sprocket end, unlike I have always done on Omegas. I presume this is correct.

[dave the builder]

About to fit the new cam cover. Haynes does not mention any sealant in the sharp corner at the timing sprocket end, unlike I have always done on Omegas. I presume this is correct.

I didn't use any sealant on the 2 I replaced, neither have leaked

[terry paget]

I have bought the wrong cover. This is a 2010 Astra H 1.6. Here is the cam cover.


The gasket is labelled 55 354237 GM.
I cannot find one on e-bay. Please help.

[dave the builder]

i did say "is yours the same "  when i posted the link 
looks to be the 115 hp engine code Z16XER
not the 103 hp z16xep
so just a gasket
https://www.ebay.co.uk/itm/Vauxhall-ASTRA-CORSA-INSIGNIA-MERIVA-1-6-1-8-CAM-ROCKER-COVER-GASKET-NEW/192975394112?epid=12032720026&hash=item2cee3ad540:g:WeMAAOSwNYVdHg6b

unless you want a branded one ?

did you check if the pcv valve was ok BEFORE removing the cover ? 

[terry paget]

i did say "is yours the same "  when i posted the link 
looks to be the 115 hp engine code Z16XER
not the 103 hp z16xep
so just a gasket
https://www.ebay.co.uk/itm/Vauxhall-ASTRA-CORSA-INSIGNIA-MERIVA-1-6-1-8-CAM-ROCKER-COVER-GASKET-NEW/192975394112?epid=12032720026&hash=item2cee3ad540:g:WeMAAOSwNYVdHg6b

unless you want a branded one ?

did you check if the pcv valve was ok BEFORE removing the cover ? 

No, didn't check the valve, seemed simplest to change the cover complete. I shall check now. The cover seemed all right, it said 2010 car I thought.
All my Astras are different! I have a 2004, a 2006, a 2008 and a 2010. They are all Astra H 1.6 petrol manual, th coil packs are the same on the 2004 and the 2010, but as I learned earlier, the cam belt arrangements are not the same.