Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Please check the Forum Guidelines at the top of the Newbie section

Pages: [1] 2 3 4 5 6 7 8 ... 10   Go Down

Author Topic: Corsa, Engine Problems  (Read 3505 times)

0 Members and 1 Guest are viewing this topic.

JamesV6CDX

  • Omega Queen
  • ********
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 15966
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Corsa, Engine Problems
« on: 23 January 2018, 07:34:20 »

Not a help or information request as such (although all opinions welcome) - more of a rambling thread.

Currently parked on my drive is a Vauxhall Corsa, it's a 2007 'D' with the almighty three cylinder 1 litre 12 valve engine. Female owned long term, not ragged or modified, reasonable history of oil changes etc.

I was told "It doesn't start very well, and when it's going, it judders a bit. It also stalls".

Understatement of the year  ;D It will only start at WOT, and then runs on at least only two cylinders, possibly one and a half. It won't idle, and cuts out as soon as it comes to a standstill.

Fault codes stored are: lambda sensor no2 open circuit, lambda 2 heater fault, general misfire, and misfire cylinder 1.

I've not looked at it, other than this (haven't even lifted the bonnet yet) - but will do so today.

My money, in this order, is on

1) Burnt out / damaged valve
2) Ring / piston trouble
3) Coil pack
4) Plug

Doesn't use any oil, and no visible smoke from the rear.

I'll be surprised if no1 is the troublesome cylinder, though, as normally on the three pot lumps, I thought it was usually no3 that suffers.

With aches/pains/rain I won't be doing any more than removing the plugs and doing a visual inspection / compression test today, but place your bets here as to what's wrong  ::)
Logged

JamesV6CDX

  • Omega Queen
  • ********
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 15966
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Re: Corsa, Engine Problems
« Reply #1 on: 23 January 2018, 07:37:44 »

Interestingly, four years (and only 20,000 miles ago) she paid silly money to a garage, to fix a misfire. Having seen the invoice, this includes "cylinder head removal, resurfacing, and replacement of burnt out valve(s)"

So - something causing valves to burn - running lean due to fuelling issue perhaps

Or, maybe the garage couldn't be arsed to grind the valves in properly, causing  this further premature failure through lack of heat dissipation

Or worn guides.

Who knows  ;D
Logged

Fuse 19

  • Administrator
  • *********
  • Offline Offline
  • Gender: Male
  • West Bridgford
  • Posts: 32117
  • Git!
    • View Profile
Re: Corsa, Engine Problems
« Reply #2 on: 23 January 2018, 08:03:08 »

Well if its not using oil then it wont be a piston or ring issue

Compression test as first job (pop the throttle body off to get it to WOT or put something on the accelerator)
Logged

JamesV6CDX

  • Omega Queen
  • ********
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 15966
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Re: Corsa, Engine Problems
« Reply #3 on: 23 January 2018, 08:04:59 »

Well if its not using oil then it wont be a piston or ring issue

Compression test as first job (pop the throttle body off to get it to WOT or put something on the accelerator)

Will do so, and post results - first job today.

There looks to be loads of room to work, and the engine small and light, so I quite fancy taking it on as a little challenge, especially if it's likely to be limited to top end trouble :y
Logged

henryd

  • Omega Lord
  • *******
  • Offline Offline
  • Gender: Male
  • west cornwall
  • Posts: 7728
  • VW Touareg R5 tdi Auto
    • View Profile
Re: Corsa, Engine Problems
« Reply #4 on: 23 January 2018, 08:30:07 »

Well if its not using oil then it wont be a piston or ring issue

Compression test as first job (pop the throttle body off to get it to WOT or put something on the accelerator)

Will do so, and post results - first job today.

There looks to be loads of room to work, and the engine small and light, so I quite fancy taking it on as a little challenge, especially if it's likely to be limited to top end trouble :y

If it's the same one litre lump that the Corsa C had then head removal is quite a laborious task for something so small although as said access is good
Logged
other rides 
  Focus 1.6 mk2,Audi A3 tdi,306 cabriolet,MG ZTT cdti
  Sterling elite trekker pikey wagon

Nick W

  • Omega Lord
  • *******
  • Offline Offline
  • Gender: Male
  • Chatham, Kent
  • Posts: 6139
  • Rover Metro 1.8VVC
    • 3.0l Elite estate
    • View Profile
Re: Corsa, Engine Problems
« Reply #5 on: 23 January 2018, 08:37:55 »

They're prone to intake manifold problems, which could easily be the fault. That can then cause the  HG problems that they are also known for.
Logged

JamesV6CDX

  • Omega Queen
  • ********
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 15966
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Re: Corsa, Engine Problems
« Reply #6 on: 23 January 2018, 09:06:38 »

All plugs are covered in thick white deposits, although none are oil fouled

Compression test -

Cylinder 1 - no compression (gauge JUST moved)

Cylinder 2 - 225psi - spot on

Cylinder 3 - 95psi

So my guess of running on 1.5 cylinders was about right!

I dropped a bit of oil into number 3 to see if it would rise, but annoyingly I tripped a bit and put more than a little drop in there. The compression went up to normal at this point, however, I think this was due to the excess oil, rather than anything else, so don't think the test was at all accurate.

Any thoughts?

Obviously, the head's going to have to come off either way..... Not a job I've ever done on a chain-driven corsa
Logged

henryd

  • Omega Lord
  • *******
  • Offline Offline
  • Gender: Male
  • west cornwall
  • Posts: 7728
  • VW Touareg R5 tdi Auto
    • View Profile
Re: Corsa, Engine Problems
« Reply #7 on: 23 January 2018, 09:46:06 »

All plugs are covered in thick white deposits, although none are oil fouled

Compression test -

Cylinder 1 - no compression (gauge JUST moved)

Cylinder 2 - 225psi - spot on

Cylinder 3 - 95psi

So my guess of running on 1.5 cylinders was about right!

I dropped a bit of oil into number 3 to see if it would rise, but annoyingly I tripped a bit and put more than a little drop in there. The compression went up to normal at this point, however, I think this was due to the excess oil, rather than anything else, so don't think the test was at all accurate.

Any thoughts?

Obviously, the head's going to have to come off either way..... Not a job I've ever done on a chain-driven corsa

There is a timing kit that you'll need to reset cams after head replacement :y

https://www.ebay.co.uk/itm/Vauxhall-Timing-Setting-Locking-TooL-Corsa-AGILA-3-Cylinder-1-0L-12V-1-2L-16V-/262513369296?clk_rvr_id=1422697562768&utm_medium=cpc&utm_source=twenga&utm_campaign=twenga&utm_param=eyJlcyI6MCwicyI6OTcyMDIzNywiY2kiOiIwM2RkZTZmY2Q5MWUzOTM1MGU3ZThkNGVjZWMwOWFkMyIsImkiOiIyNjI1MTMzNjkyOTYiLCJ0cyI6MTUxNjcwMDgxMywidiI6Mywic28iOjE1MDAsImMiOjM1NjI1fQ%3D%3D&rmvSB=true
« Last Edit: 23 January 2018, 09:47:48 by henryd »
Logged
other rides 
  Focus 1.6 mk2,Audi A3 tdi,306 cabriolet,MG ZTT cdti
  Sterling elite trekker pikey wagon

Fuse 19

  • Administrator
  • *********
  • Offline Offline
  • Gender: Male
  • West Bridgford
  • Posts: 32117
  • Git!
    • View Profile
Re: Corsa, Engine Problems
« Reply #8 on: 23 January 2018, 10:18:21 »

First things first, check one of the cam shafts are not snapped (as I don't go for the two failures at once principle)
Logged

henryd

  • Omega Lord
  • *******
  • Offline Offline
  • Gender: Male
  • west cornwall
  • Posts: 7728
  • VW Touareg R5 tdi Auto
    • View Profile
Re: Corsa, Engine Problems
« Reply #9 on: 23 January 2018, 10:23:14 »

First things first, check one of the cam shafts are not snapped (as I don't go for the two failures at once principle)

Seen the front cam snap a few times on the 1.2 but not the 1.0................yet ::)
Logged
other rides 
  Focus 1.6 mk2,Audi A3 tdi,306 cabriolet,MG ZTT cdti
  Sterling elite trekker pikey wagon

Fuse 19

  • Administrator
  • *********
  • Offline Offline
  • Gender: Male
  • West Bridgford
  • Posts: 32117
  • Git!
    • View Profile
Re: Corsa, Engine Problems
« Reply #10 on: 23 January 2018, 11:14:35 »

I have seen the exhaust one go on a 1.0  :y
Logged

JamesV6CDX

  • Omega Queen
  • ********
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 15966
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Re: Corsa, Engine Problems
« Reply #11 on: 23 January 2018, 13:34:44 »

I'll post pictures and full update later, but for now I'm off for a hot bath, as I hurt like a hurty thing after doing that.

Anyhow, three hours work (which I've discovered is my absolute limit  >:( :'() , the head is off. Camshafts are intact.

On cylinder number 1, the exhaust valves are both black. One valve is visibly holed, which is an obvious cause of the no-compression.

Cylinder 2, the exhaust valves are covered in white deposits, and are intact.

Cylinder 3, as per cylinder 2.

The inlet valves on all pots are black which looks normal.

The fire rings on the head gasket all looked intact, and as per previous update, no overheating / pressuring was present.

I filled the inlet and exhaust ports on the head with petrol, on cylinders 2 and 3, and there is no seepage past the valves whatsoever so far

The top of number 1 piston is pretty clean. Number 2 and 3 have more deposits as expected.

So why the 90psi, on cylinder 3?  :-\
Logged

JamesV6CDX

  • Omega Queen
  • ********
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 15966
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Re: Corsa, Engine Problems
« Reply #12 on: 23 January 2018, 13:52:17 »

I should add, I removed the injector connectors prior to compression test, so I can't see there being any bore wash issues etc
Logged

STEMO

  • Omega Lord
  • *******
  • Offline Offline
  • Gender: Male
  • Up North
  • Posts: 9009
    • Astra 2.0 diesel
    • View Profile
Re: Corsa, Engine Problems
« Reply #13 on: 23 January 2018, 15:09:13 »

I'll post pictures and full update later, but for now I'm off for a hot bath, as I hurt like a hurty thing after doing that.

Anyhow, three hours work (which I've discovered is my absolute limit  >:( :'() , the head is off. Camshafts are intact.
Posting in For Sale sections

Absolutely no links to your Ebay auctions, or Ebay auction numbers, or direct or indirect links to other places where it is advertised.

No posting for sale items in the 'wrong' areas to get around the postcount limits.
On cylinder number 1, the exhaust valves are both black. One valve is visibly holed, which is an obvious cause of the no-compression.

Cylinder 2, the exhaust valves are covered in white deposits, and are intact.

Cylinder 3, as per cylinder 2.

The inlet valves on all pots are black which looks normal.

The fire rings on the head gasket all looked intact, and as per previous update, no overheating / pressuring was present.

I filled the inlet and exhaust ports on the head with petrol, on cylinders 2 and 3, and there is no seepage past the valves whatsoever so far

The top of number 1 piston is pretty clean. Number 2 and 3 have more deposits as expected.

So why the 90psi, on cylinder 3?  :-\
You do leave yourself wide open  ;D


OOPS, there’s another one  ;D
Logged
If you are offended by anything I post, sorry. Just thought I'd get that in now.

JamesV6CDX

  • Omega Queen
  • ********
  • Offline Offline
  • Gloucestershire/Buckinghamshire
  • Posts: 15966
    • Omega 3.2 Retail MV6 LPG
    • View Profile
Re: Corsa, Engine Problems
« Reply #14 on: 23 January 2018, 15:10:27 »

I'll post pictures and full update later, but for now I'm off for a hot bath, as I hurt like a hurty thing after doing that.

Anyhow, three hours work (which I've discovered is my absolute limit  >:( :'() , the head is off. Camshafts are intact.
Posting in For Sale sections

Absolutely no links to your Ebay auctions, or Ebay auction numbers, or direct or indirect links to other places where it is advertised.

No posting for sale items in the 'wrong' areas to get around the postcount limits.
On cylinder number 1, the exhaust valves are both black. One valve is visibly holed, which is an obvious cause of the no-compression.

Cylinder 2, the exhaust valves are covered in white deposits, and are intact.

Cylinder 3, as per cylinder 2.

The inlet valves on all pots are black which looks normal.

The fire rings on the head gasket all looked intact, and as per previous update, no overheating / pressuring was present.

I filled the inlet and exhaust ports on the head with petrol, on cylinders 2 and 3, and there is no seepage past the valves whatsoever so far

The top of number 1 piston is pretty clean. Number 2 and 3 have more deposits as expected.

So why the 90psi, on cylinder 3?  :-\
You do leave yourself wide open  ;D


OOPS, there’s another one  ;D

Maybe it's lack of sleep, but you've totally lost me!  ::)
Logged
Pages: [1] 2 3 4 5 6 7 8 ... 10   Go Up
 

Page created in 0.157 seconds with 21 queries.