Announcement

Collapse
No announcement yet.

Cat replacement or Timing chain?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • [All Models] Cat replacement or Timing chain?


  • #2
    Firstly a 2004 is a Corsa C

    The codes may not have been current to the problem as old codes are stored indefinitely unless they are removed using diagnostic kit.

    A mechanic ought to be able to check for a partially blocked cat - the problem is that workshops are loathe to get into diagnosing problems due to the cost of labour. But given the price of parts and fixing it's worth having it properly checked. The snag is that without being able to see the car we can't offer a lot of help on something like this. You really need to be able to inspect it. Again, the timing can be checked to ascertain if it's slipped or not.

    Replacing the cat shouldn't take long. Replacing the timing chain is much more complicated and usually would need 4-5 hours.

    Do not buy cheap timing kits. They will fail very quickly. Only install genuine GM timing components.

    Without being able to inspect the car personally I would advise finding one workshop you are going to stick with, get them to check the timing first, if that is OK then take a look at the cat. Reason for that order is that checking the timing is a clear measurement and either it is OK or it isn't.
    1972 Viva restoration thread - http://www.thecorsa.co.uk/projects-b....html#post1534

    Comment


    • #3
      Originally posted by Taurus View Post
      Firstly a 2004 is a Corsa C

      The codes may not have been current to the problem as old codes are stored indefinitely unless they are removed using diagnostic kit.

      A mechanic ought to be able to check for a partially blocked cat - the problem is that workshops are loathe to get into diagnosing problems due to the cost of labour. But given the price of parts and fixing it's worth having it properly checked. The snag is that without being able to see the car we can't offer a lot of help on something like this. You really need to be able to inspect it. Again, the timing can be checked to ascertain if it's slipped or not.

      Replacing the cat shouldn't take long. Replacing the timing chain is much more complicated and usually would need 4-5 hours.

      Do not buy cheap timing kits. They will fail very quickly. Only install genuine GM timing components.

      Without being able to inspect the car personally I would advise finding one workshop you are going to stick with, get them to check the timing first, if that is OK then take a look at the cat. Reason for that order is that checking the timing is a clear measurement and either it is OK or it isn't.
      Thanks for that. I remember doing the timing on petrol cars years ago with a strobe light connected to the HT leads and it was quite simple as I remember. Could you tell me is it is possible to check for timing on a diesel with little cost. I got the impression from the mechanic that he could not check it without special "keys" and a fair bit of labour and by that time (cost) I might as well replace the chain and tensioners/ guides anyway.

      Comment


      • #4
        Sadly many modern engines need a kit to check the timing. They're not so straightforward as lining up the marks and then checking with a strobe. If the guy you spoke to doesn't know how to check the timing on your engine then I'd ring a diesel specialist. There are plenty of those engines around (it's a FIAT engine) so any diesel specialist ought to be able to check the timing for you without it costing a fortune.

        To be honest with modern diesels when they go wrong you're better of with a diesel specialist anyway, they're too damn complicated for their own good.

        There is some disassembly needed to check the timing, for example the camshaft cover needs to come off - but it's well within an hour's work to check, and if it has slipped they can leave it in bits whilst they order the new timing chain etc. So it's not wasted money having it checked.
        1972 Viva restoration thread - http://www.thecorsa.co.uk/projects-b....html#post1534

        Comment

        Working...
        X