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Author Topic: Does this sound like blocked cats??  (Read 925 times)

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PaulW

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Does this sound like blocked cats??
« on: 05 January 2009, 15:35:26 »
The MV6 I got the other day, I've just spent today fixing it so I can drive it, and now another issue...

I replaced the rubber union on the secondary air injection on the drivers side (which connects the metal pipe attached to the manifold to the front pipe which goes to the canister & valve to the SAI pump in the wing).

Driving the car, its extremely hesitant, and the pipe I replaced started blowing after a while again.  There is no power at all, and also a whistle when revving at a standstil.

So reckon it could be blocked cats?  If so, given its ex-plod, can I not just use normal ones from another 3ltr estate or whatever??

It's only blowing the union on the drivers side, passenger side seems fine from what I can see...

No EML codes.
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Marks DTM Calib

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Re: Does this sound like blocked cats??
« Reply #1 on: 05 January 2009, 15:45:54 »
Blocked on the drivers side then probably....could also be the centre section.

Standard cats will fit from a 2.5 or 3.0
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PaulW

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Re: Does this sound like blocked cats??
« Reply #2 on: 05 January 2009, 15:48:30 »
Just in case then, reckon its worth doing the centre section too?

I don't want to spend much money on this as I'm only using it for a few weeks before I split it...

Other option I guess is just gut the internals of the cats...  Given that its an ex-plod, they've probably just melted inside from its previous abuse ::)
« Last Edit: 05 January 2009, 15:49:33 by PaulW »
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Elite Pete

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Re: Does this sound like blocked cats??
« Reply #3 on: 05 January 2009, 15:52:02 »
You've already got some on the 2.5 and if you don't want to use them I've got some ;)
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Entwood

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Re: Does this sound like blocked cats??
« Reply #4 on: 05 January 2009, 19:15:59 »
Might not be the cats .. but a blocked back box ??  On the old beast mine went all horrible, eventually found to be a blocked back box as all this horse hair type stuff started to come out .... new box and the car was suddenly like new .. :)
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Shagma

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Re: Does this sound like blocked cats??
« Reply #5 on: 05 January 2009, 19:58:35 »
how can you possibly know if any of the components are blocked in the exhaust system...?
I mean, is there any sophisticated way of detecting a blocked exhaust..?
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Marks DTM Calib

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Re: Does this sound like blocked cats??
« Reply #6 on: 05 January 2009, 20:21:09 »
Take the suspect part off and blow through it
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