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Omega General Help / Re: 2.5 V6 power issues ...
« on: 26 April 2013, 18:26:33 »
Right everybody, sorry I've been mysteriously absent, but I've been away on business.
I've managed to find the problem and luckily it's perfectly logical and inexpensive.
I ended up driving the thing to work a couple of times earlier in the week through absolute necessity, and although it was as rough as it was before, it got a little bit better the more I drove it. I've now been driving it all week and it's pretty much fine.
Through my astonishing powers of deduction, I'm pretty sure that when the cats collapsed they choked the cylinders, valves, and plugs with exhaust gases which condensed and covered them in carbon. I think that was the problem that caused the loss of power (which I guess would have translated to random misfiring), and simply giving the car a good run has burned off any deposits that were causing the problem in the first place.
Obviously there is possibly still the underlying problem that caused them to disintegrate in the first place, but that should be a fairly easy thing to track down, and whilst it will do nothing for the fuel economy, at least the car is drivable. I'm really glad that I seem to have got to the bottom of the problem, and even more happy that it was nothing expensive. This weekend will see a change of plugs and full oil change for the engine and the gearbox.
Thanks for all of the good advice and even the bickering, because I've learned a lot about the car through it all. Hopefully given a little time I'll be able to contribute too.
Cheers.
Marc
I've managed to find the problem and luckily it's perfectly logical and inexpensive.
I ended up driving the thing to work a couple of times earlier in the week through absolute necessity, and although it was as rough as it was before, it got a little bit better the more I drove it. I've now been driving it all week and it's pretty much fine.
Through my astonishing powers of deduction, I'm pretty sure that when the cats collapsed they choked the cylinders, valves, and plugs with exhaust gases which condensed and covered them in carbon. I think that was the problem that caused the loss of power (which I guess would have translated to random misfiring), and simply giving the car a good run has burned off any deposits that were causing the problem in the first place.
Obviously there is possibly still the underlying problem that caused them to disintegrate in the first place, but that should be a fairly easy thing to track down, and whilst it will do nothing for the fuel economy, at least the car is drivable. I'm really glad that I seem to have got to the bottom of the problem, and even more happy that it was nothing expensive. This weekend will see a change of plugs and full oil change for the engine and the gearbox.
Thanks for all of the good advice and even the bickering, because I've learned a lot about the car through it all. Hopefully given a little time I'll be able to contribute too.
Cheers.
Marc
