Exhaust Rattle & Loss of Power

[lamborgini8]

This problem seams to be intermittent and hasn't happened since I started my Ph1 up yesterday morning and reved the guts out of it so I could actually move it back.

I noticed last week that when the engine is idling the exhaust seams to make a rattling or knocking sound and at higher revs if the car is stationary it makes an odd growling noise.

Next problem was about half a week after the rattling started... Normally when you get to the biting point on the clutch you can just lift off it slowly and you start moving... well that stopped happening and I had to put my foot down on the accelerator all the way to the floor to keep enough revs to get the car moving...

I had a look under the car at the exhaust and apart from the mounts rusting to hell it all looks fine, I can't find any reason why it would be doing this... My only other thought is that its rusted through behind the back box, but then that wouldn't effect the performance would it?

I have a 2001 Mk2 Ph1 Grande 1.2l manual if that helps, perhaps someone had the same problem?

 

[Andyman]

A blowing exhaust will loose you power. Cover your hand over the tailpipe and see if its blowing from anywhere

 

[chris182cup]

my 182 was down on power turned out the centre section was wrecked it had a annoying loud rattle at 4-6k and got it on a ramp couldnt see anythin physicaly wrong with it but internally was fuuucked, got new zaust works fine and power is up to normal

 

[lamborgini8]

Right, well I managed to get around to having a check as said above and I think it is blowing... it's also doing what people have mentioned in a few other topics and sort of coughs at idle... you hear it running smoothly and then a sudden light puff and back to normal again.

 

[-J-]

Could be the CAT having broken up inside, that would cause lack of power if it was obstructed.... Will sound a bit like a broken Glass rattling around.

 

[lamborgini8]

Could be the CAT having broken up inside, that would cause lack of power if it was obstructed.... Will sound a bit like a broken Glass rattling around.

I would describe the sound like putting pennies in a coke bottle and shaking it. The sound isn't constant like I said, it's only if I rev slightly from idle and at random times at higher rpm...

I just had a drive and actually thought the exhaust was hitting speed bumps at one point.