Alfa Romeo - 2000, Lusso Twin Spark holed exhaust like noise.

Honest John Back Room » Technical matters
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Fri 9 Nov 2007 18:15
2000, Lusso Twin Spark holed exhaust like noise. - bk.bas
I have a 2000 166 Lusso twinnie, that runs like a dog...well perhaps that's a bit harsh, but I'm starting to get really hacked off with it. It has what I can only describe as a vibration through the rev range, and it sounds like there is a hole in the exhaust (there isn't and I have had a new manifold as this was what the local Alfa independent thought it was -on removal it was slightly cracked around the weld, but wasn't the problem!). Sounds louder/worse under heavy acceleration, or especially when having to work harder, ie hill climb etc.

The vibration has been getting worse, so I had an examiner run, which showed up nothing. The garage guy said it might be the cam belt/tensioners or balance belt/shaft, but I don't see how that would make it sound as if there was a hole in the exhaust.

Another independent that I tried for a second opinion said that it might be a faulty butterfly in the inlet manifold (???), but again to me these seem like stabs in the dark. I've already spent £350 having it NOT diagnosed, so am reluctant to keep chucking money at it.

Anyone got any suggestions as to either what it might be or how I can find out what it is. Could it be plugs, coil packs, the inlet manifold, lamda sensor etc???/. I would have thought that if it was any of these it would have shown up on Examiner...or maybe not, how could I tell without having to replace every bit??? HELP PLEASE....apart from the noise and vibration it runs and accelerates fine and MPG is about right at 26-31 dependent on how hard I drive. I have repaired the large split in the air-box flex coupling and checked over everything else I can. It's a shame because the rest of the car is in exceptional condition, but I'm getting ready to just get rid of it!

SLT and some re-formatting.

Edited by Pugugly {P} on 09/11/2007 at 18:18

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