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Help, wife driving the '99 S4 last week, and I get the call, "it sound funny"...

AA kindly lifted to Mechanic 50 miles away who tells me that coil pack and injectors look fine, he's moving on to do a cylinder leakage test, tells me it looks like the middle cylinder on Drivers side (offside #3)

Does this ring any bells with anyone, all suggestions welcome,

car has done 140k miles, MTM chipped, KO4 turbos, well minded.

Bump, help !

by way of update,

injectors and coil for that cyilinder are fine,

compression is fine, nothing on cylinder leak test.

only faults coming up are EGT , one permanent, one stored.

any help appreciated, not many S4's about these parts.

J

Many thanks to Doug in MRC,

a real gentleman who took my call and suggested a faulty channel out on a power amp, we swopped power amps as recommended and the fault switched the other bank.

Great to get a result and Thanks again to MRC.

J