|
SC lean above 4k rpm
Hello everybody,
Iīm having issues with a freshly rebuild SC. It runs very nice. Cold start, idle,... everything is good. But as soon as I have WOT the AFR is getting way to lean above 4k. And a little to lean beyond. ( I used an AFR tester during the drive) Adjusting idle CO is no problem. There is no vacuum leak and I already swapped out WUR, fuel distributor, and the auxiliary air device on the right side. Oh, and fuel pressure and quantity is spot on, too.
Any ideas what I might be missing? The engine is stock.
The only thing I havenīt swapped so far is this golden 3" "thing" in the right rear of the engine bay. What does this do and how can I test this.
Many thanks in advance, Malte
|