Join Date: Jul 2005
Location: Rothwell, QLD, AUS
mysterious high pitched whine
Hello everyone, I’m wondering if anyone has any ideas on how to solve this problem:
I just finished swapping a short-block: put my heads on, set preload, extractors back on, and reinstalled the manifold with carby. The carby stayed on the manifold and was untouched during the swap. It ran perfectly well with the same parts before but now I have a high pitched whine and it wont idle.
Manifold vacuum increases with rpm and never dips down on application of the accelerator whilst in park. I’m not sure if that’s normal or a clue to my problem.
Otherwise it runs very smoothly as long as I don’t try to idle it.
Swapped to a different carb – no change.
Any help much appreciated!