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by mnorman1964
2022 Nov 30, 14:14
Forum: Speed Shop & Engine Talk
Topic: 4.6 DOHC Noise
Replies: 9
Views: 4516

Re: 4.6 DOHC Noise

I had PVC related whistling at idle issues as well. Strange sound. Pull PVC hose and noise goes away. still have not figured out the exact root cause. Probably gasket somewhere with a tiny leak.