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Roy Kinslow · 03-10-2024, 08:35 AM

I noticed your PVC valve plumbing. I believe its preferred to have it pull vacuum at the carb base. The way it appears you have it , it is possible for it to lean the mixture only on one or two cylinders. At the carb base it will be more evenly distributed. Might show up more at idle. It's a vacuum leak. Of course your results may vary. Good luck 🙂

03-10-2024, 08:35 AM	#47
Roy Kinslow Junior Member Join Date: Dec 2019 Posts: 45 Likes: 55 Liked 127 Times in 27 Posts	Re: JP1738's Stocker and S/G car I noticed your PVC valve plumbing. I believe its preferred to have it pull vacuum at the carb base. The way it appears you have it , it is possible for it to lean the mixture only on one or two cylinders. At the carb base it will be more evenly distributed. Might show up more at idle. It's a vacuum leak. Of course your results may vary. Good luck 🙂