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Old February 21st, 2017, 05:01 AM
Pops Pops is offline
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Join Date: Jul 2014
Location: Clarkston, Michigan
Truck: 1966 GMC
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Default Re: Loud squalling noise from Inline 6

you've probably done this, but it's worth looking for vacuum leaks. all rubber lines esp one going to pvc at back of valve cover. if leaking big enough that can squal. if you have power steering, there is a check valve at booster that can malfunction. also did you use all gaskets and seal down the rebuilt carb? sure you did. I believe there is clearance on carb at linkage. too much wear at that point may produce noise. Lastly, for now, does your heat riser still work? Is there a leak in that area? Get your rubber hose out (home made stethoscope) and check. Hope you can keep it running after you get you filters changed (stone filter in carb esp.)
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