Loud squalling noise from Inline 6

[GMCDAC]

Originally Posted by rusty66

Very late update. I took the intake/exhaust manifold off and cleaned up the surfaces and replaced the gasket with one from NAPA. Put on the carb I got from GMCDAC (thanks again Doug). The engine runs and idles now. Thanks to all for the help.

Gary in Tenn.

That's great to know Gary! I'm glad you are getting the old truck running well again. Get some pics for us sometime!

DAC

[Pops]

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.)

[Pops]

sorry for the previous post. I didn't see page two which covered most of my points. Did you get rusty running?