Re: Loud squalling noise from Inline 6
 

Sorry about the idle problem. Gotta get that fixed also. Take off the belt(s) and start it up and see if it squeaks. That will tell you if it's the belt or something it drives. You can't tell if a belt squeaks by looking at it or tightness.

Re: Loud squalling noise from Inline 6
 

You start it, it starts, then dies? Is that right? All within a few seconds? (10-20)

If so, maybe your generator is out and it's not able to keep the truck running. I hear they're easy to rebuild, but you could also swap to a GM 2 wire alternator too pretty easily. You might can kill 2 birds with one hammer!

Re: Loud squalling noise from Inline 6
 

Thank you all for the advice. I will let you know how it comes out soon.

Re: Loud squalling noise from Inline 6
 

Hi Rusty66, I will add one more thing, that may or may not apply to your generator. The one on my '55 GMC has lubrication ports on each end. I know this generator is later model than the truck but I don't know how much. Once a year I add a couple drops of 10wt oil to them.

DAC

Re: Loud squalling noise from Inline 6
 

Sounds like a vacuum leak. I've seen carburetor base and body gaskets act like a reed in a musical instrument, resulting in some pretty strange noises. Make sure everything is tight. Also spraying carb cleaner or some other solvent around suspected area's may help you find vacuum leaks too.

Re: Loud squalling noise from Inline 6
 

Hi All,
Changed the fuel filter and have a carb kit from NAPA. Got some help from my wife and started the truck after changing the filter. It still won't idle but the noise is from the base of the carb I think, as Turbobill suggested. i will work on the carb kit tomorrow. Looks like I might have to replace the gas tank and fuel lines at some point too.

Re: Loud squalling noise from Inline 6
 

Good work Rusty and Turbo!!!!!
Rusty, I think that filter tells you something. Make sure you clean everything well. Your fuel system is "Gumby ******"

Re: Loud squalling noise from Inline 6
 

Check to see whether something is stuck in the PCV valve. If it's dumping too much vacuum, it will make the engine run rough and not want to idle and can sometimes make a squealing noise.

Re: Loud squalling noise from Inline 6
 

Also the squalling noise could be from a stopped up exhaust system.

Re: Loud squalling noise from Inline 6
 

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.