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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Mr84c10 on September 12, 2011, 06:49:10 pm

Title: Engine cranks but making a loud rattle sound from carb
Post by: Mr84c10 on September 12, 2011, 06:49:10 pm

Oh so am bk again... so I adjust my valves the right way change spark plugs and finally got my truck to crank after I notice fuel pump wire was loose... fix that finally cranked and now am getting a loud rattling noise like theres something in carb.... I don't hear any other weird noise coming from engine just that one noise from top that sounds like its from carb engine will run for a MIN or so than shut off... am running 350 .60 over wit a 750 edelbrock carb fuel pump is unknown.... but fuel pump is working now just the loud noise and not running 4 long

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Title: Re: Engine cranks but making a loud rattle sound from carb
Post by: Irish_Alley on September 13, 2011, 01:44:04 am

the only thing i can think of rattling noise is the floats. is it only doing this while running?

Title: Re: Re: Engine cranks but making a loud rattle sound from carb
Post by: Mr84c10 on September 13, 2011, 07:44:49 pm

Ya but I can't even drive it runs MIN or so then shuts off

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Title: Re: Re: Engine cranks but making a loud rattle sound from carb
Post by: Mr84c10 on September 14, 2011, 10:33:13 am

dang nobody else knows

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Title: Re: Engine cranks but making a loud rattle sound from carb
Post by: Irish_Alley on September 14, 2011, 01:21:25 pm

If you babe a problem with the float it might flood the engine causing it to stall

Title: Re: Engine cranks but making a loud rattle sound from carb
Post by: wildcatjason on September 14, 2011, 06:29:33 pm

Is something loose causing a vacuum leak has well? I don't know what would rattle on a carburetor except something attached to the carburetor.

Title: Re: Engine cranks but making a loud rattle sound from carb
Post by: Mr84c10 on October 04, 2011, 07:39:23 pm

Am going put a new carb on it and hope for best

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Title: Re: Engine cranks but making a loud rattle sound from carb
Post by: slammed79 on October 04, 2011, 07:48:07 pm

Why not rebuild the one that is there? A carb rebuild kit is much cheaper than a new carb. And it can be done with hand tools and a can of compressed air.