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Old 09-15-2020, 09:06 AM   #5
Android04
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Join Date: Aug 2017
Location: Louisville, KY
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Re: Knock after a simple carb swap - Thoughts?

Quote:
Originally Posted by Dead Parrot View Post
Pull all the accessory belts off and check if the noise is still there. A bad PS pump can sound like self destructing engine guts.

Pulled the belts off, and still the same noise. Thanks for the suggestion

Might check the 'new' carb for missing screws, nuts and parts. Maybe something was loose and is now rattling around in a cylinder. Since the noise seems to come from #8, pull the plugs for both 6 & 8 and check for damage or other weirdness.
I checked the old carb and nothing was missing, going to pull the new one off today and check it if I can get some time. Also going to pull the plugs and just double check all is well. I will post back with my findings. If nothing after this I'm guessing a compression check.

Quote:
Originally Posted by Corts60 View Post
Go grab the carb you took off and look underneath it for the bolts that hold the base plate to the main body. Good chance one fell out and went down the intake into a cylinder when you pulled it...ask me how I know.
Quote:
Originally Posted by kidatheart View Post
Sometimes the fuel pump can make a solid knocking sound all of the sudden. Try the old broom handle-to-the-ear trick.
I forgot about that old trick, I will do that today as well.

I'll post back with what I find if anything at all. Thank's everyone.
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