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How to check little filter at fuel inlet?

R

rmm

Regular Contributor
Seen a couple recommendations about checking the filter at the fuel inlet on carb. Is this behind the metal fuel line at carb base? Also if unscrew it how much residual fuel will come out? Anything else to be carefull of?

Thanks

Ryan
 
do it cold and slide a rag underneath. You'll get some fuel dripping out. Do yourself a favor and use a flare, not regular wrench. You'll strip it for sure if not especially if it's been off a few times already.


Bob
 
ditto on using the flare nut wrench (5/8").

Also beneficial is using a 1" backup wrench to hold the inlet fitting stationary. You may have to remove the hose barb for the sight tube....think that was ~ 5/16" across the hex.
 
Rmm,

Yes, as Mark says you should use a large wrench to hold the filter housing nut in place while removing the fuel line with that flare wrench. Then when you remove the filter housing large nut be careful to note the order of the contents for reassembly. The boat owner next to me at the marina installed the filter reversed and it caused him all sorts of problems. When troubleshooting the ensuing problem, he removed the carb and, to check the fuel flow from the pump, he cranked the engine which started (enough gas and fumes in the intake manifold) and sucked the rag he had covering the carb holes into the manifold and almost into the intake valve of one cylinder. He didn't know that the rag had gone into the manifold but discovered that the filter was reversed, so reassembled everything and the engine started OK but there was a rattling noise coming from inside the manifold. He thought that maybe a socket or some metal object had fallen into the manifold, so he removed the manifold only to find the rag partially under the intake valve. He is now in the process of putting it all back together again.

Good luck!

Erich
 
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