Orfice fitting on filter

4301 Views 8 Replies 5 Participants Last post by dlblack, May 18, 2007

Bill1013

Discussion Starter · May 16, 2007

What is inside the fuel return line orfice to the filter top mnext to the schrader valve. Did a clear line check for air and had lots of air back to the filter. Couldn't blow or suck thru the orfice, so ran a needle thru it and retried air check, now the air goes back into the filter and clears to solid fuel. There seems to be some kind of check (rubber ?)inside the fitting. Motor seems to run alot quieter now. /ubbthreads/images/graemlins/shrug.gif

OLDBULL /ubbthreads/images/graemlins/smokin.gif /ubbthreads/images/graemlins/smokin.gif /ubbthreads/images/graemlins/warmsmile.gif

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Bill1013

Discussion Starter · #5 · May 17, 2007

Pete: Look at dlblack pics pg.2 filter. Mine is similar IH 1809433C1 but the temp sw. is next to the barbed orfice fitting. Hooked a clear surgical tubing from fuel supply at #1 cyl. back to filter, didn't get flow either way until I stuck a needle thru the orfice, must have been plugged up, but now I get flow back to the filter which is prolly wrong. Got to order a new fitting like he did. Must be a rubber reed valve like he said. Tried to get it apart but could'nt. /ubbthreads/images/graemlins/shrug.gif

OLDBULL /ubbthreads/images/graemlins/smokin.gif /ubbthreads/images/graemlins/smokin.gif /ubbthreads/images/graemlins/warmsmile.gif

I see you posted while I was typing this one. /ubbthreads/images/graemlins/biggrin.gif

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