Aside from replacing the Racor filter regularly, I think it’s a good idea to 
drain the bowl when you change the filter.
I usually change this filter yearly when I change the fuel filters on my Beta 
28.But it is possible for gunk to build up in the bowl which is mostly 
transparent but can cause fuel issues.
I discovered this during a ‘fuel adventure’ a few years ago when I was 
investigating repeated engine stalls during a long motoring from Ocracoke back 
to Oriental.
I tried to drain the bowl (with the top off and filter out) and nothing came 
out the drain. Only after I plunged a screwdriver up thru the clogged drain did 
I get it to drain. The clog was apparently just congealed fuel/dirt but you 
could not see it thru the clear bowl since it was mostly transparent and was 
not obvious compared to the diesel fuel color.
FWIW, I now at least check that fuel will flow out the drain during a filter 
change.
Charlie Nelson1995 C&C 36XL/kcb Water Phantom


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On Friday, April 26, 2024, 2:39 PM, Dennis C. via CnC-List 
<cnc-list@cnc-list.com> wrote:

When the engine is not running, vacuum still sometimes shows.  When I remove 
the gauge, it should drop to zero.  It's on my list to verify that.
I plan to spend a bit of time investigating this.--
Dennis C.Touche' 35-1 #83Mandeville, LA
On Fri, Apr 26, 2024 at 12:03 PM Doug Mountjoy via CnC-List 
<cnc-list@cnc-list.com> wrote:

Dennis, I didn't know there was a check valve in the filter. Since I have 2 
Racor filters I put a tee and gauge in the fuel line after the filters. I have 
not noticed the gauge acting strange. But then I don't look at it often. You 
might try relocating the gauge. I would think that once the engine is not 
longer sucking fuel the gauge should go back to zero. 


Douglas Mountjoy
1988 C&C LF 39
Mexico at large
1984 Sabre 34
Port Orchard, WA
    



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