I have a vacuum gauge on the line between the fuel tank and the Racor with a 
drag pointer to mark the max vacuum and that has not shown any increase when 
this happens, so I am presuming the line is not plugged.  A pressure gauge on 
the other side of the pump makes sense and I might add that when this is 
sorted.  Dave

S/V Aries
1990 C&C 34+
New London, CT



> On Sep 21, 2021, at 10:07 AM, Dave S via CnC-List <cnc-list@cnc-list.com> 
> wrote:
> 
> Good idea on the gauge - I had a project car that required one.  
> 
> This is a good reminder to replace the rubber fuel lines with good quality 
> diesel rated hose and also to verify the hose clamps.  Very easy and cheap 
> preventative maintenance.
> 
> Dave 
> 
> Sent from my iPhone
> 
>> On Sep 21, 2021, at 7:28 AM, Della Barba, Joe via CnC-List 
>> <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>> wrote:
>> 
>> 
>> I had to track down a fuel problem that was driving me nuts. I had random 
>> shutdowns that would randomly fix themselves. I ended up with a fuel 
>> pressure gauge and 2 vacuum gauges, one on each side of the filter. I 
>> noticed the vacuum would increase on BOTH gauges when there was a shutdown, 
>> indicating that the restriction was prior to the filter.
>> What it turned out to be was the fuel fill line was coming apart internally 
>> and dropping a lot of rubber bits into the tank. They would get sucked onto 
>> the fuel pickup tube and then fall off later.
>> Ever since I have had a fuel pressure gauge visible from the helm. I got one 
>> off FleaBay that has a red warning light in it that comes on below 1 PSI. 
>> Note that a vacuum gauge only tells you if there is a clog, low fuel 
>> pressure for other reasons lie air in the system or a failed pump leave it 
>> sit on 0.
>> If memory serves I sent one of my extra vacuum gauges to a member on the 
>> list. I still have one permanently installed.
>>  
>> Joe
>> Coquina
>>  
>> From: Korbey Hunt via CnC-List <cnc-list@cnc-list.com 
>> <mailto:cnc-list@cnc-list.com>> 
>> Sent: Monday, September 20, 2021 5:17 PM
>> To: Stus-List <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>>
>> Cc: Korbey Hunt <kampf2...@hotmail.com <mailto:kampf2...@hotmail.com>>
>> Subject: [EXTERNAL] Stus-List Re: Fuel pump problem?
>>  
>> A crew member advised he had an intermitent mystery fuel problem that turned 
>> out to be a blockage in the fuel supply line at the tank.
>>  
>> Thanks to all of the subscribers that contributed to the list to help with 
>> the costs involved.  If you want to show your support to the list - use 
>> PayPal to send contribution --   https://www.paypal.me/stumurray 
>> <https://www.paypal.me/stumurray>  Thanks - Stu
> Thanks to all of the subscribers that contributed to the list to help with 
> the costs involved.  If you want to show your support to the list - use 
> PayPal to send contribution --   https://www.paypal.me/stumurray 
> <https://www.paypal.me/stumurray>  Thanks - Stu

Thanks to all of the subscribers that contributed to the list to help with the 
costs involved.  If you want to show your support to the list - use PayPal to 
send contribution --   https://www.paypal.me/stumurray  Thanks - Stu

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