New Racor Vaccum Gauges with tattle tale
- Thread starter Robski97
- Start date
Tomco
Active Member
- Aug 16, 2012
- 455
- Boat Info
- 2004 420 Sedan Bridge
GHS Hydraulic Lift
11' Walker Bay, 30hp
- Engines
- Cummins 6CTA 8.3M
Timely post - plan to do the same. Thanks for sharing the part number.
- Mar 8, 2016
- 92
- Boat Info
- 2006 44DA
- Engines
- Cummins QSC 500
Raymarine E120's
Onan 9kw generator
10' Zodiac with 10hp Tohatsu
I'm all about anything that can feed me information about what is going on with my boat. So what do the gauges tell you? Are they monitoring fuel pressure or do they indicate when the Racors need replacement?
- Jan 7, 2007
- 907
- Boat Info
- 2006 52SB, Ray Marine E120, Garmin 7612 through BOE site sponsor,
- Engines
- QSM11s
Suction indicates the replacement need and I’m sorry to say laying here in bed I do not recall the recommendation of replace PSI.
my3sons
Well-Known Member
- Feb 24, 2009
- 3,046
- Boat Info
- 2004 400DB, Onan 9 kw Generator, Highfield RIB,
- Engines
- Cummins 6CTA M-3
As John said , they measure vacuum. As the filter plugs, it is harder for the pump to draw fuel through the racor, the gauge measures the amount of draw or vacuum required to pull the fuel through. Gauges without the drag needle require you to go into the er while underway and look to see. The drag needle gauges tell you what the highest vacuum was. Rule of thumb from Parker/racor is filters should be changed when readings are 8 to 14 in.hg +/- (going from memory).
Your engine manufacturer will spec a number that they don’t want the pumps to have to exceed. If your tanks are clean, you shouldn’t get plugged in a years time in a pleasure craft. Change your filters once a year regardless of vacuum as the aqua block supposedly doesn’t last indefinitely. The primary reason I have the gauges is that they will hopefully give me a heads up on a dirty tank of fuel and I can start the cleanup process.
ZZ13
Well-Known Member
Interesting I checked online and the gauge alone is about $20 more than the gauge with the t-handle. I just need the gauge as I have dual Racors with the gauge mounted on the fuel line. Guess I'll be tossing a couple of t handles.
FootballFan
Well-Known Member
I have the tattle tales on my racors. Love them. Part of engine check process, easy to see when changes occur.
Robski97
Well-Known Member
A few years back I got a load bad diesel... WHAT A FING MESS. Engines ran like crap, The gauges didn't have the tattle tale but showed underway the filters were clogged ! Was not fun rolling around down there underway.
Rob
Rob
JVM225
Well-Known Member
I installed the same ones on my engine Racors last weeekend.
Looks, like you used Teflon tape on yours. I didn’t use it in mine.
Might have to do it in the end though because even though the T handles are pipe thread I had to fool around with them a bit to get the gauges to a useable orientation.
I changed the filters last November as part of the winterization routine so they don’t need changing again right now but I have the drain valves ready to install the next time I change the filter elements.
Looks, like you used Teflon tape on yours. I didn’t use it in mine.
Might have to do it in the end though because even though the T handles are pipe thread I had to fool around with them a bit to get the gauges to a useable orientation.
I changed the filters last November as part of the winterization routine so they don’t need changing again right now but I have the drain valves ready to install the next time I change the filter elements.
