Vacuum Pressure Gauge for Fuel Filter

[HMBJack]

I'm thinking of adding a Vacuum Pressure Gauge to the extra "Out" fitting on my SS Yamaha Fuel Filer housing (holds my big Blue 10M filter).

However I can't find one which has a range measuring below -30PSI. Ideally, I think I want one that measures from minus zero to about 10PSI.

Below is an example of the minus Zero to 30.

https://www.amazon.com/gp/product/B0...0?ie=UTF8&th=1

For those who have installed one, any suggestions?

Thank you

[boscoe99]

I think you want a negative pressure aka vacuum gauge. One that reads from 0 ~ 10" Hg.

The gauge linked to won't provide the fidelity that is desired.

What is your budget?

I installed an automotive electronic manifold pressure gauge in my boat. Sensor at the filter. Gauge at the helm. Worked great. It let me extend the filter change interval by an order of magnitude. Gave me assurances before starting out that the filter was not going to be a problem.

[boscoe99]

https://www.grainger.com/product/41D...E&gclsrc=aw.ds

[DennisG01]

https://www.yamahaoutboardparts.com/...stall-question

Since that post, it has been working just fine. All good.

[HMBJack]

Thank you Boscoe. That link to the gauges however does not show what you installed - i.e. no sensor at the filter + gauge at the helm.

Hmmm..

[DennisG01]

Thank you Boscoe. That link to the gauges however does not show what you installed - i.e. no sensor at the filter + gauge at the helm.

Hmmm..

Both of our links show the sensor that we installed, which is also a gauge.

Your first post didn't say anything about having a remote display at the helm... your second post hints at that - is that what you're after? Truthfully, it's not really needed - this is not a gauge that needs to be closely monitored.

[HMBJack]

Got it. I like the simplicity of it being right at the fuel filter

Boscoe's post indicated "Sensor at the filter. Gauge at the helm" - this got me confused.

I will simply install one right at the filter and keep an eye on it. Thanks.

[DennisG01]

Got it. I like the simplicity of it being right at the fuel filter

Boscoe's post indicated "Sensor at the filter. Gauge at the helm" - this got me confused.

I will simply install one right at the filter and keep an eye on it. Thanks.

Oh, gotcha. I missed that part.

Yeah, the only reason we replace filters on a yearly basis is because it's good practice when you don't know the condition. In this case... since that post... I just repalced the filter this year - but it was primarily because I figured it was in there long enough.

[boscoe99]

https://www.glowshiftdirect.com/10-c...RoCQkMQAvD_BwE

[boscoe99]

https://www.ebay.com/itm/144148781545

[HMBJack]

Thank you Boscoe. Your links clarify everything for me.

Upon further review, my revised plan is to NOT install a vacuum gauge on the Fuel Filter because:
- I have twin engines and twin fuel tanks and can switch tanks (and filters) from port to starboard if one engine gives up the Ghost, and
- I carry extra fuel filters on board and can swap out a filter easily, and
- My helm is every bit of 20 feet from where my filters are located. Running a gauge to my helm would require lengthening the 9' cable in the kit, and
- Financially, I can buy alot of filters for the $100+ cost of the kit, and
- Never in my 15 years using my harbor's fuel dock have I experienced water or crud in my gas.

If I had a single engine set-up with no kicker, fishing 100% in the ocean like I do, I would definitely install a vacuum pressure gauge like Boscoe's. 100%.

So, I'm thinking I will switch to RACOR 2 micron filters (Vs. the current 10m) and drain a bit of gas once per year (I put 300 hours per year on my F300's).

And every two years (~600 hours), I will change out the 2 micron RACORS completely. Even this might be conservative.

[99yam40]

Thank you Boscoe. Your links clarify everything for me.

Upon further review, my revised plan is to NOT install a vacuum gauge on the Fuel Filter because:
- I have twin engines and twin fuel tanks and can switch tanks (and filters) from port to starboard if one engine gives up the Ghost, and
- I carry extra fuel filters on board and can swap out a filter easily, and
- My helm is every bit of 20 feet from where my filters are located. Running a gauge to my helm would require lengthening the 9' cable in the kit, and
- Financially, I can buy alot of filters for the $100+ cost of the kit, and
- Never in my 15 years using my harbor's fuel dock have I experienced water or crud in my gas.

If I had a single engine set-up with no kicker, fishing 100% in the ocean like I do, I would definitely install a vacuum pressure gauge like Boscoe's. 100%.

So, I'm thinking I will switch to RACOR 2 micron filters (Vs. the current 10m) and drain a bit of gas once per year (I put 300 hours per year on my F300's).

And every two years (~600 hours), I will change out the 2 micron RACORS completely. Even this might be conservative.

deciding to run 2 micron filters might be a good reason to put a cheap gauge on at least one of the filters to let you see how restrictive they become over time.

[panasonic]

I'm thinking of adding a Vacuum Pressure Gauge to the extra "Out" fitting on my SS Yamaha Fuel Filer housing (holds my big Blue 10M filter).

However I can't find one which has a range measuring below -30PSI. Ideally, I think I want one that measures from minus zero to about 10PSI.

Below is an example of the minus Zero to 30.

https://www.amazon.com/gp/product/B0...=UTF8&th=1

For those who have installed one, any suggestions?

Thank you

The gauge you linked from Amazon will work for your purposes if installed after the filter(the extra outlet port) like you said you would. That gauge measures inches of Mercury and it only goes to -30 as that is a perfect vacuum...which is not possible.

When installed with a new filter and engine running it should read a slight bit of negative pressure as the fuel pumps are sucking the fuel through the filter and even a new filter will have some restriction to flow. As the filter gets dirty then the gauge will read higher as it gets harder and harder for the fuel pumps to suck the fuel through them.