DIY fuel pressure gauge tool

[Secret Outing]

I have a lot of questions about building a fuel pressure gauge test tool for use on my 2002 Seadoo GTX DI. Similar to the one in the shop manual.

1.) Picture isn’t clear enough in the manual but is that a a needle valve just below the gauge?
When I googled the part number hoping to find clearer photos this is what I found.

Here it looks like a needle valve is connected with the clear hose. Maybe this is a homemade pressure tester? But it does make sense to close off the clear hose part so fuel doesn’t shoot out of it. Speaking of the clear hose -

2.) What is the clear hose just below the gauge for? I don’t remember seeing it being used in the rest of the manual.
Is it useless? If so i can understand why other people have omitted it from there designs.

3.) Being a high pressure deal I’m concerned about the connections to fittings like the t-fitting. What is the safest connection type for a diy design?

4.) Im using the gauge from this kit
Are there any other parts in this kit besides the gauge and attached brass fitting that I can use in building the tool?

 

[glsmohio]

I have a lot of questions about building a fuel pressure gauge test tool for use on my 2002 Seadoo GTX DI. Similar to the one in the shop manual.
View attachment 43925
1.) Picture isn’t clear enough in the manual but is that a a needle valve just below the gauge?
When I googled the part number hoping to find clearer photos this is what I found.
View attachment 43926
Here it looks like a needle valve is connected with the clear hose. Maybe this is a homemade pressure tester? But it does make sense to close off the clear hose part so fuel doesn’t shoot out of it. Speaking of the clear hose -

2.) What is the clear hose just below the gauge for? I don’t remember seeing it being used in the rest of the manual.
Is it useless? If so i can understand why other people have omitted it from there designs.

3.) Being a high pressure deal I’m concerned about the connections to fittings like the t-fitting. What is the safest connection type for a diy design?

4.) Im using the gauge from this kit
View attachment 43927Are there any other parts in this kit besides the gauge and attached brass fitting that I can use in building the tool?

That's for compression you do not want to use that gauge. I built mine out of a kit on eBay let me find it real fast

 

[glsmohio]

This is what I used then just got the rest a the parts store like advance...

 

[Secret Outing]

I’ve read from other posts of people hacking there compression gauge to make fuel pressure tester

 

[jimmyluke]

I have a lot of questions about building a fuel pressure gauge test tool for use on my 2002 Seadoo GTX DI. Similar to the one in the shop manual.
View attachment 43925
1.) Picture isn’t clear enough in the manual but is that a a needle valve just below the gauge?
When I googled the part number hoping to find clearer photos this is what I found.
View attachment 43926
Here it looks like a needle valve is connected with the clear hose. Maybe this is a homemade pressure tester? But it does make sense to close off the clear hose part so fuel doesn’t shoot out of it. Speaking of the clear hose -

2.) What is the clear hose just below the gauge for? I don’t remember seeing it being used in the rest of the manual.
Is it useless? If so i can understand why other people have omitted it from there designs.

3.) Being a high pressure deal I’m concerned about the connections to fittings like the t-fitting. What is the safest connection type for a diy design?

4.) Im using the gauge from this kit
View attachment 43927Are there any other parts in this kit besides the gauge and attached brass fitting that I can use in building the tool?

As far as the clear hose just after the gauge is concerned there is a push button right in front of that hose which simply releases the pressure. You can simply put the end of the clear hose in a container push the button to release the fuel pressure then you can safely disconnect your tester from the system. Most fuel pressure and compression tester’s have a release similar to what is shown in that picture.

 

[statikuz]

You've kinda asked these same questions in your other thread already.

2002 Seadoo gtx di

Like I said over there, the only useful part of that compression tester is the pressure gauge itself. You can buy a 1/4" NPT pressure gauge in whatever style you want for way less than what that compression tester probably cost. Other than that you just need a tee fitting, some hose barbs, and some 5/16" fuel injection hose (not regular fuel line). All you're doing is putting your pressure gauge inline with the fuel supply line to the rail. You can secure it all just fine with regular hose clamps.

You don't specifically need the extra hose or needle valve after the gauge if you're just testing inline pressure but I guess it would be useful to release the pressure and drain the fuel from your test rig. If you want to test the pump itself (outlet to inlet) then you'll also need a valve inline with your tester to restrict the flow. In the manual they use a pressure relief valve because the fuel pump can pump at pretty high pressure.

The reason its all modular is because they use the same gauge to test air compressor and oil pump pressure with different adapters.

Since you cut out the OEM fuel filter you don't even need to get the steel quick connect fittings. You just need the pressure gauge, tee, and two hose barbs and you can stick that little module in place of your filter to test.