what kind of fuel injection presure tester should I buy?

   I would like to have this tool in my box...I would only be using it to test my 2 blazers so a expensive multi-use tool is not required...Im looking online for them but Im unsure of the right tool....Hopefully its not too expensive...Any feedback would be much apreciated...Thanks

For the Blazer's that you have, any typical tester would do.  Its when you get into some other makes/models and/or TBI applications where you need a more expensive tester that comes with the appropriate fittings.  I think my tester cost me $25...  I just bought the cheaper one from Advanced Auto.  And I've used it a LOT!

thanks swartlkk,  I work at an automotine parts stamping plant..I may try to put something together on my own...I wonder is a liquid filled guage with a adapter used for high presure nitrogen conection would work...

A liquid filled gauge would work fine so long as it was meant for use with petroleum products.

I had posted the actual connection type and thread used in the fuel pressure test ports awhile back.  Let me see if I can dig it up.

Here ya go: Fuel Pressure Gauge Adapter