fuel pressure gauge

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Getting ready to install fuel pressure gauge in truck (mechanical). Anyone have suggestion on where to tap in to fuel line? Want to read after filter so as to monitor filter condition.
 
Then you will need a gauge before the filter too.

For low pressure, run a line and read from Schrader valve using an adapter. I have a parts list somewhere for that.......Ill try and find and post it.
 
ended up pulling hose off back of schrader valve and tying in with barbed fitting worked great and easy
 
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