1994 GM P-30 TBI ?s

[udidwht]

Much appreciated, when I get the TBI off I'll pull the numbers off the injectors. I'd indeed prefer to have them serviced as opposed to buying unknown ones.

Any recommendations on a fuel pressure gauge set up that connects to TBI?

[dave w]

Any recommendations on a fuel pressure gauge set up that connects to TBI?

I recommend "Not Installing" a fuel pressure gauge setup. Under hood temperatures will affect fuel pressure gauge accuracy.

I recommend modifying or buying a TBI fuel inlet fitting to allow easier access to check fuel pressure, if / when needed to check fuel pressure: https://marine-performance-parts.com...843505774.aspx

tbifuelpsifitting.JPG

[udidwht]

I recommend "Not Installing" a fuel pressure gauge setup. Under hood temperatures will affect fuel pressure gauge accuracy.

I recommend modifying or buying a TBI fuel inlet fitting to allow easier access to check fuel pressure, if / when needed to check fuel pressure: https://marine-performance-parts.com...843505774.aspx

tbifuelpsifitting.JPG

Appreciate that. I just picked up that adapter. I take it it replaces the inlet fitting on the TBI? Of the (2) fittings which is the inlet? Can't recall off the top of my head if they differed in size. I do know that both come from the rear side go into the TBI (left/right). I've go a pic I'll post up.

[udidwht]

Here's a link to a pic of the engine...

https://www.dropbox.com/s/ow3nt7k4hf...B1%5D.jpg?dl=0

I'm going to say the one on the right. Take that back looking at the pic closer it appears the inlet is on the drivers side.

[dave w]

Usually the inlet fuel line is 3/8" and the outlet (return) is 5/16". Likely the inlet fitting Will Not Fit the outlet fitting.

[tayto]

I add a schrader valve so i can use a regular automotive fuel gauge. I always thought having a gauge permanently mounted under the hood was a bad idea. I've also heard that heat affects the accuracy as well

https://www.dieselorings.com/schrade...-1-8-mnpt.html

[udidwht]

I add a schrader valve so i can use a regular automotive fuel gauge. I always thought having a gauge permanently mounted under the hood was a bad idea. I've also heard that heat affects the accuracy as well

https://www.dieselorings.com/schrade...-1-8-mnpt.html

Great! I'll pickup the schrader valve as well. Gone this far I may as well pick up a fuel pressure kit. Any recommendations?

[udidwht]

I recommend "Not Installing" a fuel pressure gauge setup. Under hood temperatures will affect fuel pressure gauge accuracy.

I recommend modifying or buying a TBI fuel inlet fitting to allow easier access to check fuel pressure, if / when needed to check fuel pressure: https://marine-performance-parts.com...843505774.aspx

tbifuelpsifitting.JPG

FYI...that fitting leaked at the threaded areas on both the plug and the fuel schrader valve. Applied Permatex 2 prior to install. Reinstalled the OE fitting no leak. Contacted CFM for refund.

[dave w]

FYI...that fitting leaked at the threaded areas on both the plug and the fuel schrader valve. Applied Permatex 2 prior to install. Reinstalled the OE fitting no leak. Contacted CFM for refund.

Thank you for sharing your experience with the CFM fitting.

[udidwht]

Anyone know of a well made fitting that won't leak?

[tayto]

Anyone know of a well made fitting that won't leak?

did you make sure the small plastic seal was on the end?

[udidwht]

did you make sure the small plastic seal was on the end?

Did indeed. The leaks were at the fitting threads.