1985 TPI Fuel Rail test port size

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09-03-2024, 06:34 PM

mcb55-210

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1985 TPI Fuel Rail test port size

Does anyone know offhand what size the pressure test port is on the fuel rail? I'd like to add a pressure gauge but will need to know the size to get the correct fittings! Plus... will it be possible to remove the pin from the test port? I appreciate your help!

Thanks!

Mike

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09-03-2024, 06:35 PM

Tuned Performance

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Re: 1985 TPI Fuel Rail test port size

An4 fitting . Are you asking about the schrader valve ?

Last edited by Tuned Performance; 09-03-2024 at 07:12 PM.

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09-03-2024, 07:09 PM

mcb55-210

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Re: 1985 TPI Fuel Rail test port size

Quote:

Originally Posted by Tuned Performance

An4 pin ? Are you asking about the schrader valve ?

Yes, I should have been clearer in my description. Is it removable so the pressure gauge can function?

Mike

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09-03-2024, 07:11 PM

Tuned Performance

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Re: 1985 TPI Fuel Rail test port size

Yes the schrader is removable. I wouldn’t leave a gauge on the rail at all times. A real fire hazard.

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09-03-2024, 08:18 PM

mcb55-210

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Re: 1985 TPI Fuel Rail test port size

Quote:

Originally Posted by Tuned Performance

Yes the schrader is removable. I wouldn’t leave a gauge on the rail at all times. A real fire hazard.

Makes sense. So are there fittings available to replicate the fittings that are on the test gauges that are found at the local parts store chains?? Something that would depress the pin when installed. Then I would just make one I can use as needed.

Thank you again.

Mike

Last edited by mcb55-210; 09-03-2024 at 08:20 PM. Reason: Additional comment

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