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The mkiv Supra Owners Club

Priming the fuel system on an NA?


Homer

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Stupid question, but why do you need to? Can't you just turn it over for a while 'till fuel gets through from the tank?

 

Pretty much everything is built from scratch. Pump is not tested, lines are all new, has a different FP ECU, new wiring, return, system empty for at least 3 years, etc so want to test for leaks and other issues before doing a full startup (which provided I can get the new lines in should be this weekend :) )

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Pretty much everything is built from sctracth. Pump is not tested, line are all new, has a different FP ECU, etc so want to test for leaks and other issues before doing a full startup (which provided I can get the new lines in should be this weekend :) )

 

Aha fair play, so if you'd just been driving about in your factory NA and carelessly ran out of fuel, you could just top it up then do as I describe, or would that still be an issue?

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Aha fair play, so if you'd just been driving about in your factory NA and carelessly ran out of fuel, you could just top it up then do as I describe, or would that still be an issue?

 

If it were simply running out of fuel it wouldn't be an issue, considering the cars history and it's almost a new fuel system it's just a sensible precaution to prime, presurise and test it before firing up.

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If it were simply running out of fuel it wouldn't be an issue, considering the cars history and it's almost a new fuel system it's just a sensible precaution to prime, presurise and test it before firing up.

Gotchya. Thanks for satisfying my curiosity, sorry I can't help lol :D

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couldnt u just stop it firing and crank it, like you would do to built up the oil pressure. at the same time you would see if there are any other leaks, unless you want to purely run the fuel pump or arent ready.

 

No, I only want to prime the fuel system. Just need to know the correct points to bridge on the NA diag port.

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