Inline injection pump td42

[Ford f100]

Hi guys I’m new here looking for a bit of advice,I’ve had a old td 42 engine out of a scrap car some 15 years now,rebuilt it had the inline injection pump rebuilt to,now I’m putting this in a 64 ford f100 & plumbing up the fuel system I’ve come to a stop looking at the top of the pump from the front of the engine you have fuel in ,then at the rear there’s 2 more pipped unions the rear one I think goes onto the throttle body I think,then there’s one next to the last one ,can anybody tell me where this should be connected to? Thanks

[Tip12345]

it might be the fuel return to the tank

[Rossco]

Did the td42 ever have an inline pump, thought it was just the rotary just out of interest sake. . .

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[mudski]

Did the td42 ever have an inline pump, thought it was just the rotary just out of interest sake. . .

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I think some of the early TD42 Nissan buses and light trucks had inline pumps. Around early to mid 80's.

[Ford f100]

Yes its a early nissan patrol pump,the first td42 s had these pumps on before they went rotary,dont think a fuel return,no sure if its some sort of breather,hoping someone out there in oz will have this pump on theres & be able tell me

[Ford f100]

Having searched the net ,I think it’s a breather & goes into the standard air filter

[Portdyno]

The front connection is the fuel inlet, the rear connection is the vacuum governor connection and goes to the throttle butterfly.