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914World.com _ 914World Garage _ L-Jet engine run stand

Posted by: PDXMike Jan 8 2021, 08:21 PM

I have a 75 1.8 with L-Jet. I have the motor out to replace some seals, and I'd really like to run it to check for leaks before I reinstall. What all do I need to have hooked up to get it to run out of the car?

I was planning to run a remote start switch, so just getting it to turn over shouldn't be a problem.

I plan to have:

1) The air intake and air flow meter connected
2) all the temp and pressure sensors, AAR, etc.
3) All the vacuum lines
4) fuel injector resistor pack
5) L-Jet brain box

Do I need the dual relay if I just hotwire the fuel pump?
Where/how does the L-jet brain get the signal from the ignition switch?
Do I need anything from the relay board?

Posted by: JeffBowlsby Jan 8 2021, 08:26 PM

Battery
FI harness
IGN harness
Dual relay
Fuel pump/filter/ regulator
Fuel/tank
HE’s

Posted by: PDXMike Jan 8 2021, 08:54 PM

I have the IGN harness, but do I need the relay board? And if I have the relay board, what inputs from the chassis harness do I need connect/switch?


Posted by: ClayPerrine Jan 9 2021, 07:43 AM

QUOTE(PDXMike @ Jan 8 2021, 08:54 PM) *

I have the IGN harness, but do I need the relay board? And if I have the relay board, what inputs from the chassis harness do I need connect/switch?


In an stock L-Jet system, the relay board is not used for the fuel system.

Clay

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