User Login    
 + Register
  • Main navigation
Login
Username:

Password:


Lost Password?

Register now!
Fast Search
Slow Search
Google Ad



Main : Mechanical : Engine oil pressure safety switch for use with electronic fuel pump

[<   Previous  646  647  648  649  650  651  652  Next   >]

oil pressure safety switch for use with electronic fuel pump
oil pressure safety switch for use with electronic fuel pumpPopular
SubmitterevilsimMore Photos from evilsim   Last Update2012/1/23 7:18    Tell a friendTell a friend
Hits6454  Comments3    0.00 (0 votes)0.00 (0 votes)
so basically this came about as I wanted to only have my fuelpump (electronic mounted near the fuel tank) pumping, when the motor has oil pressure. This then arises the question, what if the car has not started in months and the fuel lines are dry, so I implemented a primer switch to prime the carbs before actually turning over the motor.

It uses 3 relays, but you could simplify my diagram my removing the 'oil psi safety switch relay' and wiring 87 on the primer relay onto 86 on the fuel pump relay. I just like relays and somehow ended up using 3 of them.. in rerospect, 2 relays would work fine.

[<   Previous  646  647  648  649  650  651  652  Next   >]

The comments are owned by the poster. We aren't responsible for their content.

Poster Thread
Andrew73
Posted: 2015/6/30 9:13  Updated: 2015/6/30 9:13
Just popping in
Joined: 2013/6/10
From: Sydney, Australia
Posts: 9
 Re: oil pressure safety switch for use with electronic fu...
On our race car we use a Peel LPG safety switch P/N CP30 to power the fuel pump.
Uses ignition pulse signal to activate, not oil pressure.
Then have another momentary switch to activate it for priming, works well.

Poster Thread
ddgonzal
Posted: 2015/6/30 2:17  Updated: 2015/6/30 2:17
Moderator
Joined: 2001/5/3
From: 48 North
Posts: 31575
 Re: oil pressure safety switch for use with electronic fu...
Very similar to Datsun factory electric fuel pump wiring.

See Fuel Pump Relay Circuit

Poster Thread
evilsim
Posted: 2012/1/23 9:24  Updated: 2012/1/23 9:24
Home away from home
Joined: 2003/11/30
From: Sydney.au
Posts: 597
 Re: oil pressure safety switch for use with electronic fu...