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DIY: Do It Yourself
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Old 02-16-2014, 08:47 AM   #1
markusmarkus
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Pre-oiler Idea

I'm looking for comments on a potential (cheapee) pre-oiler idea. Basically, I would install a normally closed/press to open switch in the console. This switch, when in the "open" position would cut the power to the fuel pump relay. The idea is to press the switch to open the contacts and crank the engine. Once the oil pressure idiot light goes off the switch is released. Releasing the switch sends power to the fuel pump relay and the engine starts.

Comments/races/rants are welcome.


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Old 02-16-2014, 11:47 AM   #2
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What about using a delayed timer? They have a built in relay.
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Old 02-16-2014, 01:00 PM   #3
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Why?
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Old 02-16-2014, 01:02 PM   #4
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That seems like an answer to a question no one was asking.
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Old 02-16-2014, 01:02 PM   #5
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I commented in the other thread as well. It would be very easy to do. However you're not accomplishing anything. The engine is still having to crank to circulate the oil.
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Old 02-16-2014, 05:48 PM   #6
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Sounds like a reasonable idea except that the fuel rail holds pressure from when the car was previously run. It normally takes a couple of days for it to dissipate. With any sort of residual pressure in the fuel rail the engine will kick over the moment you turn the key. It will just stutter and then stall a few seconds later. I know this as I go through this procedure when I do an oil change to fill the OFH and oil gallery prior to starting the engine. Without removing all pressure from the fuel rail it immediately kicks over. As such, this probably doesn't achieve what you want. I'm assuming you want to circulate oil throughout the engine prior to initial start.
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Old 02-18-2014, 08:33 AM   #7
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I hadn't thought about that!!

Thanks!


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