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04-26-2017, 04:03 PM | #1 |
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Waking Up Question
Hello,
Cars been sitting all winter with the battery disconnected. Now I know when I start it it's going to want to jump up to 2K and then settle down to an idle. I don't want that to happen on a fairly "dry" motor. I usually crank it until I see oil pressure with the rear impact switch disconnected first. Just hate it how the rpms flash up at the beginning. Can I disconnect the IAC or something similar to prevent this? Thanks,Jim |
04-26-2017, 05:10 PM | #2 |
700 HP Mach
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Re: Waking Up Question
its pretty much gonna happen at this point. Based on several things Ive seen Im not convinced spinning it over like that gets oil to the top as needed. Also you can just put the gas pedal to the floor and it shuts off the injectors while cranking.
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04-26-2017, 05:34 PM | #3 | |
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Re: Waking Up Question
Quote:
Thanks, Jim |
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04-26-2017, 06:23 PM | #4 |
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Re: Waking Up Question
The battery being unhooked is the biggest part of that problem. All the learned tables are gone and it has to start over. I just ran this by Todd warren who's a mod motor expert and he says to just start the car.
You're not putting enough oil volume or pressure into the heads turning it over with the key so now your spinning em still pretty much dry at low speed then firing the car up and spinning them still basically dry. The pump is on the crank, the faster it spins the fast the pump spins and moves the oil along
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03 dsg mach1 - MPR built 9.5:1 motor, D1, cams, ported intake, full exhaust, magnum t56, built rear, E85 etc... '12 F150 FX2 Supercrew with Ecoboost daily beater |
04-26-2017, 08:40 PM | #5 |
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I remember reading that Ford has the RPM kick up like that in order to get the oil to the heads faster. Whether it's true or not I don't know.
Sent from my SAMSUNG-SM-G935A using Tapatalk
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04-26-2017, 08:46 PM | #6 |
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Re: Waking Up Question
typically the rev and temporary high idle are to fire off the cats for emissions compliance purposes. It may help with that too but Ive never seen it stated
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04-26-2017, 08:57 PM | #7 |
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Re: Waking Up Question
[QUOTE=DSG2003Mach1;1625922]The battery being unhooked is the biggest part of that problem. All the learned tables are gone and it has to start over. I just ran this by Todd warren who's a mod motor expert and he says to just start the car.
You're not putting enough oil volume or pressure into the heads turning it over with the key so now your spinning em still pretty much dry at low speed then firing the car up and spinning them still basically dry. The pump is on the crank, the faster it spins the fast the pump spins and moves the oil along[/QUOTE Thanks, yeah had the batter disconnected because I was working on it over the winter. Just hate how it'll rev like that on first fire up. Jim |
04-27-2017, 01:28 PM | #8 |
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Re: Waking Up Question
If you're really concerned you could make an oil primer out of a garden spray can. Then you can prelube the engine before cranking it.
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04-27-2017, 02:55 PM | #9 |
700 HP Mach
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Re: Waking Up Question
which you can make for around $20 @ lowes. Engine builder approved (youd need to drain oil from the crank case to make room for whats pumped in by the sprayer)
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03 dsg mach1 - MPR built 9.5:1 motor, D1, cams, ported intake, full exhaust, magnum t56, built rear, E85 etc... '12 F150 FX2 Supercrew with Ecoboost daily beater |
04-27-2017, 04:35 PM | #10 |
Lorraine's driver
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Re: Waking Up Question
Too bad they don't make an oil meant to go in a car that will hibernate for several months. It would be cool if that oil could somehow leave a protective coating behind for that initial startup. Then you would just change the oil once you got her running okay. Mine sits over the winter, but I've been starting it every few weeks for this same reason.
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04-27-2017, 05:03 PM | #11 |
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Re: Waking Up Question
I feel like every few weeks is worse. We've got a 95 town car that's a 4.6 sohc. It sits at the summer house all but June-July and November. We fire it up and go when we get there, car still runs like a champ.
Starting the car during storage also builds up a lot of moisture unless it's idling for a long time, also not a great thing
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