Startup after sitting LONG / Oil pressure

[POHLHAMMER]

After your car sits for an extended period of time ,
How many of you hold the gas peddle to the floor during startup to allow oil pressure to build before starting ?

It says you should anytime it sits awhile. I did it the other day for the first time.

Curious if everyone else says , ya duh ! or , what huh ?

Did not see this covered in a thread , but I could be mistaken.

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[Wiley Marmot]

I haven't/don't. How does holding the pedal down prior to pressing start build oil pressure? TY!

 

[LouG]

After your car sits for an extended period of time ,
How many of you hold the gas peddle to the floor during startup to allow oil pressure to build before starting ?

It says you should anytime it sits awhile. I did it the other day for the first time.

Curious if everyone else says , ya duh ! or , what huh ?

Did not see this covered in a thread , but I could be mistaken.

Hold the accelerator to the floor on a cold start? Where did you see/hear that?
It's a quick way to an engine rebuild, and has nothing to do with oil pressure

 

[POHLHAMMER]

It will just turn over without firing , which allows oil pressure to build up in all your internals. That way when it starts , your bearings are all well coated.

Just hold the pedal to the floor , then after it turns over awhile , let off the gas. It will immediately start up after that.

Just a good way to help extend the life of motor bearings, from harsh cold/dry starts.

 

[POHLHAMMER]

Hold the accelerator to the floor on a cold start? Where did you see/hear that?
It's a quick way to an engine rebuild, and has nothing to do with oil pressure

I'll let you sit back and learn.. No comment.

 

[LouG]

OK, I'll be damned. It doesn't fire when the pedal is floored. Never heard of that before.
Probably because I have never floored the pedal to start any car, except carbed, flooded engines.
In any case, with modern oils there's always a film of oil remaining in bearings, rings etc. If it has been sitting for weeks this might be a good thing.

 

[POHLHAMMER]

OK, I'll be damned. It doesn't fire when the pedal is floored. Never heard of that before.
Probably because I have never floored the pedal to start any car, except carbed, flooded engines.
In any case, with modern oils there's always a film of oil remaining in bearings, rings etc. If it has been sitting for weeks this might be a good thing.

Yuup. It is something that your supposed to do when it sits a extended period of time. I am going to get in the habit, since ours is mostly a WD.

 

[86pagt]

Never have done it but have seen it and read about it.. It’s called flood mode

 

[LouG]

Never have done it but have seen it and read about it.. It’s called flood mode

Makes sense, if an injector leaks.

 

[robvas]

You cannot build pressure by turning the engine over with the starter on a modular engine. It's a Gerotor oil pump. Doesn't turn fast enough, ford even says this in the engine docs. It's not like the old style engines and oil pumps. You can pre-lube it with a pump

 

[Skye]

It's a topic of debate, similar to octane, oil brands and what the Coyote tick is.

The procedure is for starting a car if the engine has been flooded with fuel. It spins the engine, the injectors staying off. Oil pressure can build as a result.

I store my vehicle and do not pre-oil it when starting in the Spring. I just start it and go. Oil analysis continues to show all parameters at nominal readings.

A few moments after shutdown, any hot oil that can drain to the pan, will. The oil filter will not empty. The way my oil cooler is attached, it will not empty. While the vertical galleys will have nothing in them, there will be some oil left in the horizontal ones. The internal parts will continue to be coated.

I've left the oil recovered from my catch can in an open container for almost a year, just to see what would happen. Results? Nothing. Zero noticeable evaporation or change in appearance.

I do have a concern about potentially spinning and spinning an engine with low oil pressure. I don't have an answer for that. I prefer getting to the expected pressure as quickly as possible. For some, I've read posts it can take some time for any meaningful pressure to build.

In studying museums last year, processes were often different for pre-war vs. post-war cars. In pre-war vehicles, distributors were removed, a tool inserted and oil circulated beforehand. In post-war cars, virtually everyone just started the car.

Finally, consider the countless vehicles stored before, the process being unavailable or not used. Nothing related to engine or drivetrain damage trended out as a result. And all the oil changes done, no pre-oiling performed before start.

Neither process appears to be causing damage. And there are limits (hot long can store before start. how long can spin with little pressure) to each procedure.

With so many people not pre-oiling and no noticeable effects in performance or drivetrain service life, I continue to start-and-go.

YMMV.

https://www.google.com/search?q=mus...HS2tE24QrQIoAnoECCcQAw&biw=1470&bih=747&dpr=2

 

[POHLHAMMER]

You cannot build pressure by turning the engine over with the starter on a modular engine. It's a Gerotor oil pump. Doesn't turn fast enough, ford even says this in the engine docs. It's not like the old style engines and oil pumps. You can pre-lube it with a pump

That is for a 5.0 Coyote? I thought it had oil pump gears attached directly to the crank ? I don't think what you shared applies here.

Edit: I learned a bit more. I did find that a Gerotor does still pump at low RPM's .. ?

 

[POHLHAMMER]

Heres something I found. I suppose the priming is the ultimate way.

I brought this up to learn , so Im open to all advice.

 

[owlhoot]

I read about this "Clear flood Mode" method a few years ago. I use it if the f150 has been sitting for a while in the winter, Does it do anything????? In theory it should

 

[AZ_Ryan]

After your car sits for an extended period of time ,
How many of you hold the gas peddle to the floor during startup to allow oil pressure to build before starting ?

It says you should anytime it sits awhile. I did it the other day for the first time.

Curious if everyone else says , ya duh ! or , what huh ?

Did not see this covered in a thread , but I could be mistaken.

Where does it state this in the manual, and how long is sitting for "a while"?

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