Smoking after gas in oil

[standup303]

Hey all, fairly new 440 was running fine and had the ECU/pickup take a crap. While trouble shooting this I cranked the engine a lot. When I finally got the car started, I noticed a 1/2 quart puddle under the car and shut it off after about 15 seconds.

The puddle was a gas/oil mix. Changed my oil and had 15 quarts of oil/gas mix….yay. Assuming gas was filling the combustion chamber and then leaking into the crank case?

New oil and filter, cranked her, let her get up to temp in the garage. White smoke the whole time, running/idling like crap. What do you all recommend I start looking at? Oil was not foamy/white. Fouled plugs from cranking not burning the fuel?

 

[Kendog 170]

Stuck float. Or bad seating float

 

[fishmens67]

Fouled plugs

If there was that much fuel in your oil, the plugs are fouled.
White smoke usually indicates water, change plugs and report back.

 

[fishmens67]

Stuck float. Or bad seating float

Check this.

 

[moparlvr166]

So, you're saying you had about 10 quarts of fuel clean out the combustion chambers, rings, pistons, cylinder walls, I don't know if you can do much to change this now. Get some oil into the cylinders and rotate engine a few times. I'm sure other will respond before starting again.

 

[standup303]

Stuck float. Or bad seating float

It’s a brand new AED carb that was running fine before hand and both sight glasses are at 1/2. Well front is about 2/3.

 

[fishmens67]

It’s a brand new AED carb that was running fine before hand and both sight glasses are at 1/2. Well front is about 2/3.

Are you using an electric fuel pump?

 

[RustyRatRod]

If you have a mechanical fuel pump, replace it.

 

[standup303]

Are you using an electric fuel pump?

It’s mechanical

 

[standup303]

If you have a mechanical fuel pump, replace it.

I just replaced the old mechanical pump because it was leaking from the gasket. New one has 15 miles on it. I am honestly not sure if it was the faulty pump or trying to crank the motor so much with the new pump that caused the fuel in the oil.

 

[fishmens67]

you won't know the status of the motor until the fouled plugs are changed.
The question is how much oil and residual fuel is left in the fouled cylinders.
I would change out the plugs and change the oil after a good warm cycle.

 

[standup303]

you won't know the status of the motor until the fouled plugs are changed.
The question is how much oil and residual fuel is left in the fouled cylinders.
I would change out the plugs and change the oil after a good warm cycle.

I’ll get some new plugs and report back. When I changed the oil I had a screen and a magnet and got zero metal thankfully.

 

[RustyRatRod]

I just replaced the old mechanical pump because it was leaking from the gasket. New one has 15 miles on it. I am honestly not sure if it was the faulty pump or trying to crank the motor so much with the new pump that caused the fuel in the oil.

Just remember, new doesn't mean good.

 

[fishmens67]

I just replaced the old mechanical pump because it was leaking from the gasket

leaking fuel or oil, if it was fuel it is possible the fuel was transferred to the crankcase at that time.

 

[65TerrorCuda]

That much gas in the oil is almost guaranteed blown fuel pump diaphragm. If you didn't catch it fast enough it'll be rings n hone minimum. Hopefully I'm wrong though

 

[TT5.9mag]

I agree with the post above. How/where the fuel got in there is probably the least of your concerns at this point. The rings and cylinder walls take a beating when that much fuel is in the crankcase. The white smoke is weird but maybe it pushed out a head gasket and is now burning coolant. Seems there is some investigating that needs to happen.

 

[RustyRatRod]

I'd be worried about rod bearings first.

 

[fishmens67]

I would change out the plugs and change the oil after a good warm cycle.

Do this, I don't buy into the doom and gloom of needing new rings on a recent build due to excessive fuel.
I can't count how many times I've ran overly rich or filled the crankcase with fuel and didn't have a ring sealing issue after fixing the issue.
An electric fuel pump with a faulty regulator can fill up a crankcase quick after blowing fuel past the needle and seat, real quick , like up to the valley pan quick.

 

[fishmens67]

I'd be worried about rod bearings first.

yes, after he gets it running the pressure gauge should give a hint if there's a problem.

 

[TT5.9mag]

I'd be worried about rod bearings first.

Yea I should have added that to my post as a concern as well. But not just rod bearings. All of em.

 

[67Dart273]

You can blow rocker covers and pan off an engine with gas contaminated oil, I have been privy to at least two, and witnessed one. I would pull and inspect the pump. It is normally obvious. Will be washed nice and clean. Also look for leakage if there is an external bleed hole, which the OEM ones I think, all had.

 

[standup303]

Yea I should have added that to my post as a concern as well. But not just rod bearings. All of em.

How would I know if bearings are compromised?

 

[fishmens67]

you won't know the status of the motor until the fouled plugs are changed.

How would I know if bearings are compromised?

The oil pressure gauge should give you a good indication.
If the oil pressure is within the range at idle and peaks at the same range the bearings are probably still good.
You will not know until you fire it back up, one thing not mentioned is how is the cam. Did it lose a lobe?

 

[standup303]

The oil pressure gauge should give you a good indication.
If the oil pressure is within the range at idle and peaks at the same range the bearings are probably still good.
You will not know until you fire it back up, one thing not mentioned is how is the cam. Did it lose a lobe?

Thanks. Just picked up new plugs. Hope the cam is ok it is a roller.

 

[Dana67Dart]

New oil and filter, cranked her, let her get up to temp in the garage. White smoke the whole time, running/idling like crap

look at the easy stuff first. The oil was diluted by the gas and with so much in the crankcase surly got tossed around a lot.
At this point you dot have much to loose, assuming you have your fuel getting into the oil fixed, check the plugs check, your oil pressure and maybe do an pressure check on the cooling system

the white smoke might NOT be coolant, it might be remnants of the SUPER light oil (oil diluted by Gasoline)

Pull a valve cover and admire how clean the insides are.

Back in the day I bought a ford trunk with a 460, turns out it must have been using paraffin based oils and the insides were caked with sludge gunk not gritty, just like pudding. I did the Diesel in the oil trick and it worked astonishingly well.