bbq tick due to.... modest hydrolock?

[accel]

Yes, you can laugh, go ahead.

https://en.m.wikipedia.org/wiki/Hydrolock

The article says hydrolock may happen even due to excessive fuel entering cylinders.

Passenger side is known for extra oil vapors. What if they occasionally accumulate and cause very minor hydrolock?

Not enough to bend rods like in the link above but enough to cause excessive bearing wear.

'18+ have higher compression, so easier to get into hydrolock.

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[Condor1970]

Yes, you can laugh, go ahead.

https://en.m.wikipedia.org/wiki/Hydrolock

The article says hydrolock may happen even due to excessive fuel entering cylinders.

Passenger side is known for extra oil vapors. What if they occasionally accumulate and cause very minor hydrolock?

Not enough to bend rods like in the link above but enough to cause excessive bearing wear.

'18+ have higher compression, so easier to get into hydrolock.

i would think any kind of ignition issue that causes something that audible would be picked immediately by the knock sensors. They're pretty sensitive.

Also, if Ceratec works in quieting the engine, why would adding Ceratec suddenly cause the injection system to stop putting too much fuel into the engine?

 

[accel]

i would think any kind of ignition issue that causes something that audible would be picked immediately by the knock sensors. They're pretty sensitive.

Also, if Ceratec works in quieting the engine, why would adding Ceratec suddenly cause the injection system to stop putting too much fuel into the engine?

I meant, hypotetically oil can get into cylinders through vent system. I've seen people draining huge amounts from passenger engine block catcg cans at youtube. I've read people post at this forums, that some cars have noticeable amount of oil in passenger side catch cans after spirited driving... I've seen oily intake valves picture of someone's 18 stang at this forum.

What if excessive oil is intermittently getting into cylinders and cause minor hydrolocks here and there that do not cause catastrophic engine failure but excessive bearing wear that results in a tick?

Ceratec is just masking the tick by filling in the gap. It is not preventing the hydrolock.

P.S. Another explaination could be - one side of the engine is having different compression than the other due to carbon buildup, and that unbalance causes the tick. But that does not explain tick immediately after the oil change....

Even hydrolock theory is not explainable by oil change. Unless new oil filled into the engine gets somewhere in the area besides oil pan that is easily drawn into intake.

 

[Condor1970]

I meant, hypotetically oil can get into cylinders through vent system. I've seen people draining huge amounts from passenger engine block catcg cans at youtube. I've read people post at this forums, that some cars have noticeable amount of oil in passenger side catch cans after spirited driving... I've seen oily intake valves picture of someone's 18 stang at this forum.

What if excessive oil is intermittently getting into cylinders and cause minor hydrolocks here and there that do not cause catastrophic engine failure but excessive bearing wear that results in a tick?

Ceratec is just masking the tick by filling in the gap. It is not preventing the hydrolock.

P.S. Another explaination could be - one side of the engine is having different compression than the other due to carbon buildup, and that unbalance causes the tick. But that does not explain tick immediately after the oil change....

Even hydrolock theory is not explainable by oil change. Unless new oil filled into the engine gets somewhere in the area besides oil pan that is easily drawn into intake.

If you were getting any measurable amount of oil recirculating through the intake to the combustion chamber, you would see an enormous amount of smoke coming out of the exhaust long before it would cause any kind of hydro lock. If you are emptying your catch can once every two weeks and get an ounce or two of oil, that really isn't a big deal, since that is a very tiny amount accumulated over hundreds of miles of driving. It's actually quite normal to open the catch can, and see a little oil in there. That's purpose of it. Now if you find a ton of metal flakes in your catch can, then I would be worried.

I still think it's one of two things. Piston slap or crank end play etc, or possibly an oil cavitation issue. As carbon builds up in the oil, it could be cushioning parts to quiet the tick over time. Replacing the oil suddenly removes that carbon, and the tick returns. If it's oil cavitiation, then maybe the carbon is affecting the cavitation by changing the properties of the oil over time. Same idea would also apply to why Ceratec additive tends to help in quieting the tick immediately when added to the oil..

 

[GT Pony]

The BBQ tick is like Big Foot. You see the foot prints, but you never see what's making the foot prints .

 

[Condor1970]

The BBQ tick is like Big Foot. You see the foot prints, but you never see what's making the foot prints .

Well, at least it's not as bad as Elvis sightings.

 

[accel]

If you were getting any measurable amount of oil recirculating through the intake to the combustion chamber, you would see an enormous amount of smoke coming out of the exhaust long before it would cause any kind of hydro lock. If you are emptying your catch can once every two weeks and get an ounce or two of oil, that really isn't a big deal, since that is a very tiny amount accumulated over hundreds of miles of driving. It's actually quite normal to open the catch can, and see a little oil in there. That's purpose of it. Now if you find a ton of metal flakes in your catch can, then I would be worried.

I still think it's one of two things. Piston slap or crank end play etc, or possibly an oil cavitation issue. As carbon builds up in the oil, it could be cushioning parts to quiet the tick over time. Replacing the oil suddenly removes that carbon, and the tick returns. If it's oil cavitiation, then maybe the carbon is affecting the cavitation by changing the properties of the oil over time. Same idea would also apply to why Ceratec additive tends to help in quieting the tick immediately when added to the oil..

Agree on smoke.

The only thing I saw was passenger side exhaust had noticeable amount of carbon buildup versus driver. That was when I had stock exhaust. Now I have exhaust with xpipe and I guess that evens traces of carbon left vs right.

 

[Deleted member 35644]

"Minor Hydro-lock" is like saying "kinda pregnant". There are no degrees of hydro-lock, only degrees of damage resulting from it. An engine is either hydro-locked, or it isn't. Excessive fuel entering cylinders is called a rich condition. If it's so rich that it can't be compressed, preventing one or more pistons from traveling through the compression stroke, the engine becomes hydro-locked. It may remain that way, or it may free itself after something bends or breaks. You'd have to have one hell of a fuel delivery problem for this to happen.

People need to stop sitting around inventing crap answers to problems that aren't likely, or even possible.

 

[GT Pony]

I meant, hypotetically oil can get into cylinders through vent system. I've seen people draining huge amounts from passenger engine block catcg cans at youtube. I've read people post at this forums, that some cars have noticeable amount of oil in passenger side catch cans after spirited driving... I've seen oily intake valves picture of someone's 18 stang at this forum.

What if excessive oil is intermittently getting into cylinders and cause minor hydrolocks here and there that do not cause catastrophic engine failure but excessive bearing wear that results in a tick?

You'd literally have to put mass volumes of oil into the cylinders to "hydro lock" them - like pouring a quart into the engine in 5 seconds while it was running. No way the small amount of vapors going into the intake manifold is going to do anything like that.

There are millions of cars on the road that suck crankcase oil vapors into the intake manifold via the PCV system, yet they don't have the BBQ tick. On a V8 like the Coyote, one side of the engine might ingest more vapors compared to the other based on where the vapors enter the intake, but all that's going to do is possibly cause that side to have a bit more deposits on the intake valves, spark plugs and piston tops. And also, there's no way one side is going to get so carboned up in 1000 miles than the other side to cause any engine problems unless it was sucking quarts of oil through the PCV system in a short amount of time.

 

[Bald Menace]

no such thing as "modest" hydrolock. you cant compress a liquid period so hydrolock is catastrophic every time

 

[MKMotorsport]

It is either hydrolocked or not, there is no shade of grey there. It would take ALOT of oil to hydrolock an engine- remember two stroke engines in fact burn all of their lubrication oil and they do not hydrolock, nor make any weird ticking noises while burning oil. I have breathers on mine so no intake oil whatsoever and had recently developed the BBQ tick at 40k+ miles. I can say with confidence the noise is not due to intake oil ingestion.

edit: And if you were burning that much extra fuel you'd have misfire and o2 sensor codes, among other issues.

 

[accel]

It is either hydrolocked or not, there is no shade of grey there. It would take ALOT of oil to hydrolock an engine- remember two stroke engines in fact burn all of their lubrication oil and they do not hydrolock, nor make any weird ticking noises while burning oil. I have breathers on mine so no intake oil whatsoever and had recently developed the BBQ tick at 40k+ miles. I can say with confidence the noise is not due to intake oil ingestion.

edit: And if you were burning that much extra fuel you'd have misfire and o2 sensor codes, among other issues.

yes, the idea of hydrolock was dismissed in this thread.

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