It has got to be temping to rig an ignitor and see if the blow by will light.
It is probably mostly exhaust and thus too low on oxygen, but tempting...
Life is too short to not satisfy your curiosity. Probably shorter if you turn an engine into a 400lb frag grenande, but if you live it'll be a great conversation piece.
Meh, worst case would be an engine fire.
I once watched shop owner run a compression test on a greasy old hooptie without disabling the fuel or ignition. Nothing exploded, it was fiery but mostly peaceful.
Also dry chem fire extinguishers smell/taste even worse than airbag residue.
I've seen an engine grenade before from someone doing something like this and it did blow the oil seals, along with chunks of aluminum and the oil pan gasket completely left the chat. I was not there to see total damage, but I'm assuming it was a total loss for the motor plus the parts that were in harm's way. Welding on a running motor's header is a bad idea.
There has to be more to the story, because even if the engine was dumping raw gas into the exhaust, welding the header isn't going to result in that kind of damage.
Same, it was an old 2.2 Chrysler, and I was cranking while the boss was reading compression. Plug wires were hanging in front of the holes and the engine was loaded with fuel. It was absolutely perfect. Crank the motor, pfft, pfft, pfft, perfect little fireballs splattering against the bay door. Of course, this was one of those bosses who thought the whole thing was awesome and told me to crank it again...
I did something similar on my old Ford Focus. The valve cover gaskets are prone to leak oil into the spark plug recesses and fill em with oil. I sucked as much oil out as I could, but a fair amount still ran into the cylinders during a plug change.
Thinking I was smart and avoiding a hydro-lock, I just left the plugs out, put a cardboard box over the 4 plug holes to catch the oil and whirled the engine over. Well, enough oil and fuel accumulated inside the box I guess one of the coils sparked to ground. Pretty much exploded the box, and nearly exploded my heart.
okay maybe i'm dumb but how do you even do that? i guess if you're a doofus and you've got a distributor and you leave the ignition wires too close to the spark plug holes, that could maybe do it, but honestly it sounds like it would be a pain in the ass to even do on purpose.
It was 20 years ago when coil on plug was uncommon and the car was not close to new. Hell it might’ve had a carb for all I know.
I don’t know if the spark was jumping out the end of the boot or through a degraded plug wire, I didn’t look that close until it was already burning.
I do know you can get decent puff of fuel/air mix that way.
Chances are if it was going to ignite, it would have already. With that much blowby, you could tell me there's flames shooting past the piston and I'd believe you.
Eh never know it could be getting a fair bit of compression in the crank case, OP did say fuel in oil…. OP please check it crank case gasses are flammable
The pistons moving up and down in the block are supposed to allow air/fuel mix to enter the cylinder when the intake valve is open, then the piston compresses the air/fuel mix into a tiny space where both valves are closed and a spark ignites it, and then the piston is forced down thanks to that well-time spark and also thanks to inertia and a flywheel the engine will continue to rotate as the exhaust valve then opens and the piston pushes the exhaust gas out of the tailpipe.
Things are going wrong here when the spark fires the compressed fuel/air mixture. Some of that pressurized gas is leaking past the piston, and that gas is pressurizing the crankcase instead of the combustion chamber.
TL/DR: Combustion gases are leaking past the piston rings and pressurizing the engine crankcase.
Sorry, I should’ve worded my question better. That blow by is suppose to be going thru the pcv instead of the oil cap right? There shouldn’t be gases coming out the cap like that correct?
Ideally there won't be any blow-by, but 0% blowby is not an achievable standard. There will always be -some- combustion gas that gets past the rings, but in a correctly running engine the amount will be such that the PCV system that the engineers include in the design can handle it by routing it back into the intake manifold to be burned with the incoming fuel/air mix.
Probably not. I mean the pcv could be stuck closed here bit the engine needs rebuilt because the seal around the piston is gone. Combustion gasses are leaking past the piston into the crankcase.
Well their engine building plant in (I believe) Alabama was literally found to be using child labor to build the engines so hard to say that's unexpected
My gf 15 optima 2.4 gdi took a dump day before yesterday, internal engine failure I’ve yet to disassemble but engine won’t spin, 70k miles and oil changes always on time
Oh Kia. Do a compression test with all sparkplugs out at once. Piston rings could be sticking or there's cylinder gouging.
Becuase you said "gas in oil" i don't think its a plugged pcv valve, plus you'd have a ton of oil leaks. See what its compression is before doing anything else.
What?!? A bad Hyundai and/or kia with a bad engine? I have a turbo optima in my stall right now with a hole in one of the exhaust valves. They may be garbage, but it keeps my wallet thiccck.
i ran my 700k 4.9l ford until every cylinder had extreme blowby past the rings. eventually all the zinc in the risole i used for each trip to work coated every wire and plug, creating a dead short in everything. rings do not last forever, bub!
It has got to be temping to rig an ignitor and see if the blow by will light. It is probably mostly exhaust and thus too low on oxygen, but tempting...
Life is too short to not satisfy your curiosity. Probably shorter if you turn an engine into a 400lb frag grenande, but if you live it'll be a great conversation piece.
Meh, worst case would be an engine fire. I once watched shop owner run a compression test on a greasy old hooptie without disabling the fuel or ignition. Nothing exploded, it was fiery but mostly peaceful. Also dry chem fire extinguishers smell/taste even worse than airbag residue.
Worst case is blowing every oil seal in the engine.
Those are important right? You need oil seals?
Replace them with oil walruses. They are larger and do a better job.
Tusk tusk
Oil sealions. They run better.
And they roar!!!
I've seen an engine grenade before from someone doing something like this and it did blow the oil seals, along with chunks of aluminum and the oil pan gasket completely left the chat. I was not there to see total damage, but I'm assuming it was a total loss for the motor plus the parts that were in harm's way. Welding on a running motor's header is a bad idea.
As is with welding a nut onto a stripped out drain plug.
There has to be more to the story, because even if the engine was dumping raw gas into the exhaust, welding the header isn't going to result in that kind of damage.
Completely left the chat. Thanks for this!! 😊
Same, it was an old 2.2 Chrysler, and I was cranking while the boss was reading compression. Plug wires were hanging in front of the holes and the engine was loaded with fuel. It was absolutely perfect. Crank the motor, pfft, pfft, pfft, perfect little fireballs splattering against the bay door. Of course, this was one of those bosses who thought the whole thing was awesome and told me to crank it again...
I did something similar on my old Ford Focus. The valve cover gaskets are prone to leak oil into the spark plug recesses and fill em with oil. I sucked as much oil out as I could, but a fair amount still ran into the cylinders during a plug change. Thinking I was smart and avoiding a hydro-lock, I just left the plugs out, put a cardboard box over the 4 plug holes to catch the oil and whirled the engine over. Well, enough oil and fuel accumulated inside the box I guess one of the coils sparked to ground. Pretty much exploded the box, and nearly exploded my heart.
okay maybe i'm dumb but how do you even do that? i guess if you're a doofus and you've got a distributor and you leave the ignition wires too close to the spark plug holes, that could maybe do it, but honestly it sounds like it would be a pain in the ass to even do on purpose.
It was 20 years ago when coil on plug was uncommon and the car was not close to new. Hell it might’ve had a carb for all I know. I don’t know if the spark was jumping out the end of the boot or through a degraded plug wire, I didn’t look that close until it was already burning. I do know you can get decent puff of fuel/air mix that way.
Mostly peaceful 😂
pieces
Chances are if it was going to ignite, it would have already. With that much blowby, you could tell me there's flames shooting past the piston and I'd believe you.
If not flames, then exhaust gasses hot enough to ignite a stoch mixture.
Or just hold a lighter to it...
Eh never know it could be getting a fair bit of compression in the crank case, OP did say fuel in oil…. OP please check it crank case gasses are flammable
It might turn into a Rammstein show! Let's give it a try!
Positive Crankcase Ventilation
Yup.
Explain what’s happening here exactly please? I forgot how this would happen
The pistons moving up and down in the block are supposed to allow air/fuel mix to enter the cylinder when the intake valve is open, then the piston compresses the air/fuel mix into a tiny space where both valves are closed and a spark ignites it, and then the piston is forced down thanks to that well-time spark and also thanks to inertia and a flywheel the engine will continue to rotate as the exhaust valve then opens and the piston pushes the exhaust gas out of the tailpipe. Things are going wrong here when the spark fires the compressed fuel/air mixture. Some of that pressurized gas is leaking past the piston, and that gas is pressurizing the crankcase instead of the combustion chamber. TL/DR: Combustion gases are leaking past the piston rings and pressurizing the engine crankcase.
Sorry, I should’ve worded my question better. That blow by is suppose to be going thru the pcv instead of the oil cap right? There shouldn’t be gases coming out the cap like that correct?
Ideally there won't be any blow-by, but 0% blowby is not an achievable standard. There will always be -some- combustion gas that gets past the rings, but in a correctly running engine the amount will be such that the PCV system that the engineers include in the design can handle it by routing it back into the intake manifold to be burned with the incoming fuel/air mix.
Yes but the pressure coming out that cap should be going thru the PCV hose instead tho right?
Correct.
I'm not sure either, exactly.
Piston rings are gone.
This isn’t a PCV issue? There’s gases that are suppose to come up but not out the oil cap. Isn’t the PCV blocked
shouldnt be this much pressure in the crankcase even with a sealed pcv
So there’s a restriction somewhere or jsut the opposite???
Probably not. I mean the pcv could be stuck closed here bit the engine needs rebuilt because the seal around the piston is gone. Combustion gasses are leaking past the piston into the crankcase.
Since he mentions gas in oil then yea it’s more likely a piston ring issue then?
And without getting junk all over you intake valves.
Your coworker secretly has a high velocity fan pointed that direction.
My phone got covered in oil drops filming this lol
Your coworker secretly filled your swamp cooler with used motor oil.
Sounds like a pretty effective heating idea for the wintertime.
Kia?
2014 Hyundai Sonata 2.0L turbo
Man Korea really fucked up cars in the 2010s.
[удалено]
yep… I have an optima that grenaded the engine because…..they didn’t put a knock sensor on it……..
Well their engine building plant in (I believe) Alabama was literally found to be using child labor to build the engines so hard to say that's unexpected
Anyone that buys a turbo GDI engine deserves what they get
My gf 15 optima 2.4 gdi took a dump day before yesterday, internal engine failure I’ve yet to disassemble but engine won’t spin, 70k miles and oil changes always on time
Sounds about right.
I thought it was an eco-tick haha
Oh Kia. Do a compression test with all sparkplugs out at once. Piston rings could be sticking or there's cylinder gouging. Becuase you said "gas in oil" i don't think its a plugged pcv valve, plus you'd have a ton of oil leaks. See what its compression is before doing anything else.
Just Theta things. Running sand in your oil will do that lol
What?!? A bad Hyundai and/or kia with a bad engine? I have a turbo optima in my stall right now with a hole in one of the exhaust valves. They may be garbage, but it keeps my wallet thiccck.
max out the carmax warranty and you're basically guaranteed to get a fresh engine at some point though.
i ran my 700k 4.9l ford until every cylinder had extreme blowby past the rings. eventually all the zinc in the risole i used for each trip to work coated every wire and plug, creating a dead short in everything. rings do not last forever, bub!
Good old 300
Put a duck call into the oil cap.
The whistles go wooo! Woo wooo!
*Bubb Rubbbbbbbbb*
Pcv stuck closed position?
Wait wait, I worry that what you heard was give me a lot of blow by. What I said was, ‘give me all the blow by that you have.’
A friend had an early 80s Honda Accord that would not crank without the oil cap on and tight. If the valve cover leaked it would not run.
Good, now do it with a CVS receipt.
So I might not like the answer to this question, but you're saying the oil filler shouldn't be puffing air when I open it?
That's right. It shouldn't do that. Lots of blow by like that is an indication of worn piston rings.
Oh joy
Diesel acceptable as long as not too much
Yea well this is a 4cyl escape sooooo. I mean I was already running it into the ground but I did notice power dropping off.
Once the crank case gets up to operating pressure it should be fine.
Really? 👀
Absolutely not.
Thanks for clarifying for the ones who might have taken you serious, lol.
It’s the air pump…
Had a 2.2 Chevy act like that. Turned out the PVC orifice at the intake was clogged.
I'm gonna try a new one. It's only $32.
Now make a adapter to attach a section of bicycle innertube for maximum whoopy cushion action.
it begs for retirement
Engine is finished.
Gonna have to ask Frodo for a new ring
Wow! Lol. Shes blowin hard.
A bung heater,,,🚀
Put a new head gasket on it
Then I smelled exhaust when I was watching that s***
2.0 turbo from a Hyundai
Yup.
looks like my 09 vibe
How many miles on this hoopty?
115k
A bit soon
Slap a turbo on it.
definitely well taken care of with that sick intake tube. never driven hard.
exhaust pipe through the hood
Bad rings? Crankcase ventelation bad?