Topic: Gasoline In Oil
in Forum: C4 General Discussion
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Vette(s): Black 1979 L-82
Black 1996 LT1
Black 1999 Coupe
A fully rebuilt motor with less than3k miles.New tranny
New Bosch III injectors from FIC...probably 500 miles.
Problem...car was not driven for 2 years with a full tank of fuel...though it did have stabil in it.
Last week:
Since I have other cars I let my son drive it....when he got to 1/2 a tank, he put fresh UNLEADED NO ETHANOL fuel in it and went home.
Next morning he drives four miles to work...notices white smoke out the exhaust when he parks, and the smoke smells like gasoline.
Calls and lets me know.
He tries to leave that night after work and the car will NOT turn over....like the engine is seized. not like a dead battery....like it is seized.
The roll-back brings it to my house.
I drop the oil and it has gasoline in it.
what caused this?
I am thinking of pulling the plugs, putting fresh oil, priming oil galleries and see if I can un-seize it using a breaker-bar at the crank-shaft.
Besides burning it to the ground, what else?
Car in question is a 96, bored and splayed LT1 as seen above.
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I'm not authority so being noone else has responded take this with a grain of salt.
I suspect your engine may be hydrolocked. Pull the plugs and see if it will turn over now, I suspect it could. If it does and you get gas out of one or more cylinders, I'd suspect you have one or more injectors stuck or staying open. I think it could be an injector or the electrical connections issue.
Just a suspicion on my part.
Good luck
Paul
Be VERY cautious of hitting the starter on an engine you suspect may have cylinders full of liquid gasoline with the plugs removed. If there IS liquid, it may spray out with force, and be ignited by the loose plug wires. Could ruin your day. And your car and garage.
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davep85c4 said: Be VERY cautious of hitting the starter on an engine you suspect may have cylinders full of liquid gasoline with the plugs removed. If there IS liquid, it may spray out with force, and be ignited by the loose plug wires. Could ruin your day. And your car and garage.
My idea is below:
"I am thinking of pulling the plugs, putting fresh oil, priming oil galleries and see if I can un-seize it using a breaker-bar at the crank-shaft."
"I'd suspect you have one or more injectors stuck or staying open. I think it could be an injector or the electrical connections issue"
Thanks Paul....this is the direction I am looking too....just gotta figure what gives.
If I'm right, you won't need a breaker bar once you pull the plugs to break it loose. If one or more cylinders is full of or has a bunch of gas in it, that's what is preventing the engine from turning over (the engine can't compress a lot of raw gas without bending rods etc). Once the plugs are out it should turn over just fine (if it's a hydrolock issue) and spit out a lot of that gas that's preventing the engine from turning over. Just be careful so you don't get a spark or flame near it or you could have worse problems. If the issue is gas in the cylinders, get out what you can turning the engine over then leave the plugs out for the last to evaporate unless someone has a good alternate way to get it out
Pull the coil wire or whatever to prevent the engine from generating a spark to reduce the chance of a fire. Have a big bucket of water or a fire extinguisher on hand and preferable do not do it inside a building.
Just thoughts
Paul
|UPDATED|4/20/2014 4:37:28 AM (AZT)|/UPDATED|
davep85c4 said: Put a socket and ratchet on the alternator pulley nut. With the plugs removed, it will turn over easily with this method.
Alternator or the harmonic dampener? I would expect the dampener nut to turn the motor over.
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Black 1996 LT1
Black 1999 Coupe
Plugs out and hydolock relieved of pressure by turning crankshaft with a breaker bar.
Ok...that's done and no fires were started from anything.
So...why and what caused this?....c'mon people I need your brain power again.
This is speaking on the raw fuel filling a cylinder.
hcbph said:
Alternator or the harmonic dampener? I would expect the dampener nut to turn the motor over.
davep85c4 said: Put a socket and ratchet on the alternator pulley nut. With the plugs removed, it will turn over easily with this method.
Alternator or the harmonic dampener? I would expect the dampener nut to turn the motor over.
Ever worked on a C4? I have. Lots of them. The balancer is right up against the "wonder bar" and there is very limited clearance to get a bar or socket on the balancer bolt. The fan motor is in close proximity, and it's a long reach. I don't like to scratch or damage anything when working on cars. Using the balancer bolt to turn the engine over in a C4 is a PITA, any you're likely to scratch something.
I suggested the alternator because it is very accessible, and offers a 4:1 ratio on the crank which makes it very easy to turn the engine over with the plugs removed.
It was not a mis-guided suggestion. It was made by someone who has been working on C4's regularly for 30 years.
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davep85c4 said:
Ever worked on a C4? I have. Lots of them. The balancer is right up against the "wonder bar" and there is very limited clearance to get a bar or socket on the balancer bolt. The fan motor is in close proximity, and it's a long reach. I don't like to scratch or damage anything when working on cars. Using the balancer bolt to turn the engine over in a C4 is a PITA, any you're likely to scratch something.
I suggested the alternator because it is very accessible, and offers a 4:1 ratio on the crank which makes it very easy to turn the engine over with the plugs removed.
It was not a mis-guided suggestion. It was made by someone who has been working on C4's regularly for 30 years.
hcbph said:
Alternator or the harmonic dampener? I would expect the dampener nut to turn the motor over.
davep85c4 said: Put a socket and ratchet on the alternator pulley nut. With the plugs removed, it will turn over easily with this method.
Alternator or the harmonic dampener? I would expect the dampener nut to turn the motor over.
Ever worked on a C4? I have. Lots of them. The balancer is right up against the "wonder bar" and there is very limited clearance to get a bar or socket on the balancer bolt. The fan motor is in close proximity, and it's a long reach. I don't like to scratch or damage anything when working on cars. Using the balancer bolt to turn the engine over in a C4 is a PITA, any you're likely to scratch something.
I suggested the alternator because it is very accessible, and offers a 4:1 ratio on the crank which makes it very easy to turn the engine over with the plugs removed.
It was not a mis-guided suggestion. It was made by someone who has been working on C4's regularly for 30 years.
Very very limited room...since the pressure was relieved it turned easily.
I was not going to connect the battery and have any chance
of a large explosion....was plenty of fumes.
...got any idea on the "why" this happened...I haven't pulled the injectors out yet or checked rail pressure, was just too much fumes and raw fuel.I am letting things air out/dry out now.in Forum: C4 General Discussion
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