P38A Problem with cylinder №3 and coolant fluid

Colthebrummie said:

If there was that much water in the cylinder, I'm amazed the engine didn't hydraulic. I would also go along with the explanation that it got in there when the head was being lifted.
Col

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I avoided hydraulic shock of engine because I didn't stop engine after problem detection and before I reached garage, there I disassembled engine (about 150 miles, so I had enough time to investigate problem, sometimes I had to add coolant liquid and move).

myfirstl322 said:

Is why I mentioned checking piston heights

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I checked piston heights - they all are ok (and the same)

dubbleRR said:

Did you look at oil cap for scum white goo see if water is in the oil sump..I would have said bottom end but you have to be careful on here,,,

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What do you mean as "bottom end" - crankshaft? connection rod? lowest point of piston stroke?

tomcat59alan said:

Who are you calling White scum?

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I think he meant emulsion in oil.

Bexer said:

I avoided hydraulic shock of engine because I didn't stop engine after problem detection and before I reached garage, there I disassembled engine (about 150 miles, so I had enough time to investigate problem, sometimes I had to add coolant liquid and move).

I checked piston heights - they all are ok (and the same)

What do you mean as "bottom end" - crankshaft? connection rod? lowest point of piston stroke?

I think he meant emulsion in oil.

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Alan was having a joke. Mayonnaise in rocker covers does not automatically mean there is a coolant leak. Bad engine breathing and short journey's that do not allow the engine to reach full temp for any length of time can cause that.

Bexer said:

I avoided hydraulic shock of engine because I didn't stop engine after problem detection and before I reached garage, there I disassembled engine (about 150 miles, so I had enough time to investigate problem, sometimes I had to add coolant liquid and move).

I checked piston heights - they all are ok (and the same)

What do you mean as "bottom end" - crankshaft? connection rod? lowest point of piston stroke?

I think he meant emulsion in oil.

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No, I would never have guessed.

Beer said that when he removed the cylinder head No3 cylinder was full of water and the piston was 2/3rds up. I can't see that all that water was in the cylinder when the engine was running otherwise it would surely have stopped dead. Therefore the water or most of it must have entered after the engine was turned off. So, pressure forcing water in via a crack or it got in there whilst head was being removed. My money is on a crack probably in the block if the head has been found ok after pressure test. It might be worth replacing the gasket and running the engine with No3 spark plug removed to see how much comes out. I think the prognosis is bad I'm afraid

Col

Sorry Bexer not beer. How do you turn bloody autocorrect off on an iPad. Gerry

Col

If you drove 150 miles ,and did not blow water out expansion tank under pressure id say the crack if it is a crack is before the intake valve ,but not in manifold as all pistons would get fed with water. If its been a long time thing the oil in the sump will look like chicken soup.... thats cream of chicken soup but with out the chicken bits. After exhaust valve would cause white smoke ,but clean oil .....

dubbleRR said:

If you drove 150 miles ,and did not blow water out expansion tank under pressure id say the crack if it is a crack is before the intake valve ,but not in manifold as all pistons would get fed with water. If its been a long time thing the oil in the sump will look like chicken soup.... thats cream of chicken soup but with out the chicken bits. After exhaust valve would cause white smoke ,but clean oil .....

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Yep crack in water jacket around number 3 inlet tract.

I have some emulsion in oil - it's impossible to have water in combustion area without emulsion in oil

Unfortunately it's to hard to make a pressure test of intake manifold - simplest way is to reassemble engine with new manifold. Also block and head passed pressure test, so there is no more variants of crack location

What temperature do they test block and heads?

myfirstl322 said:

What temperature do they test block and heads?

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With heating, so it was correct test - expansion of metal was taken into account.

Other question - how to pull off ram pipes from manifold?

Bexer said:

With heating, so it was correct test - expansion of metal was taken into account.

Other question - how to pull off ram pipes from manifold?

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Oh I dunno, grunt loudly and do your back in?

Now I can say exactly, what the problem was with intake manifold - I reassembled engine with new manifold and now engine works normal. I already rode about 100 miles - all is well.