924Board.org

[Jakkq]

I took the car out the other day and after about 5 minutes or so, I notice the Temperature Gauge begin to rise. I returned home and noticed the Engine was certainly overheating. The coolant was completely gone. I figured that since I had just re-applied the Coolant Hoses before I left that maybe a hose had slipped loose, but they were all intact. I looked under thee hood, and under the car itself to notice fresh oil!


Click the link below for a gallery of images:

http://img716.imageshack.us/g/file0409.jpg/


The first image shows coolant ooze from a decayed hose. I do not believe coolant would have slipped out since this coolant was dried and in a sticky state.

Image 4 you will notice that a large amount of fresh oil resides on the bottom of the Air Filter.

Image 5 you will notice that there is oil residing inside the Air Filter Cabin itself

Image 6 shows a little oil on the Mixture Control Plate

Image 7 shows spilt oil on the side of the Mixture Control Unit

Oil was in in the Intake Hoses, but not enough to the Intake Housing.

Image 12 and 13 show the valve where oil may have been coming from? You can see a bit of oil still sitting there on the edge of the valve opening and around the sides.
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1979 Porsche 924- Snailshell
http://porsche924workblog.blogspot.com/

[emoore924]

I think you might have two things going on, or maybe one thing that's causing two symptoms.

The missing water is a big problem. Sounds like either a sizable leak or a head gasket problem. The water went somewhere. Which leads to the oil in the intake. Might be generating pressure in the crankcase along with some moisture which is blowing oil and water into your intake through the breather and the emissions stuff.

Not enough info to make a good diag, but I'd say do a compression test and/or leakdown and see whether something shows up. And check the usual head gasket stuff -- pull the plugs and look at them. Make sure you don't have hydrolock. Is there water in the oil or oil in the water...yadda

[Jakkq]

Well I think I know where all the Coolant went. I pulled the bottom hanging hose off and it was all sitting inside the hose! It all just spilled right out after removing the hose, and I got my shirt nice and washed.
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1979 Porsche 924- Snailshell
http://porsche924workblog.blogspot.com/

[Harm]

Sounds sweet

[Jakkq]

What would cause the coolant to all sit in the hose? The Coolant Reservoir completely dried out into the hose that goes from the Radiator to under the Timing Belt.
_________________
1979 Porsche 924- Snailshell
http://porsche924workblog.blogspot.com/

[Harm]

— The 924s Cooling system capacity is about 6 liters (2.11 U.S. gallons or 1.76 Imperial gallons)
Did you get such an amount of Coolant into the engine using the correct bleeding procedure?

— Has the water pump ever been replaced before and is it functioning properly?
Check if the Water Pump pully that carries the V-belt shows any play to the
water pump body; That would indicate it is worn.

— Is the V-belt in good shape?

— Is your thermostat somehow blocked?

[CorsePerVita]

Oil spill? These guys can help.

http://www.youtube.com/watch?v=2AAa0gd7ClM
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- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS

[Jakkq]

Could adding the wrong oil cause an oil splurge like this to occur?
_________________
1979 Porsche 924- Snailshell
http://porsche924workblog.blogspot.com/

[fiat22turbo]

Stuck thermostat (pull it, put it in a pan of water with a thermostat, heat until thermostat opens or the thermostat reaches the temp where the thermostat is supposed to open. Replace if it fails the test)

Air stuck in the cooling system. When filling, always pull the red bleed plug at the top of the hose that comes out of the thermostat housing. Squeeze the various coolant hoses to feel whether they are full of water and to move any air bubbles around. You can also tell if any of the hoses are close to failure as they should be fairly stiff and difficult to squeeze.

Always use distilled (purified) water to fill the cooling system. Tap water will leave deposits that will plug up the cooling passages in your car and lead to electrolytic decay of the aluminum in the system. If you've had to use tap water due to a need (side of the road repair, etc) then flush the system with a garden hose (flush the heater core separately) and use a gallon of plain white vinegar in the system with a gallon of distilled water to fill it back up. Drive the car for 30 minutes or more to allow the flush to work, drain and refill with 50/50 distilled water and antifreeze. You'll likely need to flush and fill again in a few weeks if the system is especially nasty.

As to the oil, well if you've blown the headgasket, then the oil and water would likely mix and you'd see a "chocolate-milk" like slurry in the cooling system or the oil pan. Fresh oil in the intake could be an issue with the crankcase vent getting pressurized by either combustion gases bypassing the piston rings or the vent is not open and the system is pressurizing itself and pumping the oil out.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

[Jakkq]

from what I notice, the oil is spilling out the side of the Cylinder Head Cover. There IS a bolt missing. I believe 17A from the parts catalog of 1976-1979, page 23.

I had not noticed this before the Oil Spill occurred. After doing a bunch of stuff on the car, I fired it up, and it went after a bit, but then realized that pretty much all the oil spilled out, and it was dripping from the side of the Camshaft Cover (Valve Cover). It seems very tight, and all the bolts that hold the top seem to be in place. Could this one lost stud bolt cause the cover to loosen up that much for it to leak so much oil?

By the way, I tested the Water Pump and Thermostat which both work fine.

Edit: Took all the nuts off of the Cover and took it off. It appears as though PO or some shop used a type of glue that settles to an Orange rubber, in place of the top two half circle gaskets. That molding glue seemed to have been stripping apart. The bottom Gaskets for under the Cover were also broken in several places. I ordered some new gaskets, so I'm hoping these are why oil was pouring from the cover. I'll also be sure to tighten the cover down much better this time.

Once this is done, I'll see if oil is still spilling out, and if it is getting to the Intake again.
_________________
1979 Porsche 924- Snailshell
http://porsche924workblog.blogspot.com/