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Registered
Join Date: Jun 2010
Location: Minneapolis, MN
Posts: 149
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Still milkshake color after HG change
I changed the gasket and finally got it all put back together. I ran the car for 4 minutes (after putting new oil and coolant in) and there's still a milkshake on the dip stick. Could this be because all the coolant didn't all come out when I drained the pan (wishful thinking)? Is there a way to tell if its the AOS or oil cooler seal? What else could it possibly be, could I have not sealed the gasket well enough?
The vacuum line diagram on clarks doesn't seem to match whats in my car. I was wondering if someone had pictures of their entire vacuum line put together. The car runs a little rough but not poorly. |
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08-20-2011, 10:34 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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When you changed the HG head gasket, did you change the oil cooler seals as we mentioned?
Post 2 & 3 & others... http://forums.pelicanparts.com/porsche-924-944-968-technical-forum/623184-brown-ooze-inside-cylinder-head.html John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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08-21-2011, 05:59 AM
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Registered
Join Date: Jun 2010
Location: Minneapolis, MN
Posts: 149
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No I didn't because there was no oil in the coolant reservoir and there was a large hole in the HG so I assumed that would solve it all.
Is it possible that there's just a lot of coolant left in the system. I drained the oil through the oil plug so I'm guessing that didn't completely drain the crank case. I left the car running for 4 minutes and there's still white smoke. It runs a lot smoother and doesn't die during idle anymore. It seems like there's less milkshake, doesn't seem to be loosing any coolant, but there seems to be smoke coming out of the passenger side of the engine bay. I'm not sure if its something leaking or if its left over WD-40/acetone/PB-Blaster on the exhaust manifolds. The smoke didn't start until the engine seemed to be hotter and continued after the engine was shut off. My biggest problem is that the temp gauge doesn't seem to be working so I don't want to run the car until I know it is at least a possibility that it's just left over coolant. Last edited by bp944; 08-21-2011 at 06:39 PM.. |
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08-21-2011, 11:44 AM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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bp944,
It could be residual. The oil/ coolant burn off on the exhaust pipes and engine block is normal for a few minutes. The old oil(coolant) mix should have been drained with the engine at normal operating temperatures-hot. Filter removed. This is to get as much of the mixture suspended and free to drain. This is done before the HG removal. Another oil/filter change when hot may remove more residual. If the engine was cold, it is possible the oil pan and passages have some of the contaminated mix. If you wanted to be certain to get as much out, you could put in SeaFoam--follow the can instructions-in the crankcase for a few minutes before you drain the oil and change the filter. Your decision as this is another debated topic ----to use or not use a flush. Hopefully you just have residual. GL John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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08-22-2011, 05:38 AM
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Registered
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Location: Minneapolis, MN
Posts: 149
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Just to get it straight. I should let the engine run for 2-3 minutes. Drain the oil, change the oil filter, use some seafoam (i'm sure there's plenty of 23 year old build up that should come out), and then fill her back up? Does it matter that I'm doing this AFTER the HG removal?
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08-22-2011, 11:08 AM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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Quote:
Start the car, let warm up to operating temperature and drive. Keep the SeaFoam in for up to +-100 miles. 25 to 50 miles should be enough to remove the contamination. The next step is to drain the oil and change the filter. Use a Mahle, K&N or OEM Porsche filter--never Fram or store brand. Tilt the drivers side of the car up a little higher to get all the oil out you can. Replace the oil drain plug and aluminum seal Put on the filter Fill up the crankcase If it looks like there is no further oil/coolant mix, change the oil/filter again in 500 miles-no SeaFoam. Just to make sure you have got all the residual out.   GL John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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08-22-2011, 01:25 PM
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Architect / Car Guy
Join Date: Jan 2009
Location: Atlanta, Ga
Posts: 699
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FYI the Porsche manual does suggest to replace the rod bearings in the event of coolant contaminating the oil.
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Looking Forward to getting my First "car" Porsche 951 |
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08-22-2011, 01:34 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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+1^
Covered this about 17 days ago.... http://forums.pelicanparts.com/porsche-924-944-968-technical-forum/623184-brown-ooze-inside-cylinder-head.html John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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08-22-2011, 03:29 PM
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Registered
Join Date: Jun 2010
Location: Minneapolis, MN
Posts: 149
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Thank you all, very much. She is now running quite prettily. I replaced the oil, put in some seafoam, and finally got the guts to drive her until the old coolant work itself out. The smoke went away, though I must have gotten a lot of oil/WD40 on the exhaust manifold because it smoked for quite awhile.
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08-23-2011, 11:02 PM
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