1999 Buick Century

Tiny
JOHNSCASS
  • MEMBER
  • 1999 BUICK CENTURY
1999 Buick Century

the belt is new the water pump is new so is the thermostat there is no leakage although my radiator fins have been damaged and I havent changed the radiator cap
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Sunday, July 19th, 2009 AT 6:31 PM

7 Replies

Tiny
BUDDYCRAIGG
  • EXPERT
You didn't say what the problem is.
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Sunday, July 19th, 2009 AT 8:16 PM
Tiny
JOHNSCASS
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Thermostat replaced, waterpump. Serpentine belt, and the car still overheating some damage to radiator fins?
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Monday, July 20th, 2009 AT 10:01 PM
Tiny
BUDDYCRAIGG
  • EXPERT
Does the cooling fan ever come on?
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Monday, July 20th, 2009 AT 10:15 PM
Tiny
JOHNSCASS
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The fans come on once its way too hot and now theres a milky substance on my dipstick
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Tuesday, July 21st, 2009 AT 7:49 PM
Tiny
BUDDYCRAIGG
  • EXPERT
Does it look like a chocolate milk shake?
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Tuesday, July 21st, 2009 AT 7:54 PM
Tiny
JOHNSCASS
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Looks like a chocolate milkshake on the dipstick and where you pour the oil
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Wednesday, July 22nd, 2009 AT 10:22 AM
Tiny
BUDDYCRAIGG
  • EXPERT
Ok, you have coolant mixed in with your oil.
Do not start the engine again.

Now you still have a slim possibility of saving your engine. (If it isn't already destroyed).
But you must move quickly, to keep rust from developing inside the engine.

Go to the parts store and buy 3 cheap oil filters, and 1 high quality one.
Get enough cheap oil to do an oil change, and then get enough high quality oil to do it again.
Get 3 gallons of diesel fuel.

Get ready, set, go.
Step 1.
Drain your coolant system.
Drain your oil.
Remove your oil filter
Remove your spark plugs
Remove the fuse that powers the ignition coil (or coils)
If you have a electric fuel pump, remove that fuse too.

Step 2.
Put your oil drain plug back in the pan
Put on one of the cheap filters.
Fill the engine with the diesel fuel NOT IN THE SPARK PLUG HOLES.
Put it in the same place you would normally put in the oil.
About 1 1/2 gallons.

Step 3.
Turn the key to the CRANK position and hold it there for 30 seconds.
Stop and wait 5 minutes.
Again, crank the engine over using the key for 30 seconds.
And wait 5 minutes.
Again, crank the engine over using the key for 30 seconds.
Drain the diesel fuel
Remove the oil filter.

Step 4.
Put your oil drain plug back in the pan
Put on one of the cheap filters.
Fill the engine with the diesel fuel NOT IN THE SPARK PLUG HOLES.
Put it in the same place you would normally put in the oil.
About 1 1/2 gallons.

Step 5.
Turn the key to the CRANK position and hold it there for 30 seconds.
Stop and wait 5 minutes.
Again, crank the engine over using the key for 30 seconds.
And wait 5 minutes.
Again, crank the engine over using the key for 30 seconds.
Now wait at least 1 hour.
Put your spark plugs back in.
Put the fuses back in.
Drain the diesel fuel
Remove the oil filter.

Step 6.
Put your oil drain plug back in the pan
Put on the last cheap filter.
Fill the engine with the cheap oil.
Start engine and let idle for 30 seconds.
IDLE ONLY.

Step 7.
Drain oil.
Remove oil filter

Step 8.
Put your oil drain plug back in the pan
Put on the expensive filter.
Fill the engine with the expensive oil.
Start engine and let idle for 30 seconds.
Don't run the engine very long, remember it doesn't have coolant in it.

Now you can blip the throttle a few times to see what it sounds like.
Hopefully, you will not be listening to any bad sounds coming from the engine.

Step 9.
Now you have to find where the coolant leak was and repair it.
Your 3.1 is known for the intake manifold gaskets failing.
GM has an "upgraded" set that comes with new bolts for about $70.

Good luck
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Wednesday, July 22nd, 2009 AT 11:38 AM

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