[ZR1] White smoke at high speed
11-05-2010, 06:53 PM
#21
Le Mans Master
No. It is a different system altogether. The two coolants don't cross over. You can argue about it all you want, but it won't change the fact.
If you're down 1" in the engine coolant reservoir than that is your problem. I assume you're comparing it to a previous level at the same temperature. The level changes depending on the temperature of the engine. At this point I would let the GM guys take a look at it.
If you're down 1" in the engine coolant reservoir than that is your problem. I assume you're comparing it to a previous level at the same temperature. The level changes depending on the temperature of the engine. At this point I would let the GM guys take a look at it.
11-05-2010, 07:37 PM
#22
Burning Brakes
Member Since: Jul 2006
Location: MD (or Ft Benning GA)
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No. It is a different system altogether. The two coolants don't cross over. You can argue about it all you want, but it won't change the fact.
If you're down 1" in the engine coolant reservoir than that is your problem. I assume you're comparing it to a previous level at the same temperature. The level changes depending on the temperature of the engine. At this point I would let the GM guys take a look at it.
If you're down 1" in the engine coolant reservoir than that is your problem. I assume you're comparing it to a previous level at the same temperature. The level changes depending on the temperature of the engine. At this point I would let the GM guys take a look at it.
In a couple of my older cars I had head gaskets trickle coolant into the cylinders before. There is not enough of it to turn the oil milky, but there is enough to create the smoke under hard acceleration. As far as the intercooler, the only way the coolant from the system could get into the engine is if the “bricks” were leaking from a crack or something. Best to let GM take a look. Let us know how it turns out.
11-24-2010, 10:37 AM
#23
Pro
Thread Starter
I was doing some testing yesterday at an airport a few of us rented and noticed in the rear mirror a large cloud of white smoke at 140 mph in sixth gear. So i tried it again and at about 100 the smoke starts. I did some other tests and then tried it in forth gear and got no smoke. Anyone got an idea what the hecks going on? My tips definitely had some water coming out. Drove home 50 miles with no smoke and tips were totally dry?
Thanks
Thanks
11-24-2010, 12:26 PM
#24
Instructor
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GM had a look at my problem it appears there's a bulletin out the main bearing tend to loosen while being spiritedly driven :>) They replace all the bolts, increased the TQ and changed the thigten sequence. I've only had it back 1 day but no more smoke and no oil on the floor this morning.
could you share some info on that bulletin
11-24-2010, 12:55 PM
#25
Pro
Thread Starter
11-24-2010, 02:45 PM
#26
Le Mans Master
I'm not clear on this. The main bearings were loose and you were loosing coolant?
11-24-2010, 05:22 PM
#29
Pro
Thread Starter
11-24-2010, 11:24 PM
#31
Le Mans Master
Perhaps the rings did not seal properly with the "loose" main bearings at max power?
11-25-2010, 08:40 AM
#33
Le Mans Master
Metraman,
I understood the main bearing was loose. The unexplained mistery is why would that cause the oil leak into the combustion chamber under heavy load? Rings?
I understood the main bearing was loose. The unexplained mistery is why would that cause the oil leak into the combustion chamber under heavy load? Rings?
11-25-2010, 12:09 PM
#34
Pro
Thread Starter
There are 10 bolts on the side of the block with seals under their heads. They loosen and the OIL runs out around them down the block to the exhaust and SMOKES. Nothing to do with the rings.
11-25-2010, 02:58 PM
#35
Le Mans Master
Now I understand. An external oil leak. We all were thinking an internal leak. Thanks for clarifying it.
10-26-2021, 11:06 AM
#36
GM had a look at my problem it appears there's a bulletin out the main bearing tend to loosen while being spiritedly driven :>
They replace all the bolts, increased the TQ and changed the thigten sequence. I've only had it back 1 day but no more smoke and no oil on the floor this morning.
They replace all the bolts, increased the TQ and changed the thigten sequence. I've only had it back 1 day but no more smoke and no oil on the floor this morning.
10-29-2021, 11:27 AM
#37
Vettegirl, I'd keep looking if I were you. That's a sick engine. 
Don't buy someone else's headache. 
Don't buy someone else's headache.
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10-29-2021, 11:32 AM
#38
