Ahhhh. Coolant in oil.
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Joined: Nov 2001
Posts: 270
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From: Downingtown, PA
Car: 84 Trans Am
Engine: 350
Transmission: T5
Axle/Gears: 3.42
Ahhhh. Coolant in oil.
I know this have been gone over many times. Just looking for opinions.
Fresh motor .020. I have run it a few times, and up and down the street once. I put a new exhaust in today. The exhaust was previously used and I noticed the there was some water dripping out. Also my old exhaust would spew some water out of one pipe, no smoke. After I got the exhaust on, I fired it up to see how it sounded, noticed that there was some white smoke coming out of one tailpipe. I figured it was just burning off condensation. I jokingly said to my buddy who was there, "**** I hope its not burning coolant". Pulled the dipstick sure enough milky green oil.
Pressure tested the system found out my radiator has a pinhole leak.
Couldn't find a visible leak around the intake, but did notice some moisture around the intake gasket. Pulled the intake, oil has a good amount of coolant in it. Gaskets looked good for the most part. There may have been a small leak around the one water jacket, but hard to tell. I had felpro 1255's on there.
My plan is to just try new intake gaskets, Felpro ms901312. Should I be worried about head gasket, or a cracked head/block. Like I said earlier this is a fresh build. Oil was good and clear last week when I did a valve adjustment, Maybe has 20 mins run time and 5-6 starts since then.
Fresh motor .020. I have run it a few times, and up and down the street once. I put a new exhaust in today. The exhaust was previously used and I noticed the there was some water dripping out. Also my old exhaust would spew some water out of one pipe, no smoke. After I got the exhaust on, I fired it up to see how it sounded, noticed that there was some white smoke coming out of one tailpipe. I figured it was just burning off condensation. I jokingly said to my buddy who was there, "**** I hope its not burning coolant". Pulled the dipstick sure enough milky green oil.
Pressure tested the system found out my radiator has a pinhole leak.
Couldn't find a visible leak around the intake, but did notice some moisture around the intake gasket. Pulled the intake, oil has a good amount of coolant in it. Gaskets looked good for the most part. There may have been a small leak around the one water jacket, but hard to tell. I had felpro 1255's on there.My plan is to just try new intake gaskets, Felpro ms901312. Should I be worried about head gasket, or a cracked head/block. Like I said earlier this is a fresh build. Oil was good and clear last week when I did a valve adjustment, Maybe has 20 mins run time and 5-6 starts since then.
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From: Mount Carroll, IL
Car: 1992 firebird
Engine: SBC 350
Transmission: TH350
Re: Ahhhh. Coolant in oil.
intake gasket would be a good place to start. Drain your oil ASAP hard to tell if it damaged the bearings yet or not. And they do make a block tester kit that tests for exhaust gases in the coolant so you know if its head gasket/crack or intake.
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Re: Ahhhh. Coolant in oil.
Joined: Dec 2005
Posts: 6,499
Likes: 31
From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Re: Ahhhh. Coolant in oil.
Check your spark plugs. See if you have one or two plugs that look a lot cleaner than the others. If you have a crack in a cylinder or chamber it will be steam cleaning that spark plug as it runs. If you find some suspicious plugs, I'd pull that cylinder head off and see what you can find.
I am thinking you've got a crack in a cylinder wall or head or you've got a head gasket that's not sealing. The plugs will tell you where the problem is in the engine.
I am thinking you've got a crack in a cylinder wall or head or you've got a head gasket that's not sealing. The plugs will tell you where the problem is in the engine.
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