ZR-1 Net Registry Forums - View Single Post - Possible Leak

Paul Workman · 08-27-2013

Coolant "smoke" is actually steam, "white fog" and you may, depending on one's olfactory acuity, detect the smell of antifreeze...but not always.

I had a leak on the afore mentioned exhaust manifold bolt; same side too, as it happens. And, I believe too that the FSM is where I read to use some RED (aka high-temp) RTV on the threads and re-seat the bolt. (It fixed my leak!)

If you see blue-ish smoke, it is oil. And, if blue, and smells like burning oil...likely it is.

If you turn the engine off, after it gets hot enough to cause the smoking, and the smoke continues to rise from the 4-6 cylinder area, well that is directly above the afore mentioned header bolt.

FWIW,

P.

08-27-2013	#5
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,466	Re: Possible Leak - Engine Smoking Coolant "smoke" is actually steam, "white fog" and you may, depending on one's olfactory acuity, detect the smell of antifreeze...but not always. I had a leak on the afore mentioned exhaust manifold bolt; same side too, as it happens. And, I believe too that the FSM is where I read to use some RED (aka high-temp) RTV on the threads and re-seat the bolt. (It fixed my leak!) If you see blue-ish smoke, it is oil. And, if blue, and smells like burning oil...likely it is. If you turn the engine off, after it gets hot enough to cause the smoking, and the smoke continues to rise from the 4-6 cylinder area, well that is directly above the afore mentioned header bolt. FWIW, P. Last edited by Paul Workman; 08-27-2013 at 05:55 PM.