Thread: 428 smokes ... #1 Cylinder only

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I thought I had it handled too, BUT.....changed the manifold gaskets and it still smokes.

It doesn't smoke when cold, but begins after running a few minutes. Gets worse as the engine heats up (oil getting thinner?)

All spark plugs other than #1 look perfect. #1 looks "oily".

Another Compression test (of all 8 cylinders) showed pressures between 195 and 205.

When changing the gasket, the original didn't seem sealed around the #1 intake port. There was oil on the cylinder head around teh port and inside the gasket opening for the port. Looking back up the intake manifold, #1 seemed a bit wet. Underside inspection did not reveal any cracks in the intake manifold.

Besides shortening the manifold bolts to the proper length, I also did away with the manifold end seals and just used silicon instead.....just in case the cork was too think and the manifold wasn't droppiong down completely.

So......because it seems to get worse as the engine wearms up, I do not think there is a mechanical problem. Besides, the CR is fine. So I get back to gasket issues. Guess I'll have to get manifold/head angles checked and check the head gasket (would be one crazy leaking head gasket to leak oil into #1 cylinder.....just miles of cast iron between cylinder and any source of oil....not like a water leak).

Anyway.....all that work so far, and no improvement.....sigh............

Eventually I'll fix it, but it may become a winter project....

I still feel that with the white/gray smoke that you have more of a chance of a water leak. If you can find a radiator pressure checker - not sure if they make a garage size any longer - put it in place, pump it up and keep an eye on it - also pull plug #1. Here's one on eBay; http://cgi.ebay.com/ebaymotors/MAC-T...mZ250277411365

A compression check wont always find a water leak.

Another check to make is a compression "leak down test". Here's a description of an inexpensive test method: http://www.geocities.com/dsmgrrrl/FAQs/leakdown.htm or here http://www.wcengineering.com/articles/leakdown.html