Ford Racing 427 burning oil

mreid · #1 (**permalink**) 12-01-2011, 11:04 PM

I have that same engine, but only just started it a few weeks ago. Mine doesn't do that, but it will burn a little oil until the rings set. Yours sounds excessive. Assuming it is not getting past the rings (at least not that much), sounds like it is coming through the intake. Can you pull the carb and take a look in the manifold? Those giant runners will make it easier!

68pony · #2 (**permalink**) 12-01-2011, 11:34 PM

Thats what my mechanic is going to do, i wasn't sure if that would work, would he be able to see by looking down the runners if it is leaking from the inlet manifold? link below at start up if you look close you will see smoke coming from the tips
cheers chris ps thanks for quick reply, i'm pretty upset over this

68 Mustang 427 motor start up - YouTube

blykins · #3 (**permalink**) 12-02-2011, 04:28 AM

Very hard to see on the video (for me anyway), but the smoke looked black, which would be a rich condition. Oil smoke is usually blue or a bluish white. Sometimes a sooty tailpipe mixed with condensation will look like oil as well.

Based on your description, I would have your mechanic check out the valve seals and intake manifold gaskets just to be safe. I wasn't aware that these engines came from Ford with intakes installed. Did your mechanic install it?

Engines will need a little break-in time if they haven't been dyno'd.

68pony · #4 (**permalink**) 12-02-2011, 05:24 AM

Forgot to mention yes my mechanic did fit the intake manifold, its definatly oil you can smell it and its blue, hard to tell in vid,also half a quart in 300 miles i think is excessive, i'm going to ask him to do a leak down test, i have had no luck my previous motor was a 408w which did not last long due to a poor rebuild so this time i thought i would go crate and now this, i'm gutted