[Vwdiesel] Smoky, Bubbly Engine?
lbaird119 at aol.com
lbaird119 at aol.com
Sun Nov 1 18:38:26 PST 2009
The bubbles are mostly likely a blown head gasket or possibly a cracked
head but that's not terribly common.
?Odds are the smoke smell and wanting to run is worn rings or valve?guides
or seals.? It IS possible that it has just sat a long time with some reallly
bad, old oil is causing excessive burning, a stuck ring or two and so on.
Blowby is generally a little excessive looking, especially compared to a
gasser and does lessen quite a bit as you rev the engine.? The fact that
the blowby is lessening as you rev it, makes me wonder if your dipstick
is blowing out or just vibrating out?
? The low hole could be a bad ring or valve but is more likely a stuck ring.
A good oil change and warming it up really well just might help most of
your problems.? Not the bubbles though.
From: Will Taygan <william at taygan.com>
To: vwdiesel <vwdiesel at audifans.com>
Sent: Sun, Nov 1, 2009 5:13 pm
Subject: [Vwdiesel] Smoky, Bubbly Engine?
I picked up a 1990 Jetta 1.6NA diesel for $400 last spring, and finally got around to checking it out today (too much time spent reviving the 1982 1.6NA Westfalia.) The engine has a junkyard marks, and a vanagon intake manifold. Really smoky exhaust, smells like oil. Obvious bubbles coming out of the coolant expansion tank. Engine sounds like it wants to run away. Plenty of blowby from the valve cover, blows less when it revs (why is this??) Blowby is pushing up the dipstick and inch or so when engine revs. Pulled the injectors, #1 and #2 were sopping wet with black crankcase oil (not diesel). #3 and #4 look good. All glow plugs work, it drives and starts well (in the teens today). Compression was 405, 350, 390, 285, starting with #1 (the oily one by the timing belt). I don't really want to pull the head now, since it's gotten cold and I don't have a garage. I'm just trying to get a "best guess" as to what's going on. Could is be "just" a head gasket? That I could deal with. Or, more likely a full rebuild (probably salvage the head and tranny, but bail on the block. Thanks for your ideas. Will in Alaska. _______________________________________________ Vwdiesel mailing list Vwdiesel at vwfans.com http://www.audifans.com/mailman/listinfo/vwdiesel
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