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Registered
Join Date: Dec 2002
Location: www.fakelife.com
Posts: 1,672
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White smoke from a VW Type 4??
Hey guys, I thought the PPOT Brain Trust could help out with this. My buddy Drew has a 1700cc Type 4 with hydraulic lifters and dual Dellortos carbs. Says he is seeing white smoke coming from the emulsifier tube and the barrels of the carbs, and is wondering what the heck it could be. A quick and dirty google search didn't turn up anything that seemed useful. He says it's not a lot, barely noticeable when driving, but it's a pretty new engine, so he's concerned.
Any ideas?
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I turn away with fear and horror from this lamentable sore of continuous functions without derivatives. --Charles Hermite Fakelife.com Nothing to do with archery anymore. Porsche/BMW/Ferrari/Honda videos |
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10-04-2007, 05:02 PM
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Detached Member
Join Date: May 2003
Location: southern California
Posts: 26,964
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Don't know what an emulsifier tube is, or why you'd get white "smoke" out of the barrels of the carbs, but if the carbs are water jacketed, to warm the air/fuel mixture, then a leaking intake manifold with water seeping in comes to my mind.
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Hugh |
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10-04-2007, 05:23 PM
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Hugh, thanks for the reply. I'm told the carbs aren't water-jacketed.
Also, it only happens on 1-2 and not 3-4.
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I turn away with fear and horror from this lamentable sore of continuous functions without derivatives. --Charles Hermite Fakelife.com Nothing to do with archery anymore. Porsche/BMW/Ferrari/Honda videos |
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10-04-2007, 05:36 PM
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Detached Member
Join Date: May 2003
Location: southern California
Posts: 26,964
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Head gasket between 1&2, check for emulsion in the oil, and water in the coolant. On an old car I once had, I had something similar and I put an air hose on a hose end that would screw into the sparklplug hole, applied air and got bubbles out of the radiator
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Hugh |
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10-04-2007, 05:42 PM
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Too big to fail
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Might be a stuck float, and/or running rich enough that gas is vaporising out of the intake/carb.
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"You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs |
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10-04-2007, 05:45 PM
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Registered
Join Date: Oct 1999
Posts: 8,673
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Quote:
Only thing I can think of is same as Thom's suggestion. I've seen it on my lawnmower... Last edited by tcar; 10-04-2007 at 07:27 PM.. |
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10-04-2007, 07:22 PM
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Used & Abused
Join Date: Feb 2004
Location: Sebring, FL
Posts: 924
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Might want to post it to the 914 board, same exact engine. More concentrated knowledge.
Sounds like you have some blowback pressurizing the carbs. Could be from too much ign advance, gummed valves not sealing well, improperly adjusted valve lash, etc...
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83 - 944, daily driver 62 - VW Karmann Ghia, never moving restoration "Oh Bother," said Pooh, as he chambered another round. |
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10-04-2007, 07:29 PM
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In the shop at Pelican
Join Date: Aug 2002
Location: Los Angeles, CA
Posts: 10,459
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What distributor is he running?
This sounds like an advance problem I had once. |
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10-04-2007, 08:13 PM
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