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whc03grady Old School!

Joined: 16 Dec 2006 Posts: 546 Location: Anaconda Montana
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Posted: Wed Jul 28, 2010 12:20 pm Post subject: oil smell on deceleration |
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Last weekend we were going to take a short trip which included about 50 miles of interstate driving, half of that uphill. Before setting off I checked the oil and it was a low--not terribly low, but low so I put some in. It was a decently hot day, high 80s maybe.
During the trip I noticed that upon deceleration from highway speeds (~70mph), like when exiting the freeway, there was a distinct oil smell. And it wasn't so much a burning smell (though there was a little of that too), but like the smell of fresh oil. This happened on every deceleration from high speed. The car ran fine. It is a 1971 Type III with intact fuel injection.
Thoughts? _________________ 1974 Westfalia "Ludwig"
1971 Squareback "Gertie"
Read about their adventures:
http://www.ludwigandgertie.com |
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midatlanticys Addicted!

Joined: 17 Jun 2009 Posts: 288 Location: Azores Portugal
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Posted: Wed Jul 28, 2010 2:36 pm Post subject: |
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hmmmm . . . the oil you had to add before taking off, is that because the motor is burning oil or leaking oil? If leaking, then it's probably getting onto a hot surface that really heats up with the lower airflow on decel - if burning, then maybe some pinholes in the heater boxes, also during the decreased airflow of decel are sending the fumes towards the front of the car and your nose! . . . jus' my 2 non-cents!
PS; nice plug for G-Eye's bus on your blog!!  _________________ "The sad thing about governments is that in every single case, government formed by the people eventually becomes so large it begins to prey upon the people who created it.” -- B. Hoover |
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whc03grady Old School!

Joined: 16 Dec 2006 Posts: 546 Location: Anaconda Montana
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Posted: Wed Jul 28, 2010 3:31 pm Post subject: |
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It has some chronic leaks and low (~100lbs) compression on #1. I figured that was my oil consumption. It's maybe 1/2 qt per 400 miles? But that's a guess.
The oil smell was definitely the smell of fresh oil. _________________ 1974 Westfalia "Ludwig"
1971 Squareback "Gertie"
Read about their adventures:
http://www.ludwigandgertie.com |
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BellePlaine Old School!

Joined: 09 Mar 2009 Posts: 872 Location: Minnesota
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Posted: Thu Jul 29, 2010 5:31 am Post subject: |
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Where is your oil level at now? Find any new leaks? Can you smell it standing behind the car at idle or decel? Oil cap on tight? Breather hose still connected? _________________ 1975 Riviera
Last edited by BellePlaine on Thu Jul 29, 2010 6:57 am; edited 1 time in total |
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whc03grady Old School!

Joined: 16 Dec 2006 Posts: 546 Location: Anaconda Montana
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Posted: Thu Jul 29, 2010 6:55 am Post subject: |
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So the wife took Gertrude over the hump to P'burg yesterday. She says when she got back in there was a sizable ("as big as a large slice of pizza"--women: you gotta love 'em) oil spot under the passenger side, and that she could see it dripping. Not running, but dripping. I thought this was the end so I told her to dump the rest of the on-hand oil in it, about 1/4 quart and just drive back home. She did, and reported no problems on the return. There was a dime-sized drop where she parked it at home, and no new drops at all overnight. I checked the oil and now of course it's a little overfull. I'm going to change the oil anyway this weekend, but there you are.
Connections, caps, etc. are all on tight.
Is there a condition that would cause an oil leak to leak worse when the engine is nice and warm, and hardly or not at all other times? _________________ 1974 Westfalia "Ludwig"
1971 Squareback "Gertie"
Read about their adventures:
http://www.ludwigandgertie.com
Last edited by whc03grady on Thu Jul 29, 2010 8:42 am; edited 1 time in total |
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sped372 Old School!

Joined: 07 Feb 2007 Posts: 568 Location: Lodi, WI
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Posted: Thu Jul 29, 2010 7:19 am Post subject: |
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Where exactly under the passenger side? Valve cover? _________________ 1973 Super Beetle - 1600 DP - Daily Driver
1970 Campmobile - 1600 SP - Weekend Warrior
1971 Karmann Ghia - 1600 DP - Her Daily Driver |
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Amskeptic IAC "Help Desk"


Joined: 02 Apr 2006 Posts: 11564
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Posted: Thu Jul 29, 2010 7:48 am Post subject: |
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Check that the air cleaner oil level is correct and that the air cleaner is secure at the center wingnut, if ity is oily underneath, clean clean clean.
Colin _________________ BobD............. 52,009
Squareback.... 54,022 |
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fancy pants Old School!

Joined: 15 Jun 2008 Posts: 560 Location: Portland
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Posted: Thu Jul 29, 2010 11:10 am Post subject: |
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| whc03grady wrote: |
Is there a condition that would cause an oil leak to leak worse when the engine is nice and warm, and hardly or not at all other times? |
I would guess that as the oil thins out at higher temperatures, there are more places for the thinned out oil to escape. Does that make sense? _________________ John
76 Bus - Riviera (if I could just fix that idle)
73 squareback (ole reliable)
05 Golf TDI
We are not going to stick anything that dirty down in your hole - Colin, 6/30/2010 |
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whc03grady Old School!

Joined: 16 Dec 2006 Posts: 546 Location: Anaconda Montana
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Posted: Thu Jul 29, 2010 12:29 pm Post subject: |
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| fancy pants wrote: | | I would guess that as the oil thins out at higher temperatures, there are more places for the thinned out oil to escape. Does that make sense? |
That was my speculation as well. A thin criminal is going to be able to squeeze out of more jail cells than a fat one.
Also, I'm embarrassed to say, I'm still running Winter (viz., thin) oil. _________________ 1974 Westfalia "Ludwig"
1971 Squareback "Gertie"
Read about their adventures:
http://www.ludwigandgertie.com |
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