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#1
04-03-2008, 12:45 AM
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exhaust leak in 240D
Hi all,
I went to see the Spurs play last night, and on the way I hit a railroad track too hard and heard a squeaky crunchy sound (above and beyond the normal slight crunchy sound that remains an undiagnosed suspension problem). Didn't notice it last night, but today, I can see exhaust fumes in the engine compartment and smell them in the cabin. The smell is diesel, not oil - smells like an airport. I searched and found several threads related to exhaust leaks in turbos, but what should I look for/expect in the N/A? Thanks!
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 Current Mercedes 1979 maple yellow 240D 4-speed Gone and fondly remembered: 1980 orient red 240D 4-speed Gone and NOT fondly remembered: 1982 Chna Blue 300TD Other car in the stable: 2013 VW Jetta Sportwagen TDI / 6-speed MT 
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#2
04-03-2008, 01:01 AM
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If the exhaust leak is new, you should be experiencing a significant increase in NOISE. These cars are noisy already, but a leak under the hood is likely an exhaust manifold to head, or manifold to down pipe joint, leak. I don't think your vintage has an EGR line, so I think that is out of the question. Otherwise it is likely a downstream joint in the exhaust system that you need to get under the car to see. Jim
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Own: 1986 Euro 190E 2.3-16 (291,000 miles), 1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000, 1988 300E 5-speed 252,000 miles, 1983 240D 4-speed, purchased w/136,000, now with 222,000 miles. 2009 ML320CDI Bluetec, 89,000 miles Owned: 1971 220D (250,000 miles plus, sold to father-in-law), 1975 240D (245,000 miles - died of body rot), 1991 350SD (176,560 miles, weakest Benz I have owned), 1999 C230 Sport (45,400 miles), 1982 240D (321,000 miles, put to sleep)
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#3
04-03-2008, 01:08 AM
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Get the hood open and start looking for soot marks around the exhaust. Soot mark=leak.
Manifold to head and manifold to down pipe joints are most likely places.
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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress. 99 Mazda Miata 183,xxx miles.
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#4
04-03-2008, 05:14 AM
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Check the flex pipe, should have one even though it's a non turbo.
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83 SD 84 CD
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#5
04-03-2008, 10:01 AM
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Hmm, mine just has a straight downpipe....no flex pipe.
Today, I am not so sure about the leak. I don't see any soot marks, and I don't have an increase in noise. Also the smell is still there, but not as strong. Maybe I have a slight fuel leak that is hitting the block and burning. Thanks everyone!
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Current Mercedes 1979 maple yellow 240D 4-speed Gone and fondly remembered: 1980 orient red 240D 4-speed Gone and NOT fondly remembered: 1982 Chna Blue 300TD Other car in the stable: 2013 VW Jetta Sportwagen TDI / 6-speed MT
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