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#1
11-03-2008, 10:34 AM
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Gas Smell in Exhaust - Running Rich? '75 450SL
I am .. and have been getting a heavy Gas smell from the exhaust on my 1975 450SL. I put in a new Air Pump, didn't help. Injectors were rebuily about 1,000 miles ago.
Also - any good shops in Buffalo, NY area? I could use some help. Any suggestions?
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James P 
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#2
11-04-2008, 11:08 AM
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Check your coolant temp, air temp, and manifold pressure sensors, and make sure your cold start valve is not leaking. These are easy tests.
If you send me an email, I will send you a diagnostic guide for D-Jet.
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Chuck Taylor Falls Church VA '66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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#3
11-04-2008, 12:16 PM
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are you sure its rich? what color are the plug tips? black smoke on heavy acceleration?
__________________
Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD  16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace
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#4
07-06-2009, 01:48 PM
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Black Smoke
At idle and on acceleration I have black smoke. Enough to show up on the ground if I let idle for a minute or so
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#5
07-06-2009, 03:53 PM
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The sensor that has the greatest effect on the mixture is the temp sensor. I'd check it against the resistance charts to see if it's anywhere close. Also, make sure it's wiring is viable.
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Richard Wooldridge '01 ML320 '82 300D 4.3L V6/T700R4 conversion '82 380SL, '86 560SL engine/trans. installed '79 450SL, digital servo update '75 280C
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#6
07-06-2009, 04:46 PM
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does the ecu on that have an adjustment for lean /rich
__________________
Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace
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Linear Mode
