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#1
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Gas smell, 82 380SL
Please advise.
Strong smell of gas while driving. I looked at fuel pump in rear and could not detect any leaks. I looked under the hood and again could not see any evidence of leaks. I traced the fuel lines from the tank to the engine and again did not see any evidence of leaks. At this point I am somewht befuddled as to the cause. The leak is probably evaporating as soon as it leaks so I am not sure where to look. Has any one else had this problem and what was the remedy? Any insight will help. Thanks . |
#2
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Did you check for leakage while the car was running? The fuel system pressure on a K-Jet is around 80 psi. You might only have leaking while the system is under pressure.
Check to make sure the return line is good and not blocked. Check that the fuel cap is tight. Just a couple suggestions.
__________________
Remember, it's not just a car. It's an Adventure. |
#3
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I'm struggling with a similar problem on my 72 350. I replaced all the under-hood lines to little avail. The gasket on my fuel cap is nice and cracked, so I've got one on the way right now. I'll report back with my results.
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68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500 Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i |
#4
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If the smell is pretty strong in the trunk check the gasket where the fuel filler and gas tank meet. Mine was leaking so that it seeped into the right wheel well in the trunk. Put your hand down there and you may be able to feel the gas. Got the garage to change the gasket and solved the problem.
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#5
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Radio Tech
Excuse my naivity, but what is the K jet and where is it located. Thanks |
#6
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Sorry Radio Tek for my lack of knowledge. I searched the forum and found that the k jet is the fuel distributor.. so i guess i know what I am to look at. Is it common for these lines come loose after a time? Since they are a flared connection ( i think) i am a little apprehensive to over tighten them.
Thanks and thanks to the others that responded! |
#7
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The gas smell seems to have been caused by a faulty seal gasket on the gas filler cap. Simple fix.... cut a new gasket from a piece of rubber sheet. Thanks to all for the hints.
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#8
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K-Jet is short for K-Jetronic, and is the Bosch 'model/generation' designation for the fuel injection system. My car uses the older D-Jetronic system, I've sen refernces to K-Jet, KE-Jet, L-Jet, and I suppose there are others.
Good to know that you got the problem taken care of. I've seen a few times that the gasket on the gas cap failing will give a fuel smell in the cabin.
__________________
Remember, it's not just a car. It's an Adventure. |
#9
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and where is the K jet located......
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#10
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well as long as someone else revived this old post...
I have been getting a gas smell but I would say it is from running to rich. I swapped coils to make sure all was burned but made no diff. Last time it was the dwell was off but that is still in spec now. It will stall if put in park and let to idle but not in gear at a traffic light. ????? |
#11
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I just recently had this problem with my 560SL. In my case it was a cracked fuel hose at the Charcoal Canister (under the left front fender cover -- in front of the front left tire). This results in fuel vapors (smells). I ended up replacing all the hoses from front to back on this system since I plan on keeping the car for the long haul. I also replaced the rubber at the Purge Valve under the hood at the left front.
Good luck finding your problem!
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All the best, J. P. Mose 1968 250SL 1970 280SE 3.5 Cabrio 1987 560SL 1990 560SEL |
#12
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Quote:
Another way these things can be made to run rich is for there to be a vacuum leak, as the MAP(manifold absolute pressure) sensor is a major control input to the ECU. Hope this helps some, Scott
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Remember, it's not just a car. It's an Adventure. |
#13
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Gas smell
Regardless of condition, replace the gas cap every year and you will never experience this problem again. An old line mechanic taught me this when i first bought the car in 1989 (560SL)
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1988 560SL Black Pearl/Palamino |
#14
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IMO that's a HUGE waste of money. I have driven Mercedes for a total of maybe 60 car years and over a half million miles and I can recall needing to replace maybe two fuel caps.
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Len '59 220S Cabriolet-SOLD and living happily in Malta '83 240D 351,500 miles original owner-SOLD '88 560SL 41,000 miles - totaled and parted out https://sites.google.com/site/mercedesstuff/home '99 E300 turbo 227,500 miles '03 SLK320 40,000 miles - gave to my daughter '14 Smart electric coupe 28,500 miles '14 Smart electric cabriolet 28,500 miles '15 Smart electric coupe 28,000 miles ![]() |
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