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#1
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White Smoke
Hey everyone,
I got my car (83' 380 sec) a year ago now and have been noticing a huge decrease in power over the months. The car has a very rough idle no matter if it is warm or cold. To describe it i would say that it just sounds like its sorta choking its self, then i will rev up a little then down..ect. I can feel the shaking of it while sitting at lights and so on. Ive also noticed that there is a white smoke/steam, i think its smoke and not water since i have been checking the water and it has staid level. The smoke smells like fuel so im pretty sure its not a water problem. I also have been getting continuly worse fule milage. My assumption is that i have one, maybe two, cylinders with no compression and this is causeing all the problems. How can i be sure and what should i do? Any suggestions would be welcome. Thanks!!
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1983 380 SEC |
#2
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Are you sure that it's white not blue smoke? I hope to find it white not blue.
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Master Computer Engineer, A+, Network+, MCP/MCSA/MCSE 4/2k/2k3 - Messaging, MCTS, MCITP, MCT, Brainbench, ICDL and starting Ph.D 380SE 1984 <------- Totaled by flipping accident 300SE 1988 <------- Sold Volvo S70 2000 <---- 4 family Opel Omega 2002 <-- 4 family 560SEC 1989 <------ Sold 560SEL 1990 <------ Sold 560SEL 1991 <------ 4 my mother 560SEL 1989 <------ Sold 600SEL 1992 <------ Current http://search.ebay.com/_W0QQsassZkhazenzcc |
#3
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No its definatly white. No doubt..unless my eye sight has failed me, in which case i might not even own a Benz....
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1983 380 SEC |
#4
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check your trans fluid and make sure that the modulator diaphram is not broken which will allow the engine to suck the trans fluid into the intake and burn it.
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David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg |
#5
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A compression test would be helpful too.
But do what David said first. Tom W
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#6
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I'll do them both but im fairly certian i dont have a problem with loosing any fluids but gasoline... I just have a sick feeling i need new piston rings. I need to put in a new lower ball joint and rear springs so maybe i should just take out the engine while im at it.
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1983 380 SEC |
#7
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modulator diaphram???
Quote:
Last edited by davidlnrd; 02-23-2008 at 06:48 AM. Reason: add info |
#8
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is it losing engine coolant ? if it is it could be head gasket related.
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Whether you think you can or cannot, Either way you're right!. by Henry Ford. |
#9
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White smoke
Quote:
??? |
#10
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OK, how much oil and trans fluid are you losing ?
meaning are you using a quart every week etc for oil and trans ? for beginners, to isolate the head gasket problem, go to any auto store or walmart. pick up a bottle each. I've tested all the products and this company did the trick to stop the leaks. http://www.barsproducts.com/T20L.htm http://www.barsproducts.com/E10L.htm use it for a week and then post your updates. Good luck and I hope this will do it. worse case is going to be what your'e already looking to do . which is repairing. but this might prevent costly repairs. worth a shot.
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Whether you think you can or cannot, Either way you're right!. by Henry Ford. |
#11
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white smoke
Thanks for the help. I think it is a bad diaphram [transmission modulator]. I will look in to the stop leak as well. After the shop added two liters of ATF the car smoked like crazy for a day and then it just plain stopped. I check the ATF and it is a half liter or so low again. The trans doesnt seem to slip until it is a couple liters low. Is it possible the trans was over filled and thi caused thye smoke or is it most likely the modulator? Also can toy tell me where the modulator is located or even a diagram and what the steps are to replace? As I said I am in the Philippines and I dont have the confidence to do it myself but I do have a great mechanic as a neighbor but he works on local toyotas and nissans mainly. He is a little intimidated by the Benz. I think will instructions though he could easily change the transmission modulator. Thanks again.
David |
#12
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Intermittant smoke
I too had monsterous amounts of smoke coming out of my 92 300D. It made no sense. There was no oil in the coolant overflow. No foamy mess on the oil dip stick. I wasn't using oil or water. I did need to add about a quart of transmision fluid every two weeks. The smoke seemed to come only at highway speeds when trying to merge onto the interstate. Then the smoke coming out was so dense, I almost couldn't see the car behind me. When I let off the gas, the smoke cleared up. (ok, I never could tell if it was white, blue, or black. It could have been purple....I was only concerned with the quantity!)
So thinking I've blown a head gasket and not really wanting to attempt it myself, I took it to my mechanic I use for the hard stuff. He quickly told me I had a blown modulator gasket and the engine was sucking out the tranny fluid. It doesn't burn very well so the cause of the smoke was unmasked. So instead of a blown head gasket or a trashed turbo or a crack in the block it was a simple modulator. What should have given me the clue it was none of those was that the smoke was intermittent. Constant smoke would have suggested the other was the problem. As a side note, my tranny was giving me really hard shifts between 1st and 2nd gear. No more! Jrags0951@hotmail.com |
#13
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may be you guys should check on the condition of your ignition wires, you know the one that connects the coils into the spark plugs.
i had a bad one in mine and it caused me low fuel mileage+rough idle
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