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#1
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190 E cooling issue
I am driving a 190 E 1.8 Class from 1992 with 142.000 Km's. Car is doing fine, engine runs OK oil consumption normal
however one thing is keeping me busy; Last year I replaced the waterpump due to external leakage through the overboard drain . Problem solved, however in that same period I started to smell cooling fluid. I do not see any leakage, nor from hoses nor from the heating radiator. The coolant level drops in a month such that i need to add some cooling fluid every now and then to prevent the warning light showing up. Interior heating system is doing fine. I removed all the air from the system by running up the engine with the heater at max. and added the cooling fluid untill it remained stable (at least for a while). Checked the oil level stick, no signs of water, the exhaust tends to smoke white smoke a little bit more then usual, particular at cold days. Ignition plug of cylinder 4 seem a little bit more white then the other 3, but in general looks good. I am surprised by the high pressure in the expansion tank, after filling up to level, when the engine has operated a while the level is significantly lower and at relief of the filler cap is coming way up again. Is this normal? I am still wondering where my cooling fluid is going, I have my doubts about the head gasket. |
#2
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The 1990 & later M102 engines(USA 2.3) seem to enjoy head gaskets at cylinder # 4. Sounds like you are also having that problem.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
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