About Paul Expertise Almost anything about most European cars BMW, Mercedes ,Audi ,VW and general auto-ectrical questions
Experience I have been a mechanic in the U.K for 15 years on European cars I am ATA qualified (U.K equivalent of ASE). Also home and diy mechanic for family and friends now re-located to the U.S
Expert: Paul Date: 7/12/2008 Subject: 1991 190E 2.6L W/N Start
Question I have a 1991 190E 2.6L, Automatic, approx. 110k. I was on a road trip driving 65mph w/the cruse set. All of a sudden the car lost power. I pulled over and the car would idle very low. When I pushed on the gas the car would back fire. I drove it over to muffler shop, approx. 1/16 mile and got it on a lift. The cattalic converter was extremely hot. I figured the cat had been blocked and caused excess back pressure, preventing the car from driving. The exhaust shop would not cut the cat (understandable due to EPA regulations).
I drove the car out of the bay and parked it for about 45 min. waiting for the truck and trailer to pick me up. When it got there, I tried to start it to drive it onto the trailer. It would not start?
Now it is home and i removed the exhaust from the headers and tried to start, no luck. I began to trouble shoot and found that the fuel pump is priming, i have a good spark at the plugs, and it is getting fuel inside the intake. There is no fuel on the spark plugs and no fuel pressure on any of the injectors. I am at a point were i know nothing about the Bosch fuel system.
Any help would be greatly appriciated.
Answer Hello Aaron, your car needs a certain amount of backpressure to fire up you need tore-connect the cat to the headers but before you do this empty the old debris out from the cat so you have a clear flow through the muffler, make sure there is nothing rattling in the entire system and re-fit it to the car. After this it should run. There is one major point I would like to address, the main reason for a failing monolith (blocked up cat) is a misfire, if you had a misfire before, you will still have one. Do you have a good spark at all 6 wires? - Let me know what happens _ Paul
