Quote:
Originally Posted by benzdude42
My brother and I bought a non running 1992 190e last weekend. I was able to get it to get it to start, but shut it off to fix a loose belt. Well it wont start now. I drained the tank and fuel system and replaced the gas, New cap, rotor, spark plug wires and spark plugs. i have a spark tester and am getting great spark compared to how it was when it first started. I am getting fuel to the mechanical fuel distributor( cracked the lines while my brother by passed the fuel relay). I noticed that only one of the fuel pumps is making any noise and vibrating. Do these cars need both pumps to run? Also, it will back fire through the intake and exhaust after I crank on it for about 15 seconds. It gets super close to starting, but wont quite go all the way.
I'm really good with the old diesel benz's and the JDM motors, but this guy has alot going on under the hood. Any ideas would be a great help.
Thank you
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In my experience a problem like this is usually fuel related. Do you have a pop tester from your diesel experiences? If so remove the injectors and see if you can get them to operate a bit better (!)
Modern fuel (over here anyway) has a fair amount of bio content in it these days which means the fuel separates after a while - the water content causes havoc with fuel components.
I wouldn't be surprised if you find you need to replace the injectors and all of the rubber parts.
Make sure that the start valve operates.
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Whilst you are fiddling with these KE II CIS systems make absolutely sure that the rubber hoses running from the underside of the mixture unit and the air idle control valve and the breathing parts from the crankcase are well seated and leak free. It is quite easy to know something loose and then spend the rest of your life wondering why it seemed like it was going to start and now won't...
...keep your battery well charged.