Date registered: Dec 2005
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1967 230 SL Fuel delivery problems
I am attempting to help my widowed next-door-neighbor with her 1967 230SL roadster. Her husband was the 2nd owner and drove it for a number of years, unfortunately after a long battle of many years, he passed away last year.
She would like to get the roadster running to either sell it or give it to one of her sons/sons-in-law and has asked my help. Among many problems -- teaching 177 freshmen, being in the middle of winter prep/engine rebuild on my 300ZX SCCA race car, and my 1960 Austin-Healey vintage racer -- I have little time to devote to diagnosing the problems, and yet I truly want to help her out.
I must add I did get it running about 4 years ago (after it had been sitting for many years) with little difficulty, even though I diagnosed a miss as a faulty/clogged injector.
In the meantime the car has been sitting unused for 4 years. The fuel tank was completely dry when I pushed it to my house, and after putting in 5 gallons of fuel I cannot get any gas to deliver to the injection system. I can get it to "run" (a term I use advisedly) on starting fluid, so I know it is getting spark. But a check of the fuel lines shows no fuel being delivered.
My suspicions are a clogged fuel line/fuel filter or fuel pump failure. The only factory manual I have is for a 1969 280SE/etc I owned and rebuilt many years back. Since it was carbureted with dual Zeniths, and the manual I have only covers 1968 and later models, I have a few questions:
1. Does this model of fuel injection have an electric fuel pump? I suspect the answer is yes, but I'd like to know for certain and where it is located. Should I be able to hear it clicking when I turn on the key?
2. Where is the fuel filter located?
3. The factory manual I have also covers 1968 and later 280SL, etc. Is there any significant mechanical design changes --apart from engine displacement -- from 1967 230SL to the 1968 and later 280SL?
4. Are there any on-line manuals available for this car? Can you point me to them?
All help would be appreciated. If at all possible, I would appreciate replies directly to my e-mail -- Marchor@acu.edu