Quote:
Originally Posted by Marrs
Very good, thanks for the positive reinforcement. I am approaching the first 100k in this car and all seems good but I just wanted to be sure as this is my first vintage Benz (tho not new to old cars). I do all your recommended steps and oil change about every 1,500 miles since I use conventional and to keep the gas out of the oil since the early MFI seems to leak fuel. I'm told this was common and known even when they were built, considered a trade-off to the new technology.
Hmmm, maybe I just need to go drive her right now.
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I'm not aware of any fuel leaking problems with these engines as an inherent design flaw. If you have a bad injector the engine won't run very well. All three njectors spray at the same time so all injectors in that group have to be very closely matched. Most of them will break at about 200 - 220 PSI and they should be within 7 PSI of each other. I try to group them so that I have the lower ones in one set and the higher ones in the other set. If you have one injector that leaks or is much lower than the other two in that set, you will find that most of the fuel will try to flow out of that one rather than all three. Injectors for these cars are getting really hard to find andare quite exspensive as new parts.
You should also have the distributor blocks checked for even flow. They can plug up and look like injector problems when it's really the block that's plugged up. A lot of people aren't aware of this and the car never runs properly. The injection pump can be set to TDC or BDC although I prefer TDC.