mff@wuphys.UUCP (Swamp Thing) (02/15/85)
First, thanks to all the people who have written with sugestions and help. Now, here's where I stand now. First of all, I now know that the reason that the oil smells like gas is because it IS gas! I'm changing the oil more than once a week and the stuff looks more like gas than oil when changed. Were talking QUARTS of gas in the oil after a couple of hours of driving. Here were my first suggestions as to what I though might be the problem: 1) The injectors could be shot. After I shut off the engine, they could be squrting raw gas into the cylinders, which then leaks into the crankcase. 2) It's been cold lately and the car runs like crap for the first 5 minutes after I start it when the engine's cold. Perhaps the gas isn't atomizing completely before it's sucked into the cylinder. 3) Shot rings. I don't think this is it becuse the engine is fairly well. The most common suggestion I recieved was that the gas pump diaphram was ruptured, causing gas to pour into the crankcase. I guess I should have mentioned in my article that the Bosch system used in this car has an electric pump up by the tank. Someone else mentioned the problem of the cold-start injector screwing up and pouring gas continually into the "intake manifold". That's mentioned in the VW manual as something that can cause oil dilution. Unfortunately, this part was introduced in '69. I have a 68. Oh well. The other suggestion was #2 above. It's the only one of my origonal suggestions that I consider possible because: 1) I've checked the injectors for leakage and sticking by pulling them out still attached to the feul ring and turning on the pump. No dice. 2) Compression is 135 +/- 5 lbs/in**2 all around. No problems with rings, cracked pistons or heads, etc. I belive now that the problem is that for some reason, the computer is injecting too much feul into the intake ports. I also think, but am not sure, that the feul is getting into the case via the valve stems. Since the stems are horizantal and not vertical as in most engines, and the gas is injected into the intake ports just above the valves (and not into the cylinders themselves), if there is too much raw (non-atomized) gas being injected, it could leak through the valve guide and into the rocker-arm assembly. Has anyone heard of a problem like this? I don't think I have shot guides because the engine is fairly new. Also, the manual doesn't show any seals along the valve assembly. Is this correct? I'd appreciate any help. I plan to give the feul injection system a going over this weekend. I'll post any new developments. Now for a little stress-management. I HATE FEUL-INJECTED VOLKSWAGONS. The advantages of the old-style air-cooled VWs is that they are VERY simple mechanically. I'm hardly a hot-shot mechanic, but I could, with the help of a friend, pull the engine in a couple of hours on my bug. There were I total of 5 wires going to the engine. There were no vaccuum lines (after installing a centrifugal distributor). The disadvatages are that they have no heat, are loud, have a bumpy ride, and require constant maintinence. (The recommended interval between oil change, tuneup, and valve adjustment was 3,000 mi !). BUT THESE POND-SCUM FEUL INJECTED PERVERSIONS HAVE NON OF THE ADVANTAGES, ALL OF THE DISSADVANTAGES, AND MORE. *M*U*C*H *M*O*R*E. The stupid engine looks like a frigging rats-nest with all the wires and vacuum lines. This car was ahead of its time in the worst possible way. I hates them. I realy do. So there. Mark F. Flynn Department of Physics Washington University St. Louis, MO 63130 ihnp4!wuphys!mff "There is no dark side of the moon, really. Matter of fact, it's all dark." P. Floyd
jackh@zehntel.UUCP (jack hagerty) (02/19/85)
> > I HATE FEUL-INJECTED VOLKSWAGONS. > I hates them. I realy do. So there. > > Mark F. Flynn But how do you feel about fuel injected Volkswagens? -- Jack Hagerty, Zehntel Automation Systems ...!ihnp4!zehntel!jackh