BenzWorld Junior Member
Date registered: Oct 2008
Vehicle: 1972 280SEL 4.5
Location: Colorado Springs, Colorado
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I suspect a sensor somewhere I can't find... Perhaps in the emission controls? As for when was the last time engine work was done, Sometime in 1972 when it was built. The vehicle has near 350,000 miles on the original driveline. I have a very small whine in the rear end, the transmission uses a pint oil fluid every 8,000 miles or so, the engine consumes oil due to the leak at the upper pan gasket (was worse until I replaced the sump gasket. This issue only rears it's ugly head in the cool/cold weather. The only temperature controlled units on the engine I am familiar with are the cold start sensor/injector (draws air from the TB) and the vacuum advance delay which I have removed. Any others?
Oil pressure in this engine is superb, idle around 30 pounds hot in drive and of course the gauge pegs once off idle. What was MB thinking? How can you tell if the pressure bypass regulator is working in the pump? The EFI works OK. As it is a D-Jet what can you really expect. If I were younger and more ambitious, I would replace it with a closed loop system
bostosh, Willys Flat Heads Forever. My '48 is running on a rebuild from the mid 70's when it was rebuilt to accomodate unleaded fuel. The compression is within 10 pounds of new and only 5 pound differential between the cylinders.