This is part three of a series where I am trying to diagnose poor cold starts on my 1979 280SE. Please click here for part 1 and here for part 2. In the last part, the fuel pressure tests had pointed to high control pressure. This would most likely be cause by the Warm Up Regulator (WUR). However, after a while the pump became...
Earlier in the week I attempted to run a fuel pressure test on my 1979 280SE. On further examination, I was pretty sure I had it connected up wrong. The instructions call for the pressure gauge to be attached to the larger fitting on the warm up regulator. The warm up regulator is hidden down to the side of the engine on the...
I’ve been trying to get to the bottom of the running issues on my 1979 280SE. The last thing I tried was draining all the fuel and replacing the fuel filter and tank strainer. Once the car warmed up, it actually ran reasonably well. I took it for a drive for about 40 kilometers and it was running better and better. ...
More Posts
