I'm working on an 88 240 that runs rough at idle. Stupid me, I didn't check fuel pressure to start and did all the normal tune up stuff, plugs, wires, cap, rotor, clean TB, etc. Still idles rough. Checked fuel pressure and it has over 70 at idle. That explains the sooted plugs.
So, I get a bosch regulator which has the same numbers as the one on the car and no change. The regulator says 2.5 bar on the side and I wonder if it is the wrong part. As a shade tree test I pulled the regulator off and attached a big piece of hose and pinched it with varying pressure and the car began to idle perfect.
So, I suspect the regulator is not doing it's job. I broke my vaccuum gauge/pump so I can't manually apply vaccuum or even test how much is getting to the regulator. I'm going to try and borrow a pump but in the mean time does anyone have any ideas?
Thanks.
-Chris
So, I get a bosch regulator which has the same numbers as the one on the car and no change. The regulator says 2.5 bar on the side and I wonder if it is the wrong part. As a shade tree test I pulled the regulator off and attached a big piece of hose and pinched it with varying pressure and the car began to idle perfect.
So, I suspect the regulator is not doing it's job. I broke my vaccuum gauge/pump so I can't manually apply vaccuum or even test how much is getting to the regulator. I'm going to try and borrow a pump but in the mean time does anyone have any ideas?
Thanks.
-Chris