What kind of Bosch warm up regulator do I use?
The WUR used in this paper is taken from a 1977 BMW 320i. Differences will be found with warm-up regulators from other cars but all Bosch warm up regulators share the basic configuration of the one used here.
What do you call a warm up regulator?
Playing with your K -Jetronic Warm Up Regulator, or WUR. Playing with your K -Jetronic Warm Up Regulator, or WUR. This little goody is a common culprit in K-jet or CIS problems, along with pumps, one- way valves, accumulators and fuel distributors.
What’s the hot pressure on a WUR regulator?
Schematic of the unit (courtesy Robert Bosch). Basically the spring pressure on the regulator diaphragm (4) sets the hot control pressure – bimetallic strip fully heated, not pressing down on the spring.
How to re-assembly a K-Jetronic warm up regulator?
Re-assembly. Fit the O-ring, steel shim, button and cover plate, ensuring that the button sticks through the cover, with the flat side to shim, and fit the 4 screws. Drop the electrical connector through the top hole from the inside, slide the bimetallic down its post, and the wiring should fall into place.
What is the end number of a Mercedes warm up regulator?
It has a bosch code, for example 0 438 140 068. The end number (068 in this case) is the number that gives us the intended calibration of the WUR. Now here are the calibration specs for each warm up regulator, straight from mercedes benz: Specifications for some WUR used in the M116/117 and M110 engines.
What is the Bosch code for the warm up regulator?
Moreover, when accelerating, there are vacuum ports in the WUR that can affect the control pressure too, for more details on the vacuum side of the WUR please read: Now, look at your Warm Up Regulator. It has a bosch code, for example 0 438 140 068.
Where do you connect the warm up regulator?
Connect the control pressure measuring gauge. One hose goes to the fuel line that is on top of the fuel distributor, the other goes to the input of the warm up regulator. For now, we are only going to use the top half of the warm up regulator. 3.
What causes a warm up regulator to fail?
A warm up regulator failure occurs when there is a loss of pressure available from the warm-up compensator/regulator. Before you do any work on your car it is important that you wear safety glasses, work gloves and dispose of all fluids in a safe manner.
The WUR used in this paper is taken from a 1977 BMW 320i. Differences will be found with warm-up regulators from other cars but all Bosch warm up regulators share the basic configuration of the one used here.
How does the warm up regulator work on a Mercedes Benz?
If your acceleration is muted the warm up compensator may be broken or on its way to being kaput. The warm up regulator increases the fuel flow making the flow richer. The warm-up regulator applies opposing pressure on the injector pins of the fuel injector.
What kind of warm up regulator do I Need?
Warm Up Regulator- ( CIS ) Control Pressure Regulator by Bosch. DeLorean warm up regulator, Mercedes-Benz warm up regulator, Porsche warm up regulator, Volvo, Audi, Lamborghini. Also known as ( Cis ) Control pressure regulators. All units are remanufactured unless otherwise noted new and carry an 18 month warranty.
How to do warm up regulator ( WUR ) calibration?
Warm up regulator (WUR) Calibration 1 Put the fuel pump relay back into place. This is important in this step! 2 Turn the engine on. It will run with a very rich mixture (because the control pressure is like 0.5 bar.) More