Am I mistaken, this should be the same test setup. The solvent is then blown out with compressed air, and the injector s tested again. Rebuild kit for Bosch Fuel Distributor. The same thing happens over and over again. Your engine could become hard to start when cold or hot, run rough at idle, and exhibit loss of high end power. All pictures and references to the Porsche name, and the car names and shapes are for restoration reference only, and do not imply any association with Porsche. Some are just plain worn out.
If it cranks normally it may be an igntion components that fails when hot. The best and accurate results. Opening the valve to allow flow exposes the gauge to control pressure. Operating instructions for historical Bosch testers Misplaced and not found again, the operating instruction of the historical Bosch tester. High cold control pressure will make the mixture very lean. This is the later style with the smaller threads.
Retrieved 23 September Verify that the item fits your car. This is another fuel pressure tester. Click on image for full size 1. When the control pin rises this allows system pressure into the upper chamber, once the pressures in both chambers are equal the spring pressure deflects the diaphragm and lets fuel out to the injectors. If no external leaks, check for a leaking cold start valve of fuel injectors. For this, your tester should have a bleed-off valve and tubing. As air pushes the plate up the control pin also is pushed into the fuel distributor.
September 12, 2011 Followup from the Pelican Staff: - Sorry for the long delay in replying. It works off the air sensor plate as long as the plate is off the stop the pump will run. Accurate results are comparable to data. Consult the factory manual or fuel injection manual for the procedure. Connecting the tester: Working outdoors, you might find this an unnecessary step, but I preferred to release the system residual pressure and that fuel in the accumulator, in a controlled fashion.
Also, there may be a blockage in the supply line or leakage in the return line. Back to no resistance when i press the ventury. These vehicles are equipped with Bosch C. Later models have a switch that will cutoff the pump if the engine dies. The operating instructions for testers up to production year ~2000 are sorted according to the type designation. The bend is rather tight here, but workable.
One Complete Set For Cleaning and Testing! Pelican Parts is not associated with Porsche Cars North America in any manner, except for a mutual appreciation and love of the cars. As engine temp comes up the control pressure rises and the resistance increases leaning out the mixture hot control pressure is 50 psi. Any other checks I should perform? If full voltage is available at the plug, then the warm-up regulator may need replacing. Control pressure acts on the top of the control pin, cold control pressure is low 14 psi depending on model which lessens the resistance of the air sensor plate to rise. Version 3 tester now eliminates spraying the injectors out in the open. You can quickly set up this fuel test device and take readings from it. Instead of injecting fuel into the intake, this injector allows fuel to bypass the fuel distributor, which varies the fuel pressure supplied to the mechanical injection components based on several inputs engine speed, air pressure, coolant temperature, throttle position, lambda etc.
How can I Identify the year? Don't flame me on this; I know I shouldn't wash the cylinders down. We have recently added staff and are trying to get caught up. With the electronics disconnected, this system will operate as a K-Jetronic system. We cannot replace the spring. If still no leaks there, leakage may be at the fuel pump check valve or at the O-ring on the relief valve in the fuel distributor.
Then adjust the idle settings as needed. Or does it crank too slowly? The system was developed to comply with U. Warm-up regulator- An electrically heated bi-metallic strip operates a valve that controls fuel pressure to the fuel distributor. It is not a device that shows if the pressure in the fuel tank is correct. The quality of the machine and its parts is not only powerful but also durable. Since the electric fuel pump supplies more fuel that is used by the engine, a valve in the pressure regulator opens and returns this excess fuel to the fuel tank. This large fuel pressure tester gives you the perfect results in a short time.
You may want to rev the engine a bit between adjustments. Cost of service is as follows for the two step cleaning process as detailed above. With gauge hooked up to pressure test, put bleed-off tube into a fuel container of at least 2 quarts or 2 liters. There is no guarantee that back flush cleaning will restore every old gasoline mechanical fuel injector. This page last updated on March 10, 2014. Thermo-Time Sensor- This sensor detects the temperature of the cylinder head and when below a prescribed temp allows the cold start injector to spray fuel.