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On 16 Dec 2001, at 21:35, Mark Mcatee wrote: > First, know which system you have because > the D-jetronic and the L-Jetronic are different. My '69 has the > D-jetronic and the newer models have the L-jetronic. All the type 3 FI is D-Jetronic. > No air leaks in the hoses. This is relatively unimportant in the D-Jetronic. MUCH more important in the L-Jetronic, which is where you will see it mentioned. For our systems, the only places vacuum leaks will make a difference will be in the hose to the pressure sensor, or right near the head. > Fuel pressure must be 28 psi. (for my '69 with a 1600cc). Later systems, 70-73 amended this to 28-30 psi, although I've not found a source that tells where it should be set within this range. > The pressure sensor seams to be a critical component. It tells the > brain what the load condition of the car is to make adjustments of > the duration of the injection. If yours hasn't been messed with and > you want to try to adjust it here are some very important notes: The most important thing to keep in mind is that if you have a pressure sensor that has not been tampered with, you will be MUCH better off leaving it alone. Almost everyone starts here when experiencing problems that are perceived as FI problems. They almost never are, but by the time they figure that out, the tampering is done and the original setting has been lost. I still have no way to recover this setting. > The pressure sensor will affect the emissions and fuel economy of > your car a lot. Yes, and there is no way to tell what effect adjusting it is having without the right instruments. > I have The Bentley manual and it has some good information in it too. Absolutely. This is where everyone should start. - Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe