Hello,

For a while I was having terrible problems with the 122E in hot weather. The D-jet pump would simply stop pumping fuel, instead just howling and spinning. The hotter it was, the worse the problem. I never had problems if the outside temp was less than 75 or 80. Finally, after yet another unexpected walk home, I decided enough was enough.

On a BMW 2002 message board there was a fellow that was having similar issues with his 2002 tii and solved it using a different pump. I learned that the 2002 tii used the same fuel pump for its Kugelfischer fuel injection as the Bosch D-jet. It has better suction for pulling fuel out of the tank, quieter operation, and is about half the price of the D-jet pump. I was convinced it was worth it, so I installed the new pump and modified the wiring and plumbing as necessary. Now for the test.

To test, I took it to work the next day and waited until the bank sign up the street (which sits in the sun) read 115 degrees and headed out. I sat in traffic, I drove in parking lots, I floored it up hills. The car didn't have even the slightest problem and I could take the heat no longer, so back to work I went. The newer technology is far superior to the OEM parts. I would suggest doing the same thing to anyone who finds themself needing a new fuel pump.


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Justin 70 1800E, 66 122E