# 1993 BMW 3 Series - Running Rich **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [October 29, 2019, 2:19am UTC](https://community.cartalk.com/t/1993-bmw-3-series-running-rich/151672 "2019-10-29T02:19:01Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![PeterHatton](https://avatars.discourse-cdn.com/v4/letter/p/b2d939/32.png) [@PeterHatton](https://community.cartalk.com/u/PeterHatton)\ **Post date:** [October 29, 2019, 2:19am UTC](https://community.cartalk.com/t/1993-bmw-3-series-running-rich/151672/1 "2019-10-29T02:19:01Z")
The car is very fuely a lot of black soot at exhaust pipe outlet runs very rough on idle and dies when taking off once going it fly,s up high end, it is using a lot of fuel than normal,have replaced plugs,air cleaner filter,and fuel hose,s ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [October 29, 2019, 2:46am UTC](https://community.cartalk.com/t/1993-bmw-3-series-running-rich/151672/2 "2019-10-29T02:46:46Z")
Locate the fuel pressure regulator on the fuel rail. [https://www.rockauto.com/en/catalog/bmw,1993,318i,1.8l+l4,1011261,fuel+&+air,fuel+injection+pressure+regulator,6124](https://www.rockauto.com/en/catalog/bmw,1993,318i,1.8l+l4,1011261,fuel+&+air,fuel+injection+pressure+regulator,6124) Remove the vacuum hose from the regulator. If gas leaks out of this connection, the diaphragm in the regulator has ruptured, and gas is being sucked into the engine. Tester ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [October 29, 2019, 3:05am UTC](https://community.cartalk.com/t/1993-bmw-3-series-running-rich/151672/3 "2019-10-29T03:05:39Z")
Are you getting a “too-rich” engine diagnostic code?