Engine Misfire? 1988 Bmw 325i?

Question

I think my 1988 BMW 325i may have an engine misfire due to fuel problems. The spark plugs and wires are new Bosch. I really dont think it is an electrical problem. There is NO CHECK ENGINE LIGHT. Just wanted some opinions, here are the symptoms and what I think may be causing them. I think I should check the fuel pressure at the rail, and for fuel leaks in the hoses and lines. What do you think?

- Rough Idle and Hesitation... misfire due to fuel problem?

- High Idle... IAC valve raising rpms to compensate for misfire?

- Gas Smell inside car... Fuel Leak, Fuel Filter, Fuel Sender Unit?

- Bad Mileage (should be mid 20's but is at low teens)... Fuel Leak?

- Low Injector Pressure... Fuel Leak?

Answer 1

Check your dist cap and rotor if your fuel pressure is good.

Answer 2

When having problems like this the first thing you do is check the fuel pressure always probably to high.  Also it may have a bad computer's temp sensor.  Usually unplugging it while its running can tell you something.  You know I can't remember if the 88 3 series has a check engine light.  I don't like 3 series..