20 Most Recent 1986 BMW 3 Series - Page 9 Questions & Answers

plug gap should be on the under hood decal on the rad support/inner fender but somewhere around the motor.

Plug in a cheap OBD2 code reader. 9 pounds on ebay then enter the codes into a free app like OBD2 Check Engine Fault Codes Android Apps on Google Play

FIRST THING YOU DID NOT MENTION , DID YOU REPLACE THE LIGHT BULB ? DID YOU CHECK FOR POWER TO THE UNIT, GOOD TIME TO DO THAT IS WHEN YOU CHANGE THE LIGHT BULB, THEN CHECK FOR GROUND ON THE OTHER SIDE OF THE BULB, FIX MISING POWER OR GROUND, OR REPLACE BULB.

Bad bulb or it has its own control switch. Many high-end cars are changing the location of controls from the traditional to master panels. Flick the lens with your finger with the door open, see if it is loose, pry gently on the lens or housing edge to remove it to access the bulb.

This problem is usually caused by the struts strut towers or it's a linkage for the sway bar this happens a lot from pot holes and hard bumps in the road check entire assembly for rusted holes or broken spots on the parts but the shocks are more in likely bad

sounds like a clogged fuel filter