Van loses power, engine misfires - 1990 Volkswagen Vanagon
First, you should check out normal tune-up (https://www.yourmechanic.com/services/tune-up) items (plugs (https://www.yourmechanic.com/services/spark-plugs-replacement), wires (https://www.yourmechanic.com/services/ignition-cable-spark-plug-wires-replacement), rotor & cap (https://www.yourmechanic.com/services/distributor-rotor-and-cap-replacement), etc.), then check ground straps from the engine to the chassis. Next, check the fuel injection system, since the air flow meter or...