DIAGNOSIS C Wiring Heat the Combustic Fuel flow Combustic Heater ex Combustion blower runs but heater Breaker I fails to ignite Ignition cv Fuel soler Spark plu Overheat Fuel valvf nozzle Relay Carbon br Combustion blower starts but stops Purge swi after a short time Fuse wiri Combustion blower starts a few sec onds after system is turned on Combustion blower does not turn off within 2 minutes after heater or Purge swi ignition switch is turned off Combustion blower stops immediately when heater is turned off Ventilatin Heater ignites burner operates but Heater s A no warm air delivered Ventilatin Heat the Spark plu Breaker I Ignition c Spark plu Popping noise when heater starts or Combustic 1 cycles on Nozzle fc Solenoid v Fuel Spra Fuel pres Purge swi Door weal Cowl kicl tightly Air leaks Weld sear partmer panel Unused ai Odor of raw gasoline in car Fuel line v Solenoid i FUIDE Continued A rmostat control cable thermostat D in air hose C K M in blower fan C haust for restriction N oints E il F ioid coil for open circuit M g G switch H stuck on valve seat clogged fuel P idge across spark plug electrodes G tch I ng A tch I sir blower B itch wiring A system for restriction B mostat control cable thermostat D g gap and electrode location G oints E il weak or intermittent F g cable F n air insufficient C r looseness or leakage at seat M alve for leakage M y M sure K tch I her strips sealed ineffectively Q pad vents are not adjusted to close Q 1 not sealed between the baggage com idt floor pan the toe pan and the dash unsealed dash panel holes Q onnection at burner casting L alve cup for leakage L