Assertion: spark plug's heat range | /r/HasProperty | cold
Facets:
value: for the application
type: PURPOSE
value: for the engine speed
type: CAUSE
Source sentences:
text: When the heat range is too cold for the engine speed, the firing end temperature will stay below 450°C and carbon deposits will accumulate on the insulator nose.
text: If the heat range is too cold, the spark plug will be unable to properly self-clean by burning off carbon deposits.
text: If black sooty deposits are present, a too rich fuel mixture is likely ( or the spark plugs' heat range may be too cold for the application).