Spark plug ejection from cylinder head
ENGINE
9 NHTSA complaints · 2015-05 → 2024-05
“DRIVING DOWN THE ROAD AT NORMAL SPEED OF 55 WHEN MY 2004 FORD F-150 4.2 V-8 BLEW A SPARK PLUG OUT OF HEAD!!”
“THE #3 SPARK PLUG HAS BLOWN FREE OF THE CYLINDER HEAD. THIS IS THE 2ND PLUG THAT HAS BLOWN FREE IN 1 1/2 YEARS FOR THIS TRUCK. THE LAST WAS EITHER THE #7 OR #8 PLUG. BOTH HAPPENED ON DECELERATION WHILE AT HIGHWAY SPEED”
“The contact owns a 2004 Ford F-150. The contact stated that while driving at an undisclosed speed, the contact observed the spark plug being ejected from the fuel compartment”