( .044 inch ) according to fordparts.com for the 300 cubic inch / 4.9 liter
inline six cylinder engine in a 1979 Ford F-150
The spark plug firing order for the 4.9 L ( 300 cubic inch ) straight 6 cylinder engine is ( 1 - 5 - 3 - 6 - 2 - 4 ) ------------------------------------------------------------------------------------------------------------ The distributor rotor turns CLOCKWISE -------------------------------------------------------- The distributor cap is installed with the marked # 1 position facing away from the engine --------------------------------------------------------- The engine cylinders / spark plugs are numbered 1 to 6 , going from the front of the engine to the rear of the engine
I was looking at one of the Ford websites : For a 1978 Ford F-250 : It shows .044 inch spark plug gap for all engines except the 4.9 liter / 300 cubic inch inline ( straight ) six cylinder engine For that engine it shows .054 but I believe that is a mistake because for 1977 and 1979 it shows the .044 inch spark plug gap
www.motorcraft.com shows (.044 inch ) plug gap on the 1989 F150 300 cubic inch ( 4.9 L ) straight 6 cylinder engine
( .044 inch ) spark plug gap for your 1984 ( 300 cubic inch ) 4.9 L straight 6 cylinder Ford engine
A 1999 Suzuki King Quad 300 should have a spark plug gap of .028 inches. A spark plug for this vehicle should cost about $2.20.
On a ( 1996 ) Ford F-150 : The only six cylinder engine from the factory was the ( 4.9 liter / 300 cubic inch INLINE / straight six cylinder engine ) Check the Vehicle Emission Control Information ( VECI ) decal in the front of your engine compartment for the spark plug gap and type of spark plug that is used ( I BELIEVE it is .044 inch spark plug gap )
.35 on a plug gapper
1987 Ford Truck F150 1/2 ton P/U 2WD 4.9L FI 6cylThe Spark Plug Gap.044 (In thousandths of an inch)
check out the spark plug
according to my Chilton repair manual, the spark plug firing order for a 1979 Ford 302 V8 is ( 1-5-4-2-6-3-7-8 )
SPARK PLUG GAP2001 Lexus GS300 3.0L SFI DOHC 6cylThe Spark Plug Gap.044 (In thousandths of an inch)
The spark plug firing order is ( 1 - 5 - 3 - 6 - 2 - 4 ) The distributor rotor turns CLOCKWISE The marked # 1 position on the distributor cap faces AWAY from the engine The engine cylinder locations are numbered 1 to 6 , from front to rear ( on your 300 cubic inch / 4.9 liter Ford straight 6 cylinder engine )