The 1978 Ford truck 300 cubic inch straight 6 cylinder spark plug gap is .054 inch ( .044 inch in California ) according to www . motorcraft . com ( no spaces )
In a 1978 Ford truck , 300 cubic inch ( 4.9 L ) straight 6 cylinder , the spark plug gap is : .054 inch ( .044 inch in California ) according to www . motorcraft . com ( no spaces )
.32
The spark plug gap on a 1986 Chevrolet S10 4 cylinder pick up truck should be set at .060 inches. The spark plug for this vehicle may be purchased at any auto parts store.
this is the proper
.044
Check the spark plug and the wire on the 8th spark cylinder. Corosion, short, or just bad.
( .044 inch ) 351 Windsor and 351 Modified for 1978 Ford truck
My plugs require .44 gap
According to my Chilton's Auto Repair Manual : The 225 slant six cylinder engine in a 1978 Dodge has spark plugs gapped at : ( .035 inch )
2000 Nissan/Datsun Truck Frontier Pickup 2WD 2.4L SFI 4cylThe Spark Plug Gap.044 (In thousandths of an inch)
0.035
Generally there is one spark plug per cylinder.