The correct Autolite plug for your Explorer is APP103 gapped at 0.054′′ .
What is the spark plug gap for a Ford Explorer?
The one the owner’s manual recommends is now factory gapped to 0.44 , but the shop manual and the sticker (which was put on there when the plugs came factory gapped to 0.54) recommend 0.54.
What is the spark plug gap on a 5.4 Ford?
The proper gap for spark plugs is always listed on the underhood emissions label. The gap for 2v 4.6L and 5.4L engines is . 054 to . 056 inches .
What is the spark plug gap for a 2003 Ford Explorer?
The 0.061-0.068 gap comes from the Ford OEM Service DVDs for 2003, 04 & 05, for the 4.0L Explorer, Explorer Sport-Trac, Mountaineer & Ranger, originally equipped with the Motorcraft AGSF22PM plug.
What should my spark plug gap be?
For most racing applications, you usually want the plug gap to be between 0.020 and 0.040 of an inch . Most engine builders seem to settle around 0.035 of an inch. Factors such as the type of ignition you run, cylinder heads, fuel and even timing can affect how much gap will work best for you.
What is the spark plug gap on a 2005 Ford Explorer?
When I changed the plugs on our ’05 Explorer 4.0 I set the gap at . 54 and have had no problems — gas mileage increased 2.5 MPG so it must have worked!
Do Motorcraft spark plugs come pre gapped?
The fine tip iridium are always pre-gapped at factory and the manufacturers specifically say that should NOT be messed with by user. The Motorcraft ones are cheap versions of Autolite Dual Platinum, they requested “no factory gapping” to their OEM (Autolite) to save costs, that’s why the gap is never exact.
What year Fords have the spark plug problem?
The original equipment Motorcraft brand spark plugs that were factory installed in many late model ( 2004 to 2008 ) Ford trucks with 5.4L V8 and 6.8L V10 engines, 2005 to 2007 Mustang GT 4.6 & 5.4L V8 engines, and 2008 Mustang GT models built prior to 11/30/07) can break when you attempt to remove them!
Do you gap platinum spark plugs?
DENSO spark plugs are manufactured with a pre-set gap. ... Do not change the gap on platinum , iridium or twin tip spark plugs, as the fine electrodes may get damaged.
What will wrong spark plug gap do?
Spark plugs that are gapped incorrectly can cause an engine to miss, or run erratically, especially during idle. The incorrect spark plug gaps can cause uneven firing of individual spark plugs and delay engine combustion ; both of which can cause an engine to miss or idle erratically.
Is a wider spark plug gap better?
The larger the gap , the more voltage is needed to jump the gap. Most experienced tuners know that increasing the gap size increases the spark area exposed to the air-fuel mixture, which maximizes burn efficiency.
What happens if spark plug gap is too big?
Excessive spark plug gap results when the voltage has too far to travel . ... Excessive plug gap also results in cylinder misfiring, a possible no-start condition, wet, black or fouled plugs, engine hesitation and rough idle. Excessive spark plug gap also happens as result of normal electrode wear and age.
What kind of spark plugs does a 2005 Ford Explorer take?
This 6 pack NGK V-Power Spark Plug is compatible with Ford Explorer Sport Trac 2005, 2004, 2003, 2002, 2001 4.0L V6 and is perfect for a tune up or performance upgrade.
Which is better iridium or platinum spark plug?
Iridium is said to be six times harder and eight times stronger than platinum with a 700° higher melting point. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Thanks to its strength, iridium spark plugs can last up to 25% longer than comparable platinum spark plugs.
Are pre-gapped spark plugs good?
Not always. In the past, it was necessary to gap spark plugs, but today spark plugs are usually pre-gapped . It is advisable to double check that the gap is correctly set to the vehicle’s recommended setting when installing spark plugs.
