How are spark plugs used in port injection engines?
Port-injection engines inject fuel during the intake stroke, while direct-injection engines, gasoline or diesel, might wait until the compression stroke. Finally, heat is provided in one of two ways: one or two spark plugs for gasoline engines, or the heat of compression for diesel engines.
What are the symptoms of a spark plug problem?
Hesitation / Surging – Slightly less noticeable, hesitation on acceleration and surging might be described as the engine not “responding” immediately to driver input. Then, a “surge” in power might come unexpectedly. This slight delay in power delivery might indicate a spark plug problem.
When does a spark plug ignite a piston?
The spark occurs when the charge jumps between the spark plug electrodes, just 0.01” to 0.07” (0.25 mm to 1.8 mm) across. The heat generated, between 8,500 °F and 11,800 °F (4,700 °C to 6,500 °C), ignites the air-fuel mixture, driving the piston down in the power stroke How can you tell if your spark plugs need attention?
How long does it take to replace intake manifold on Ford truck?
Basically Ford engineers determined this was the most effective way to package the intake manifold into the engine compartment on these cars, and all things considered six hours to remove and replace the intake manifold, sparkplugs (and six ignition coils) as well as a motor mount would be tough to beat on your old truck with a small block.
How many bolts does a Pentastar spark plug need?
The 7 bolts will need to be torqued to 7-9 Nm (5-6.6 lb/ft). These bolts must be torqued to spec. Next, tighten the two 10mm bolts in front of the plenum. Next, install the bracket on the other side of the plenum.
How big is the spark plug gap on a Chrysler Pentastar?
Spark plug gap is 0.043″. Spark plug tightening torque is 13 lb/ft. Your new spark plugs will most likely come pre-gapped.
When to replace gaskets between intake manifold and plenum?
If you have new gaskets to install between the intake manifold and plenum, now is the time to replace them. Otherwise, go to the next step. Install the plenum in reverse order of removal.
Basically Ford engineers determined this was the most effective way to package the intake manifold into the engine compartment on these cars, and all things considered six hours to remove and replace the intake manifold, sparkplugs (and six ignition coils) as well as a motor mount would be tough to beat on your old truck with a small block.