the idle screw setting on the carb .how many turns do i go counterclock wise from bottom out.
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How to Identify and Resolve Common Issues ?
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A: This spark plug should have a gap set to 0.02 inches.
The Spark-Plug Gap
If the gap is too small, the spark will likely be too weak and cause the engine to run poorly or with poor efficiency.
Many think the larger the gap, the better. However, if the gap is too large, and the ignition system can`t provide the voltage needed to spark across the gap, or turbulence in the combustion chamber blows out the spark, misfires will occur.
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.
The gap setting is different for each vehicle but most are somewhere between 0.028″ and . 060″. Consult the owner`s manual or Champion ® catalog to find the recommended setting for the vehicle you`re working on.
Proper Gap is Important
015 in. The recommended gap varies widely for light-duty engines due to variables, although most gasoline engines start out with the plugs set anywhere from . 035 to. 045 in. or higher.
A smaller gap will yield a short, intense spark and will usually make the engine real responsive. A wide gap creates a longer spark arc but without sufficient “juice” from your ignition system, (including amps), it can be weak and yellow in color.
While you can gap spark plugs with household items in some situations, most technicians and car mechanics strongly recommend using a spark plug gapping tool. When gapping spark plugs, your mechanic will use industry-approved tools (a gapper) that do not damage the spark plugs (mainly the center electrode).
Every boat owner is different and how far you decide to push your marine engine is in your hands. However, running your boat at Wide-Open Throttle is not bad for your engine and can even help clear out carbon build up.
While most NGK spark plugs are pre-gapped, there are occasions when the gap requires adjustment. Care must be taken to avoid bending or breaking off the fine-wire electrodes. NGK recommends a round wire-style or pin gauge gap tool to measure the gap.
As the spark plugs wear, the spark plug gaps widen, also weakening MPG. This is because the wider the spark plug gap, the more voltage is required to arch between the electrodes. The smoother the combustion process, the lower the demand for engine power and the lower the demand for fuel.
NGK builds two types of iridium spark plugs: OE Iridium and Iridium IX®. Every plug in the Laser Series was designed for an OEM application. All dual precious metal plugs are designed to provide maximum longevity.
While spark plugs don`t technically increase your engine`s horsepower, they bring it back to its optimal combustion level. In simple words, your car will run as if it`s new with optimum acceleration control and improved fuel economy!
Should you decide to re-gap your Iridium Power plug, use extreme caution as improper gapping may damage or destroy the Iridium center electrode or porcelain center.
Spark plug gaps for car engines are typically 0.6 to 1.8 mm (0.024 to 0.071 in). Modern engines (using solid-state ignition systems and electronic fuel injection) typically use larger gaps than older engines that use breaker point distributors and carburetors.
The discharge voltage rises in proportion to the spark plug gap. The spark plug gap widens bit by bit as the electrode wears, so high discharge voltage becomes necessary and misfire occurs more easily.
These plugs are pre-gapped at . 044″.
Tighten the spark plug finger-tight until the gasket reaches the cylinder head, then tighten about ½ – ⅔ turn more with a spark plug wrench.
Every time a spark plug creates an arc of electricity, it very minimally shortens the electrodes. Over time, the gap between the electrodes grows larger. As this gap increases, more electricity is needed to spark ignition of the air/fuel mixture.
At the top of the list, we have the NGK Spark Plugs. With iridium as its core material, this spark plug pack can operate at a much wider heat range as compared to ordinary spark plugs made out of platinum or copper.
With varying spark plug gaps and lengths, it`s important to buy the right ones when it`s time to replace yours. Spark plugs that are too long can protrude into the cylinder and cause piston damage. Meanwhile, spark plugs that are too short will struggle to ignite and often cause engine misfiring.
This common tool is available in assorted drive sizes and configurations (short, standard, long-handled and flex-head). For removing spark plugs, a longer-handle, flex-head ratchet is the way to go, but a standard ratchet will also work. Ratchets with 72 teeth work better in confined spaces.
A regular socket can easily handle a basic spark plug replacement. But you`ll need the right socket size with swivel handles to reach the spark plugs without damaging the wires during changing. A universal joint socket may also do the job.
When a boat is over-propped (the propellers have too much pitch), the outboard(s) highest achievable RPM is lower than the manufacturer`s recommended wide-open-throttle RPM, which typically is between 5000 and 6000 RPM.