.040
look under the cowling, my merc. 25 tiller gap is .40
check the compression. might have scored cylinder. also can be found by pulling plugs the scored cylinder is the one with the burned plug. fouled plug?
Any motor should get spark with or without gas in it. The ignition system works off electronics and does not require fuel for it to work. Yes you should get spark.
Mercury is a liquid at 25 degrees Celsius.
The spark plugs come pre-set. NGK B7HS-10. THe last (2) numbers of "10" indicate the pre-set gap.
Mercury is a liquid at 25 degrees Celsius.
A 25 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
The Freedom Spark was created on 2006-09-25.
The spark plug gap for the 2003 Pontiac Sunfire 2.2 liter 4-cylinder is .043 (in thousandths). The '03 Sunfire gets up to 25 miles per gallon in the city and 33 mph on the highway.Ê
Normal compression for a 25 hp 2-stroke Mercury outboard engine typically ranges between 90 to 130 psi per cylinder, depending on the specific model and its condition. It's important to ensure that both cylinders have similar compression readings for optimal performance. If compression is significantly lower in one cylinder compared to the other, it may indicate issues such as worn rings or a blown head gasket. Regular maintenance and checks can help maintain proper compression levels.
advance auto sells a spark plug tester for around 25 dollars