I have a 2005 and compression should be close to 120 psi. Normally a good engine will have compression between 115 and 130 psi but a leak down test should be performed also to know the full condition of a cylinder.
The spark plug gap for a 2003 Mercury 125hp outboard motor is .040"
where can i find an owners manual for a 2003 75HP mercury outboard
What is the correct spark plug gap setting for a Mercury outboard 2003 200 HP EFI
For a 2003 Mercury Saltwater 200 HP outboard motor, the recommended compression should typically be between 100 to 120 psi per cylinder. It's important to ensure that the readings across all cylinders are within 10% of each other for optimal performance. If compression falls significantly below this range, it may indicate issues such as worn piston rings or valve problems that need to be addressed. Always refer to the specific service manual for your model for the most accurate specifications.
My 2003 3.3hp outboard motor is 50:1 mixture.
No compression could mean a blown head gasket, cracked head or cylinder.
Mercury quicksilver premium TC-W 3 or equivilent
Cylinders compression pressure Sentra 1.8 : 192 psi
78 lbs, as I assume it is the same as a '99 model
Yes everything I tried been to big
Coil pack and the spark plug- check compression
The dry weight of a 1994 model, 15 hp Mercury 2 stroke engine, is 71 lbs, for all models.