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Generally speaking, without the exact factory spec., you should have over 60lbs., but you may find your motor will run with less. Even if the number comes out low, spray some WD40 into both cylinders throught spark plug holes. turn engine over couple dozen times. Spray a little more WD40 into cylinders and replace one plug, putting compression tester into other spark plug hole. Retest..If numbers improve it is bacause you have some rust that has formed on cylinder walls and it will take a bit of working piston to get it seated back in properly. P.S. My old 3hp Lightwin has 70lbs. in both cylinders.
What else can I help you with?
What is the engine compression specification for a 1989 Evinrude 110 hp VRO outboard motor?
110
What year model is an Evinrude 9.5 hp with the model MQ-10R Serial J2478191?
The Evinrude outboard, model MQ-10R, would be a 1964 model, 9.5 hp.
What year evinrude boat motor serial number 5402b-e02180?
5.5 HP 1964 Evinrude Fisherman 5402B-E02180
What is compression on 1975 70 hp evinrude outboard?
Compression on a 1975 70 hp Evinrude outboard refers to the pressure generated within the engine's cylinders during the compression stroke, which is crucial for efficient combustion. Typically, compression readings for this model should be between 90 to 120 psi. Low compression can indicate issues such as worn piston rings, damaged cylinder walls, or valve problems, which can affect engine performance and reliability. Regular compression testing is essential for maintaining the health of the outboard motor.
What should the compression be on a 1984 70 hp evinrude?
The compression for a 1984 70 hp Evinrude outboard motor should typically be between 100 and 130 psi per cylinder. It's important that the compression is relatively consistent across all cylinders, with no more than a 10% variance between them. If the compression is significantly lower than this range, it may indicate issues such as worn rings, damaged pistons, or other mechanical problems. Always refer to the specific service manual for your model for the most accurate specifications.
What is the cylinder compression on a 1992 evinrude 25 hp motor?
The 1992 model, 25 hp Evinrude outboard will usually run between 120-140 psi. The main thing here is that there is no more than 10 psi difference between cylinder readings.
What is the cylinder compression on 1985 evinrude 25 hp motor?
The cylinder compression on a 1985 Evinrude 25 HP motor typically ranges between 90 to 120 psi. It's important to ensure that both cylinders have similar compression readings for optimal performance. If the readings are significantly lower, it may indicate issues such as worn piston rings or cylinder wear. Regular maintenance and compression testing can help ensure the engine is functioning properly.
What size fuel tank for Evinrude Fisherman 6 hp outboard?
A 3 gallon gas tank should be plenty for your 6 HP Evinrude with gas to spare. CRA Jr
What is the fuel mix for 1963 evinrude fastwin 18 hp motor?
24-1 until 1964, then 50-1
Horsepower rating of 64 olds 330?
Low compression, 2bbl carb = 230 hp High compression, 4bbl carb = 290 hp 1964 442 330 engine = 310 hp
How do you get fire on 115 hp 1996 evinrude motor?
How to get fire on a 115 hp 1996 evinrude motor?
What is the cylinder compression on a 1987 evinrude 60 hp?
The cylinder compression for a 1987 Evinrude 60 HP outboard motor typically ranges between 90 to 110 psi for each cylinder when properly tuned. It's important to ensure that all cylinders have similar compression readings, as significant deviations can indicate issues such as worn rings or cylinder damage. Always consult the manufacturer's specifications for the most accurate information and perform a compression test for precise assessment.
