How much compression should a 2004 ktm 250sx have?

Answer 1

A 2004 KTM 250SX should typically have a compression ratio of around 180 to 200 psi when the engine is in good condition. It's important to note that variations can occur based on factors like engine wear, modifications, and maintenance history. If the compression is significantly lower than this range, it may indicate issues such as worn piston rings, a damaged cylinder, or valve problems that need attention. Regular checks can help ensure optimal performance.