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[jonnycomeeatabite]

25 hp wont start 1975

[Joe Reeves]

Originally posted by jonnycomeeatabite View Post

25 hp wont start 1975

You need to enter more information than that!

1 -When is the last time the engine ran normally?
2 - Has anyone been working on it lately?
3 - What is the compression psi reading of each cylinder?
4 - What spark plugs are you using (type and designation numbers)?
5 - With the spark plugs removed, the spark should jump a 3/8" gap with a strong blue lightning like flame... a real SNAP! Does it? (Do not use the spark plugs to check the spark... a waste of time! Testers available at auto parts stores.
6 - Is this engine new to you or have you owned it for awhile. We need some history on the engine.

Let us know what you find