Home › Forum › Ask A Member › 1987 Johnson 9.9 upper crank seal › Re: 1987 Johnson 9.9 upper crank seal
May 2, 2018 at 11:48 pm
#75242
If the mag plate and top of the motor are wet, you can be quite sure it’s a leaky seal. Here’s how I test them with a bit of oil or fuel mix:
