1996 , 9.9 compression

[MH Hawker]

I am looking into buying a mariner 9.9 and was wondering what the new and rebuild point compression is

 

[JB]

Re: 1996 , 9.9 compression

The compression you would measure depends on your guage, several conditions and your technique, Hawker.

Because it is a rope start, compression above about 60-70psi and the cylinders closely (+/- 10%) matched indicates a sound engine.

 

[MH Hawker]

Re: 1996 , 9.9 compression

the one i am looking at is a electric remote start, and i normaly open the carb up and run it through at least 4 times and i normaly do a wet and a dry test and ty red

 

[JB]

Re: 1996 , 9.9 compression

With a fully charged battery, and if done correctly, should get up to 90psi or better.

Opening the carb is a waste of time. Go to the Engine FAQs to find instructions for a correct compression test.