Compression test

[tie_one_on]

I'm going to perform compression tests on my twin 302 Ford Pleasurecraft engines. Here's how I normally do it. Is this correct?<br />1. Remove all spark plugs<br />2. Open carb to full throttle<br />3. Remove wire from coil to center of distributor<br />4. Test each cylinder<br />Oh, forgot to mention, I run the engines up to operating temp before testing. <br />Thanks

 

[KaGee]

Re: Compression test

Sounds ok. Cylinders should be approx within 10% of each. <br /><br />Do you have a problem or just curious??

 

[Don S]

Re: Compression test

Here is a service bulletin put out by Mercruiser on how to do a proper compression test.<br /><br /> Compression Test

 

[tie_one_on]

Re: Compression test

KaGee - new boat to me just checking everything out before launching. <br />Don S - thanks for the link. You're great for that kind of stuff. GREAT HAVING YOU BACK!!!!

 

[KaGee]

Re: Compression test

Good luck! Hope all checks out fine.