twin 115 mercs

[Vince Malf]

I need some help folks.
On a recent outing, my son ran the gas tank dry.
since then both engines are hard to start, idol very rough and act and sound like they are not running on all cylinders. No power to get boat up on plane....
When you throttle up the engines throttle up then lose all power and die.......

What shoulld I check?

 

[Chris1956]

Re: twin 115 mercs

First check fuel filters. If that is not the problem, check compression on all cylinders. Post year and results back here.