96 mercury 200 efi idling to high

**Calvin1013** · 10-22-2018, 08:04 AM

I am in breaking period right now and my Merc is idling to high. I am ordering a new tach. Even with gauge being crazy I know it is idling to high. What should I check?

**rock** · 10-22-2018, 10:10 AM

Trigger may not be returning to stop. Air leak on the intake side. Timing.

Rock

**Calvin1013** · 10-22-2018, 10:22 AM

Ok the tach was acting up before I rebuild the engine. I will check the intake make sure I didn’t mess up gasket or something.

**rock** · 10-22-2018, 11:33 AM

Once I left off the rubber gasket that surrounds the intake that the front cover sits against and the idle was more like wfo. Good luck.

Rock

**Calvin1013** · 10-22-2018, 02:27 PM

Yea I left that off when I was putting it back together. Had to take back apart and put it on.

**Merc 2.5** · 10-22-2018, 04:15 PM

Originally Posted by rock

Once I left off the rubber gasket that surrounds the intake that the front cover sits against and the idle was more like wfo. Good luck.

Rock

Which gasket are you talking about. Only gasket I had was intake gasket ?

**Calvin1013** · 10-22-2018, 04:40 PM

The rubber that goes between the cover and the housing the injectors are in. Maybe that’s called air box. There is also a gasket between air box and reeds.