performance issue

[gofastsandman]

Originally Posted by Blue_Heron

Do yourself a favor and buy the Mercury Factory Service Manual, not one of the after market manuals. I've had both and there's no comparison. You can probably find one on ebay. You'll need your engine's serial number in order to get the right manual.

The throttle cable adjustment is at the motor end of the cable. To check if it's a throttle adjustment problem, remove the cowl, and then remove the front air box cover. With the air box cover off, you'll be able to see the carb butterflies. With the engine off, push your throttle all the way forward. If the butterflies aren't wide open, that's your problem. It could be a simple matter of adjusting the throttle linkage, or the throttle cam could have slipped out of adjustment.

The manual will tell you how to fix either problem. Or you can check it out and post questions here.
Dave

Pull hard on the new cable away from the motah and center it in the "adjustment window".
This will allow for strech. You may have to come back and micro manage it.

Cheers,
GFS

[NoBones]

On a V6 it could be a coil dropping out, stator or trigger...
It's hard to tell when you are running if you are dropping a cyclinder.
Also your bottom carb may have trash in it as it is the first to get
junk in it..

Do a spark check first, then head for the fuel system.
Old fuel line will break down with the crap we have for gas now.
The liner in some fuel lines just breaks apart and clogs everything!!

Just my 2¢ worth...

[DonV]

I'm with Ken on this one....go straight to the carbs. There are very tiny jets and fuel pathways in the carb that can get clogged up very easily, especially the high speed jets and it's then a "no go" on high RPM.