Rough idle - Looking to replace Reeds

[Marc00]

1993 150Hp 2.5L Black Max 0D245738

Hi Guys, New to the forum. Been trying to solve a rough idle problem for several seasons now. I've had the motor 10 years and I run it in salt water. The previous owner removed the oil mixer so I have to run it at 50:1 all the time. I'm sure that's not helping but i think the problem is more than just the rich mixture. It runs great over 2000 RPM's but it just wants to choke out when i bring the idle down below 1000. I've tried the mercury fuel additives and they've helped a little. Ive also switched to Mercury synthetic oil which also helps but the low idle is still a problem. I've been dealing with it by tilting the motor when I need to go low so the prop is close to the water line which reduces the back pressure enough so the motor wont stall.

Anyway, after reading a bunch of posts here about changing the reeds and the reed blocks I want to give it a go. I've watched a few you tube videos and it seems pretty straight forward my only question is what to order. I doubt the motor has ever had the reeds changed so I'm leaning toward buying all new reeds and blocks before getting started. Are there gaskets, fuel and vacuum lines I should change as well? Anything else? And what are stuffers ? I see they are replaced with the reeds. Seems like TDR, CCMS and Boyesen are the way to go. Any advice on what I should order and from where would be much appreciated.

Thanks,
Marc

[JOE54]

you will need gaskets, some hoses possible, Loctite, stuffers move reed cages and up crankcase pressure smidge,use a single stage reed

[rgsauger]

I used the CCM reeds and noticed a definite better idle w my carb 200 merc

[EuropeanAM]

I recommend, use and sell TDR Reeds. Our Parts Department can assist you with everything you'll need, including gaskets, clamps, and reeds.

[ChrisCarsonMarine]

We manufacture reeds,crankcase stuffers for better bottom end and midrange,and have all the gaskets you will need,as well as tech help,You should not need reed blocks...305-394-3354,Chris

[Parnell]

We manufacture reeds,crankcase stuffers for better bottom end and midrange,and have all the gaskets you will need,as well as tech help,You should not need reed blocks...305-394-3354,Chris

I run chris carson reeds in my engine. You call them they help you with everything. Anything on install it’s like they are looking over your shoulder over the phone.

[silverbullet02]

Give the Carson’s a call, helped me out a lot on a motor I just did. Oil ratio has nothing to do with rough idle, especially at 50:1. Make sure everything else is right too, synchronization and all.