1995 evenrude 70hp reeds

[River Explorer]

Got this motor on a boat project. I mainly work on 25hp down but I know these can be great motors. Have it a short start and sounds like I have a miss. Doing a full tune in the morning . I noticed bottom and mid cylinder reeds had a couple that weren't completely flush. Just barely enough to where I see a difference in the other ones. Anything I should do while my carbs are off? I have ever had to mess with reeds on a motor I've had.

 

[flyingscott]

I would leave the reeds alone for now. A small gap can be normal and the crankcase pressure will usually push those closed. Are you running on muffs or in the lake? Have you done a spark and compression test? That motor has low speed adjustable needles on it.

 

[racerone]

Reed valves themselves rarely cause a problem.----You already said you have never had to " mess " with them.

 

[River Explorer]

It's on muffs at the moment. I've seen where back pressure in the water will make a difference. I just didnt want to lean out a cyl. I'm in the process of replacing transom. Heading out in a few for a compression test and plug change. Checking spark as well. I'm pretty sure one low speed idle is off quite a bit.

 

[River Explorer]

Racerone. I was meaning I haven't had to touch reeds on any motor I've had. Just didn't know what was acceptable for reeds to look like.

 

[flyingscott]

It's on muffs at the moment. I've seen where back pressure in the water will make a difference. I just didnt want to lean out a cyl. I'm in the process of replacing transom. Heading out in a few for a compression test and plug change. Checking spark as well. I'm pretty sure one low speed idle is off quite a bit.

Running on muffs automatically creates a lean condition because there is no back pressure.

 

[River Explorer]

Thanks and noted.

 

[River Explorer]

Turned out to be a great motor. Someone removed the thermostat and it never would run right.