Fishinmagician78

Thanks for the info. You're a little too far away so I'm going to pass.

Where are you located? What size screen was mounted to this?

I also have one if RX 01s doesn't work out make me an offer. It's the large size.

A friend had an 18 ft tracker tundra painted at Goodrich in bath...came out really nice.

Ended up being the same problem old man had. I found one dead coil and one working intermittently, changed them out and back in business. Thanks to all that offered advice.

8 hours ago, old man said:

I have that same motor. I bought it new in 2008. About 3 years later it started acting like that. Two coils were bad. Mercury gave me six new ones under "good will". I guess they knew they had some bad ones out there. Never had a 

Thank you. My engine is the same year. Was yours an intermittent problem when it happened? I thought it may be a bad coil when it happened but everyone told me they usually just go bad and won't come and go. 

5 minutes ago, shinintimes said:

x2 on the carbs my buddy had to clean his carbs every year because of the ethanol in the fuel now he uses stabilizer every time he gets fuel no problems

It's an efi motor and always treat the fuel and run mercury quickkleen multiple times a season.

5 minutes ago, Sk8man said:

I'd have a competent marine tech put it on the diagnostic tool and see what codes come up. The computer in it records everyhting from how the engine was broken in to how many times the alarms have gone off to thermostat temp readings etc. so you should be able to get a better idea where to start.

Any idea who in the corning area would be considered competent? I'm familiar with most of the marinas but not sure where to start. The last two I have been to definitely would not be described as competent!

8 minutes ago, MeanMachine said:

Did you replace fuel lines?  I had a similar issue before where the motor would bog down due to old fuel lines cutting the flow of fuel.

Fuel lines were replaced with ethanol safe lines and VST filter was changed two years ago. 

11 minutes ago, lakebound88 said:

Possible computer issue. Intermittently failing or weak power supply? Although an outboard, there's gotta be some elimination tests.
 

It has the smartcraft technology which I would assume is computer scanable to check for codes?

1 minute ago, lakebound88 said:

Start with basic tune up and go from there. 
 

Did all that and there was no improvement.

2008 150 efi starts right up but idles a little rough...nothing major. Just barely advance the throttle and it idles worse and sometimes will stall. Sounds like it's loading up but starts right back up and ran at mid to high rpm fine. Last trip it bogged down and wouldn't plane the boat, after playing with the throttle a little it took off and ran fine until it was turned off and restarted then same bogging but never corrected itself. Boat sat at a marina for 2 weeks and i was told they couldnt get it to act up so just take it and see what happens. They claim compression was fine, I have no idea if it was tested, and that it probably is a sensor. Any thoughts? Or good mechanics in corning area?

The gate is stuck open and requires divers to correct the problem. The water level is very low with approximately 6 inches to 8 inches of water where the canal opens into lamoka. The beaver lodge on that side is also about 3/4 of the way across the canal so navigating is possible but tricky.

Thanks guys!

Anyone know the thread dimensions of a mercury drain plug? I'm thinking 3/8-16 but don't want to get the wrong one.

Thanks for the info guys. I've read that keenserts are slightly better than helicoils. Any thoughts? Also, is it possible to thread them deep enough that the plug and gasket still fit flush against the sealing surface? Will I have to flush the lower unit to get shavings out? Splitting the case probably isn't an option. Since the threads in the lower unit go much deeper than the length of the plug I only lost the last two or three threads. Could I just thread in a keen sert using the threads that are still there and then put the plug in? Would that be strong enough to hold?

Also, I don't know any machinists so if anybody knows any in the Corning area that would also be appreciated.

I have a 115 mercury 2-stroke outboard that has a stripped vent hole in the lower unit so the plug won't tighten. A marina told me they wouldn't touch it because it wouldn't be factory spec and if the repair didn't work they could be on the hook for a new lower unit. Boat is located in Corning so looking for somewhere reasonably close to do the repair. This is an older motor so buying a new case is out. These are the three options I think would work.

Option 1: have the hole welded and re-tapped for the plug

Option 2: tap to a bigger plug if possible

Option 3: have the plug welded in and forget about it. (This outboard has two holes on top, a vent and a level check) the stripped one is the vent and only slightly higher than the level check plug so would it really matter if I sealed it?

If any of those are feasible I would love to know what the best option is. I also have no idea where to get the repair done. Marina? Machine shop?

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I have a large happy troller trolling plate located in Corning NY. $50