wellcraft will not run please help

[badbowtie]

I just bought a 85 wellcraft cuddy cabin with the 350 and a mercrusier out drive.
I took the boat to the lake saturday for the first time and backed it in the water and went to try to start it and nothing just cranks and cranks messed with it on the lake for about 4 hours. Finally just loaded back on the trailer buy hand and pulled it all most all the way out of the water and just to were the inlinet fins on the out drive were in the water and tried it again. The boat started right up backed it back in the water let it run for about 15 minutes then tried to shut it off and restart and nothing. So pulled out to head home while I was straping it done we noticed the black slinky hose that the exhaust runs through was not connected to the out drive. So headed home and reinstalled that and the hose clamp. Tried to go back today and same thing backed it in the water and nothing it will not start just cranks and cranks. Pulled up some and fired right back up. Backed in shut it off and nothing will not restart at all. I need some help my fiance is getting very upset with me that I bought a boat that does not work. Thanks

 

[Haut Medoc]

Re: wellcraft will not run please help

Is the choke operating properly?.....
Describe your starting procedure.....
Do you pump it twice, then set the throttle @1/3 open in the 'throttle only' position?......
It is not fuel injected, it has to be started differently....
If the above procedure does not work, open the throttle fully & be prepared to back it down when it catches....
I reccomend that you invest in a pair of muffs so you can run & do diagnostics in your driveway, not at the boat ramp......​

 

[Don S]

Re: wellcraft will not run please help

I need some help my fiance is getting very upset with me that I bought a boat that does not work.

Actually, I think you bought a boat that is afraid of the water

What else did you do when you pulled it forward a little. Did you change the dirve position up or down? Did you move the throttle and shifter different. Anything like that?????????

 

[badbowtie]

Re: wellcraft will not run please help

I have followed that procedure to start it many of times I have tried full throttle I have tried everyway I could think of to get it to start. I have a set of muffs and on them in my driveway it fires right up everytime. It just will not start when I back it all the way done into the water. That is what has me so confused I can't try to figure out what is wrong in my driveway.

 

[Coors]

Re: wellcraft will not run please help

It sounds like the change of the angle of the boat is changing something around the fuel pick-up. Perhaps water or crap?

 

[Haut Medoc]

Re: wellcraft will not run please help

It sounds like the change of the angle of the boat is changing something around the fuel pick-up. Perhaps water or crap?

Now that we are getting more of the story, I agree with Coors......​

 

[badbowtie]

Re: wellcraft will not run please help

I have left the throttle and the the iut board in the same spot when pulling it up some to start it. I have even unloaded the boat and swam it over to the dock and had it sitting just like it would on the lake and still can't get it to start which is just like it sits on the muffs like in my driveway.

 

[Don S]

Re: wellcraft will not run please help

I would think that even if it was a fuel problem, it would still start for a few seconds just because of the fuel in the carb. This is a wierd one.

When you have it in the water and it won't start, did you check it for spark? Is there power to the coil + terminal with the switch on?

 

[badbowtie]

Re: wellcraft will not run please help

I have not checked for spark while it is in the water and will not start because like I said I can pull it up about 10 feet and will fire right up back it back in and it
will stay runing then if I shut it off. And try to restart nothing just cranks and cranks. She keeps telling me I bought a land yahct.

 

[Don S]

Re: wellcraft will not run please help

Sounds to me like you will have to put it in the water to troubleshoot it.

 

[Reel Poor]

Re: wellcraft will not run please help

I would guess the exhaust system is restricted. With the boat in the water there is additional back pressure on the engine created by the water and will not allow the engine to start. With the boat out of the water the back pressure is decreased just enough to allow the engine to start. I would say if you cranked the engine then backed it into the water and tried to go for a ride that it would not perform right either. You need to check your exhaust flappers. Pull the drive and look into the exhaust outlet. Also pull the exhaust elbows and see if the flappers are still there.

 

[badbowtie]

Re: wellcraft will not run please help

The exhaust system is the only thing I could think of I just looked through my seloc manual ( I know junk) I can't find out exactually were the flappers are I wanted a diagram of were they are before I just keep taking things apart and get no were also how many of them their are I am not really in the mood to pull the whole outdrive all them hoses and clamps up their look like no fun I only had to get the bottom one on and was hard enough.

 

[Reel Poor]

Re: wellcraft will not run please help

The flappers should be in the top of the Y-pipe. You'll probably have to remove the risers to get the elbows off.

As for the drive. There are no hoses and clamps to remove. Place the throttle lever in forward gear, remove the trim rams from the drive at the rear mounting point, remove the six nuts holding the drive to the bell housing, then slide the drive out of the bell housing. weight is about 80lbs and might be easier with a helper.

Look here; http://www.boatfix.com/merc/Servmanl/6/6A2R3.PDF

 

[badbowtie]

Re: wellcraft will not run please help

well I just pulled both elbows of and their are flapers in both of them.

 

[Reel Poor]

Re: wellcraft will not run please help

That doesn't mean there is not one stuck in the throat of the Y-pipe. Someone could have replaced the origionals with new ones and did not bother to locate the old ones.

 

[badbowtie]

Re: wellcraft will not run please help

If their was a old one stuck in the y pipe then it wouldn't run on land with muffs would it I would think that wouldn't matter on land or in water is their a digram showing were the other flapper is their is three of them correct one down buy the out drive the two that are in the elbows are higher than the water level when sitting in the water.

 

[Reel Poor]

Re: wellcraft will not run please help

No when running on the muffs there is no water in the drive and exhaust system until the engine starts.

Do you have a serial number?

 

[badbowtie]

Re: wellcraft will not run please help

I found two differnt numbers on the outdrive one on the mount that is on the transom it is 6791056 the other number is on the out drive it is 6887719

 

[badbowtie]

Re: wellcraft will not run please help

Okay well I pulled the two arms off and removed the six nuts to remove the outdrive It was full of water milky oil that came out I can look up in the exhaust and can't see anything as far as I can see in I can see were it splits of both ways. Is their supposed to be a flapper somewere down their that I can't find or am missing.

 

[Reel Poor]

Re: wellcraft will not run please help

No other flappers, just the two, one in the top of each side of the Y pipe. Be sure to look in the exhaust passage in the drive also. If you don't find any restriction in the exhaust I think I'll agree with Don S, it's allergic to water. Where was the milky oil, in the drive or in the driveshaft bellows? If it was in the bellows you should also drain the drive itself to see if there is any water in it. The water probably damaged the gimble bearing and u-joints too.