1995 Ocean Runner Problem Help

ESBOATER

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Jul 6, 2011
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I recently had my 1995 Oceanrunner 175 hp in the shop for a tune up and to have a new trailer installed under my boat. I was only experiencing a slightly rough idle. I asked the boat mechanic to change the lower unit oil, replace the recor filter, check the compression, and adjust the rough idle. When he worked on the motor he noticed that two of my carbs were leaking. So he put carb kits on 3 of the 6 carbs and cleaned the other 3. He said that the gaskets were bad and the needles were about disintegrated. When I took the boat out the next day I immediately noticed that the motor seemed to be bogging at low speed and seemed to want to shut off at idle. Once I pushed through the bogging it ran fine at medium and top speed like usual. It also seemed to sound a little different (quieter) at the higher speeds. After 20 min of running I stopped to anchor and had the same problem with the bogging and low idle. After 3hours of anchor with the motor slightly tilted because of shallow water I went to return to the dock and the motor would not start. It seemed to be either not firing or not getting gas. After 15min of pumping the ball and choking I raised the hood and did not smell any gas. Gas was getting to the motor because when I took the fuel line off on the motor side of the racor gas shot everywhere. After 20 min it finally started but continued to bog, etc. It even shut off when I put it in gear once. When I got back to the dock I could not get the boat on the trailer with the motor because of bogging and shutting off when I was putting it under a load to push the boat on the trailer. I took it back to the mechanic and he is not even looking at the carbs just the cylinders. One of the cylinders has wear and he is saying that all of the problems are coming from this. He said that he did an air test and air blew through the cylinder and out the carb. I really don't think that this cylinder is the problem. Yea, it's worn and will probably need attention soon, but has probably been in that condition for some time. I think that I have a gas/carb issue that?s due to the rebuild. When started in the yard it seems to run fine. It only seems to have problems while in the water under back pressure. I also recently replaced the plugs and did not notice much fouling. My mecanic has had me go through a crazy stating procedure for the past 2 seasons. I have to pump up the ball, turn on the key, push in the choke, slighly massage the ball three times, and start the motor. I know this sounds foolish but the motor starts every time. Otherwise I risk having trouble starting. This proceedure only needs to be done when the motor has sit up for over 2 hours, otherwise it starts right up. Help
 

Chris1956

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Mar 25, 2004
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28,105
Re: 1995 Ocean Runner Problem Help

From your message, it would seem that you have a poor quality, yet headstrong mechanic. I would take a compression test and a sperk test and post back the results. Whereas I think it is the carbs also, let's rule out compression and ign as an issue.
 

daselbee

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Jan 20, 2009
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2,765
Re: 1995 Ocean Runner Problem Help

Agree with Chris. Something is wrong with many of the details you provided from him.

Air test? Air blowing thru from the cyl out the carbs? If that is true, you now have some involved problems.

However, the starting procedure is a valid, yet inconvenient, way to start it. It should not need this, tho, unless cold as in the first start of the day.
Get the comp and spark results posted.
 

ESBOATER

Cadet
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Jul 6, 2011
Messages
13
Re: 1995 Ocean Runner Problem Help

Compression test was done two seasons ago: right side top to bottom 95, 105, 100 and left side 90, 100, 95. It was tested last week and was right side 90, 95, 100 and left side 80, 95, 95. The top left side is the cylinder with the leak and sightly loose piston. Notice the slight drop in compression. I will get the spark test results posted. I went by this am and they had the heads off replacing the gaskets and boring out one of the head bolts that they rung off. They still seem to be stuck on the low compression cylinder being the whole problem????? I also noticed oily gas running down the right side of the shaft. It seems to me that the bogging (starving for gas) would come from a carb issue. It's hard to understand being that I just was running it 3/4 throtle to the dock. Before I took it in, this motor was running fine other than a slightly rough idle. Thanks so much for you attention.
 

ESBOATER

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Jul 6, 2011
Messages
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Re: 1995 Ocean Runner Problem Help

Spark tested ok. It had a clean blue spark on all cylinders. Motor was hard to start, but when you put your hand over one of the carb intakes it started right up. Gas is getting to the carb bowls but no further.
 

Chris1956

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Mar 25, 2004
Messages
28,105
Re: 1995 Ocean Runner Problem Help

OK, Now I am really confused. Do you have it at a mechanic? Is it the same one as before?

Your compression is acceptable, the spark test shows OK. Putting a hand over a carb intake simply chokes the motor. If this fixes the issue, it it likely the carbs idle circuit is clogged or dirty or the enrichener is not functioning properly.
 

daselbee

Commander
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Jan 20, 2009
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2,765
Re: 1995 Ocean Runner Problem Help

OK, Now I am really confused. Do you have it at a mechanic? Is it the same one as before?

Your compression is acceptable, the spark test shows OK. Putting a hand over a carb intake simply chokes the motor. If this fixes the issue, it it likely the carbs idle circuit is clogged or dirty or the enrichener is not functioning properly.

Yeah I am confused too. Last I read the heads were off it at the shop. There have now been many variables added to your problem.
Since it was running good before you took it in, I would rule out any cylinder issues. They probably messed up the link and sync when "fixing" it.
 

ESBOATER

Cadet
Joined
Jul 6, 2011
Messages
13
Re: 1995 Ocean Runner Problem Help

Yes, its the same mecanic. I have been telling them all along that its a carb issue and to leave the cylinders alone. I will pass the info along. This guy has been a Johnson/Evinrude dealer for over 30 years. Why would the motor run good at med/top end but bog at low speeds? Would the idle circuit, enrichener, link and sync cause the issue? They are putting carb kits in the other three today. I found out that the first three were not all on the same side. I thought of taking it to another mecanic but decided not to because they are tryng to fix what was created.
 

daselbee

Commander
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Jan 20, 2009
Messages
2,765
Re: 1995 Ocean Runner Problem Help

The idle circuits and the link and sync can cause bogging. The "enrichener" or primer solenoid cannot, unless it is leaking gas through, but the symptoms would likely be different.
Primer solenoid leaking can easily be tested. Just carefully clamp off the input gas line to the primer solenoid with a small vise grip. If the problem goes away, inspect the primer solenoid system.

Best of luck to you. It really sounds as if you will be getting one whopper of a bill. I hope not, and that they eat the extra charges that it appears they caused.
 
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