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Captain
Posts: 68
Registered: ‎10-18-2011

Tapping noise

So went to use the boat the other weekend, and lo and behold, upon start up there is a noticeable tapping noise coming from the port motor. (That being a 2008 Etec 200HO). 

Now, intitially, one would think that was maybe a big end bearing or similar giving way, however, this was put aside when the noise abated once the engine revs were increased. Now at idle, the noise is there and there is a noticeable miss from the engine as well. Could it be a defective injector? What are people' 'thoughts?

I will be putting the motor on diagnostic software this weekend but I am interested in what others think.

I may also note that this motor has since installation second hand, been a problem with overheating. It does not like running between 500 and 1800rpm. It will increase to above recommended running temperature if left in that zone for any length of time. Above 1800rpm, and she happily drops to 61degC. I am leaning toward blocked water galleries in the head for that one though.

More interested in the tapping noise.

Admiral
Posts: 6,140
Registered: ‎07-14-2011

Re: Tapping noise

[ Edited ]

 

A tapping noise could be a number of things and it's best to have a trained technician check it out. You can sample the gearcase oil looking for metallic dust in the oil  or metal shards on the drain screw magnet. Both items indicate gearcase component damage.  A small amount of "fuzz" on the magnet is normal, but not chunks or slivers.

 

The overheating can be also a number of things. As the dealer to check water pressure at all speeds, thermostats, and the pressure relief valve situation. Sometimes larger water inlet screens are needed.

***************


"There is never just one thing wrong with a boat";
                                                 -- Travis McGee, main character in a book series by John D. McDonald


***************
The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. If you elect to do it yourself, be sure to use caution, common sense, and to observe all safety procedures in the vicinity of gasoline, moving engine parts, high temperature components, heavy items, and electrical or ignition systems.

The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation or a technique, enlist the services of a factory trained technician.
Captain
Posts: 68
Registered: ‎10-18-2011

Re: Tapping noise

Hi Bill,

 

The tapping noise is coming from the motor. It is prevalent at idle with the motor out of gear. Upon accelerating the engine, the tapping noise disappears. 

The water pressure may be an issue however, I don't have a gauge connected to these motors. The thermostats, Orings and housing top covers have all been replaced. The pressure relief valves aren't an issue as they obviously work as the temperature comes back to normal once the motor reaches 1800rpm and above. 

I will put the diagnostic software to the test on the weekend and disable each injector individually and see if the tapping noise stops.

Captain
Posts: 68
Registered: ‎10-18-2011

Re: Tapping noise

On a post note, I did run the engine without the thermostats installed and found the temperature to not run higher than 45degC. Yet on doing a static test on the thermostats found they opened quite easily within the specified range. Waterflow through the thermostat housing also is good when running the motor with the housing top cover removed.

Admiral
Posts: 6,140
Registered: ‎07-14-2011

Re: Tapping noise

What is the engine serial number?

 

 

***************


"There is never just one thing wrong with a boat";
                                                 -- Travis McGee, main character in a book series by John D. McDonald


***************
The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. If you elect to do it yourself, be sure to use caution, common sense, and to observe all safety procedures in the vicinity of gasoline, moving engine parts, high temperature components, heavy items, and electrical or ignition systems.

The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation or a technique, enlist the services of a factory trained technician.
Captain
Posts: 68
Registered: ‎10-18-2011

Re: Tapping noise

Hi Bill,

it is E200HCXSUC. Ser, no 05157596

Admiral
Posts: 6,140
Registered: ‎07-14-2011

Re: Tapping noise

 

 

Your motor is a 2007 model, not a 2008.

***************


"There is never just one thing wrong with a boat";
                                                 -- Travis McGee, main character in a book series by John D. McDonald


***************
The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. If you elect to do it yourself, be sure to use caution, common sense, and to observe all safety procedures in the vicinity of gasoline, moving engine parts, high temperature components, heavy items, and electrical or ignition systems.

The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation or a technique, enlist the services of a factory trained technician.
Captain
Posts: 68
Registered: ‎10-18-2011

Re: Tapping noise

You are quite correct.

Captain
Posts: 68
Registered: ‎10-18-2011

Re: Tapping noise

Bad Habits.jpgThe beast

Captain
Posts: 94
Registered: ‎09-12-2016

Re: Tapping noise

Nice looking boat!