1991 Evinrude 15hp cooling 205 degrees

[usteel]

Re: 1991 Evinrude 15hp cooling 205 degrees

Thanks for the answer. I just thought that without a T-stat there may be less water pressure in the system and less power in tell tale as a result. My friend had suggested running without the T-stat but I will heed your advice and leave it in. Thanks

 

[Daviet]

Re: 1991 Evinrude 15hp cooling 205 degrees

It's OK to run your engine without a thermostat for testing, but once you have solved your problems it would be wise to install a thermostat.

 

[usteel]

Re: 1991 Evinrude 15hp cooling 205 degrees

thx Daviet...I have learned a lot just following along. Cooling systems is one area that I did not understand too well. One last question. The tell tale on my evinrude 15 HP 4 stroke E15FREUA 1997 runs right through the base of the carburetor where it connects to both sides of a valve body where water obviously flows in one side and out the other before it exits the pee hole. What the heck is this valve body for and why is the tell tale hose routed right though it on the carb?
Thx

 

[Daviet]

Re: 1991 Evinrude 15hp cooling 205 degrees

I can't ansewer that question, I have never even seen a 4 stroke. I am sure someone will come along that will ansewer your question.

 

[usteel]

Re: 1991 Evinrude 15hp cooling 205 degrees

Anyone help with this question????
First of all Thx Daviet for all the advice...I discovered with some research that the valve body I'm asking about (above) is the accelerator pump on this model carburetor that works with a rod extending from the linkage to the spring loaded diaphram at the base of the carb. The two nipples shown on part 27 are where the in and out of the tell tale hose is connected. Why would water be routed through there and can this hookup to the accelerator pump in any way cause a weak water flow from tell tale.

In the attachment this pump is number 27,28,29,and 30

 

[jay mendoza]

Re: 1991 Evinrude 15hp cooling 205 degrees

Daviet has a good point: The tell-tale is BEFORE the thermostat, so the Tell Tale restriction is not related to the thermostat. I'm willing to bet you have some chunks of debris/corrosion in the exhaust cover where the tell tale outlet barb fitting is. See my post above about how we found this same problem on a Johnson Super 10 .

 

[usteel]

Re: 1991 Evinrude 15hp cooling 205 degrees

THX very much...end of season this year this engine definitely gets stripped and cleaned. No cooling issue next year for sure.

 

[usteel]

Re: 1991 Evinrude 15hp cooling 205 degrees

I discovered with some research that the valve body I'm asking about (above) is the accelerator pump on this model carburetor that works with a rod extending from the linkage to the spring loaded encased diaphram at the base of the carb. The two nipples shown on part 27 are where the in and out of the tell tale hose is connected. First, why would water be routed through there and second, can this hookup to the accelerator pump in any way cause a weak water flow from tell tale.Do I need to check it somehow?

In the attachment this pump is number 27,28,29,and 30

 

[bktheking]

Re: 1991 Evinrude 15hp cooling 205 degrees

Usteel, I just pulled a pic of the carb for your exact model number and the diagram is different, there is no accelerator pump in the diagram.

 

[usteel]

Re: 1991 Evinrude 15hp cooling 205 degrees

Thx BKTHEKING for the response, but the carb on my E15FREUA 1997 Evinrude 4 stroke has an accelerator pump as pictured in the attachment in my previous post and the tell tale hose attaches to each side of part no. 27. I know all the schematics out there show a different carb but the tech support at Evinrude assured me that this model has such a pump and I checked and it does. Bit of a mystery. Do you know why the tell tale attaches to the pump and if this can cause a restricted water flow for any reason.

 

[mikesea]

Re: 1991 Evinrude 15hp cooling 205 degrees

Guys,this is exactly why we need to advise people to start their own thread.I have just gone nuts trying to figure out why I never saw the carb.USTEEL posted.Finally going back ,I see where the original post was "hijacked"surely with no disrespect,but all the same,you need to start a post for your own help,others wont see your hijack.So happens I replied on here a while back ,and,I like to go back to see if he problem was fixed on replies I posted.USTEEL this was for a 2 cycle with a cooling problem,your carb trouble will miss out on replies ,unless you post your own problem if you havent done so already.

 

[usteel]

Re: 1991 Evinrude 15hp cooling 205 degrees

Thx Mikesea..got a bit carried away I guess. Will try starting a new thread if I can figure out how.
Thx

 

[jeff_smith_0423]

Re: 1991 Evinrude 15hp cooling 205 degrees

Thx Mikesea..got a bit carried away I guess. Will try starting a new thread if I can figure out how.
Thx

At the top of the forum, click "Thread Tools" and "Post a new thread"

 

[mikesea]

Re: 1991 Evinrude 15hp cooling 205 degrees

usteel,no problem,just want you to get the best of service,to start a post,simply click on the box that says create a post ,its the same as a reply ,but you start the topic,good luck