exhaust back pressure

[Double Trouble]

I clean the exhaust back pressure nipple twice a year but how do you tell if the exhaust back pressure diaphram and hose is clear?

[Double Trouble]

I clean the exhaust back pressure nipple twice a year but how do you tell if the exhaust back pressure diaphram and hose is clear?

I think I will buy a new one install it and see if any differance.I will open the old one up and see what it looks like inside.

[Zpilot]

Curious what is your motor doing or not doing that you think you need to install a new exhaust back pressure diaphragm?

[Double Trouble]

Curious what is your motor doing or not doing that you think you need to install a new exhaust back pressure diaphragm?

Exhaust nipple is usually pretty well clogged when I check it but after cleaning it doesnt seem to make a difference in performance.

[mactlman]

i use amsoil and carbon guard and my sensor never looks dirty or clogged?

[Zpilot]

Exhaust nipple is usually pretty well clogged when I check it but after cleaning it doesnt seem to make a difference in performance.

Curious what performance issue you have that you think changing the back pressure diaphragm will remedy?

[Double Trouble]

Curious what performance issue you have that you think changing the back pressure diaphragm will remedy?

hard cold starts.

[Evinrude57]

The diagnostic software will tell you if its clogged or not, if its clogged the back pressure reading will be stuck on one value.

[Double Trouble]

The diagnostic software will tell you if its clogged or not, if its clogged the back pressure reading will be stuck on one value.

Thanks will check in the spring.

[Zpilot]

For the board experts, does the following motor have a exhaust back pressure diaphragm? S/N is 05116699

mod#E225DHLSDF. I also have hard cold starts as Double Trouble mentioned he has and cleaning/replacement of the exhaust back pressure nipple did not have any affect. Thanks in advance.

[ChampioNman]

Yes it does, it is located on the powerhead adapter plate right behind the lower engine cover mounting stud.

[Zpilot]

Thanks ChampioNman. I looked on the evinrude/johnson parts web site and cannot find this part. If you could point me to the correct page or P/N that would be appreciated.

[ChampioNman]

Item 2

http://www.marineengine.com/parts/jo...+Housing+Inner

[Zpilot]

Item 2

http://www.marineengine.com/parts/jo...+Housing+Inner

I think there is a miss understanding, I am asking about an exhaust back pressure DIAPHRAGM, not the item #2. Sorry If I was confusing with my request.

[Bassmeister]

Follow the hose up from the nipple through the wire harness. It will be at or just above the #1 cylinder.....black round disc shape with a hose on the other side going to the EMM. It is approximately 2" in diameter 1/2' thick....

[Zpilot]

Follow the hose up from the nipple through the wire harness. It will be at or just above the #1 cylinder.....black round disc shape with a hose on the other side going to the EMM. It is approximately 2" in diameter 1/2' thick....

[ChampioNman]

The ETEC doesn't use the diaphragm.

[Bassmeister]

Well chit....I digress.....

[Double Trouble]

The ETEC doesn't use the diaphragm.

Back to my original question is there anyway to tell if it is clogged.