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 clean the exhaust back pressure nipple twice a year but how do you tell if the exhaust back pressure diaphram and hose is clear?
Twin 200 2005 Mercury Optimax Engines
1B191661
1B160290
Last edited by Double Trouble; 01-09-2020 at 05:31 PM.
Twin 200 2005 Mercury Optimax Engines
1B191661
1B160290
Curious what is your motor doing or not doing that you think you need to install a new exhaust back pressure diaphragm?
Twin 200 2005 Mercury Optimax Engines
1B191661
1B160290
i use amsoil and carbon guard and my sensor never looks dirty or clogged?
2022 z519 cup 225 merc 4s ser # 3B210484. 2--hds12 live units. 2 poles, atlas plate, ghost, hamby's, active target, merc digital gauges
2002 basscat pantera 3 (dad bought new) sold 8-2-22
2000 stratos 20 ss (bought new) 200 hp Rude ficht great boat/motor sold 11-21
pulled by a 2500HD Denali
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Twin 200 2005 Mercury Optimax Engines
1B191661
1B160290
The diagnostic software will tell you if its clogged or not, if its clogged the back pressure reading will be stuck on one value.
Twin 200 2005 Mercury Optimax Engines
1B191661
1B160290
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.
Yes it does, it is located on the powerhead adapter plate right behind the lower engine cover mounting stud.
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.
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....
The ETEC doesn't use the diaphragm.
Well chit....I digress.....
Twin 200 2005 Mercury Optimax Engines
1B191661
1B160290