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  1. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    Here are a few more graphs . . . Clearly the starboard engine shows the riser temp coming down and then going up whereas the port just climbs . . . Water pressure and ECT look OK. File names denote the engine(Port/Stbd) If it is nice and sunny tomorrow, I'll clean out the Port and starboard...
  2. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    water was 76-78˚F
  3. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    Update for today . . . I checked the following . . . Port engine: Coolant in H.E. = full (both engines were & are full) Poppet valve: I removed the cover of the valve assembly . . . no build-up or anything and the spring action of the valve seemed normal . . . I could open the valve with a...
  4. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    Also, I've been wondering what these things attached to the fittings were . . . . Apparently a check valve (8M0103408) . . . I guess it is to allow the raw water hose(s) to drain while the engine is not running?
  5. tpenfield

    454 mag mpi chuggles/stalls

    Thanks . . . thinking it may be helpful. Do you have the recording file from before? Could just use that to make the TPS graph.
  6. tpenfield

    454 mag mpi chuggles/stalls

    Got a graph with the TPS reading during this recording?
  7. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    I've grabbed a few images from the Internet that show the parts under discussion. . . Above is the rear view of the engine, showing the P/S cooler and poppet valve. It looks like water to the risers branches off at the back of the engine via the 'Y' pipe (#12 - 8M2003728). So, the 'strainer'...
  8. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    Are you pulling an all-nighter? My California peeps will be here next week, so hoping to have the boat operational for their visit. And yes, the port side of the port engine is nearly impossible to get to. I might practice on the port side of the starboard engine first, as that is an easier...
  9. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    I think I found in this picture where the 'strainer' is located. . . I'll take a look and see if that is clogged, etc. If not, then I'll take a look at the poppet valve.
  10. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    Thank you for the reply . . . I will look into the 'strainer assembly', as that may have some residual blockages from the 5 years of operation prior to my putting sea water strainers in before the sea water pumps.
  11. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    This might be a question for @Fun Times , @muc , and a few others, but all are welcome. . . This season I am seeing that the port engine is going into guardian mode (3000 RPM limit) when I run the engines above 3600 RPM. This has happened a couple of times, and generally the engines will run...
  12. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    I’m getting exhaust over heat warnings on anything above 3600 RPM - so I assume that the risers will need attention.
  13. tpenfield

    Mercruiser engines and sacrificial anodes

    Voice of experience here . . . I am on my third boat in salt water having run & kept boats in salt water for the past 20 years. There are 2 things going on with salt water (that is more so than fresh water) There is galvanic corrosion and there is rust First Galvanic Corrosion: The outdrives...
  14. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    Me 2. :LOL:
  15. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    Hi @Scott Danforth . . . What's a marelon? :unsure: They are not bronze . . . a plastic of some sort as are the strainer bodies. I have great ambitions of this being my last year with I/O's, so just trying to make it through the season :LOL:
  16. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    Quick update . . . The magic white hose did the trick (for now) . . . both engines now getting sufficient water psi. My sea water strainer set-up really needs an easy way to back flush. The strainer does its job and filters out the marine life that gets sucked in, but the downside is that it...
  17. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    I do run barnacle buster each year through the raw water side and let it sit over night, then flush and winterize. Last time this happened the problem seemed to fix itself . . . maybe the barnacle buster did the trick. For now, I found the white hose that I used last time to tie the two...
  18. tpenfield

    Rope Stuck on Evinrude 6HP outboard

    @greb It might be a lesson learned. Most people say their engine runs . . . and maybe it did at one point. Usually the engine is up for sale because it is no longer useful (to them). Without much trouble you can do a basic pull-cord test to see if the engine rotates and even test for...
  19. tpenfield

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    Reviving this thread from a couple of years ago . . . It looks like cooling issues are back, but this time it is the port engine getting hotter. Yesterday, coming back from the fuel dock, I noticed the port engine was running at 172, while the stbd engine was at 165. (3500 ish RPM) (port is...
  20. tpenfield

    Rope Stuck on Evinrude 6HP outboard

    I recently got a 6HP Evinrude, but it wasn't seized. . . Taking the cylinder head off at this point may have been a bad idea, because you cannot pressurize the cylinders to try to get the engine to turn. Take the lower unit off, just to make sure you are dealing with only the engine portion...
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