F225 making oil - The Hull Truth

FiremanPO · 06-18-2006, 04:34 PM

Hey Andy I was wondering why one of my F225's it seems like every time i check the oil before each trip , there is more showing on the dip stick. Thanks for any info. Capt Chris

SIM · 06-18-2006, 04:45 PM

Model year and engine hours? Did you buy them new?

Andy

FiremanPO · 06-18-2006, 04:54 PM

they are 2002 400 hrs f225 yamaha 4 stroke 25 inch shafts no I bought them on a 31 contender with 200 hrs on them

SIM · 06-18-2006, 06:23 PM

Are you using Ring Free? Do you do alot of slow speed (engine) running?

Andy

Glen E · 06-18-2006, 06:55 PM

I have one souce I trust that says being underpropped also helps make oil (on all 4 strokes). Andy?

SIM · 06-18-2006, 07:20 PM

Glen....over propped(engine is well below its rated WOT rpm)will sometimes cause this. Never heard of being underpropped causing this. Being underpropped is a very rare condition anyways.A cold running engine(stuck opent-stats) will cause this. Excessive carbon build up will cause this. A cylinder leak down test can pin point the cylinder that is not "tight".

Spark Plug color (black)is a good indicator if the engine is being over fueled for some reason (ECU or injectorcaused).

It's hard to just say its this or its that..............hence the reason I ask the all the questions andto try and get an idea of how someone uses there boat andthe enginehistory.

Andy

SIM · 06-18-2006, 07:34 PM

Also have to add..........it depends on how you check your oil. With the engine off you need to tilt the engine up for a couple of minutes to get all of the engine oil behind the pistons to drain back into the pan. Sometimes that amount is quite a bit. I will see local customers come in a say that there engine is using a little oil. I tell them how to check it and usually they forget to tilt em up first.

Andy

Glen E · 06-19-2006, 12:57 AM

Quote:

SIM - 6/18/2006 7:20 PM

Glen....over propped(engine is well below its rated WOT rpm)*will sometimes cause this. Never heard of being underpropped causing this. Being underpropped is a very rare condition anyways.*A cold running engine(stuck open*t-stats) will cause this. Excessive carbon build up will cause this. A cylinder leak down test can pin point the cylinder that is not "tight".

Spark Plug color (black)*is a good indicator if the engine is being over fueled for some reason (ECU or injector*caused).

It's hard to just say its this or its that..............hence the reason I ask the all the questions and*to try and get an idea of how someone uses there boat and*the engine*history.

Andy

sorry meant overpropped....

FiremanPO · 06-19-2006, 11:56 AM

Thanks Andy & Glen I do a little of every thing trolling , drifting . I am going to change my oil here soon I will try the tilting up for a few min, and see if that works .