tanmar ym1500 breathing ?

[billymc]

hi im a new member from the uk just got a ym1500 everything seems ok starts without heat not smokey but breathing a bit fromthe breather pipe got that oily smell ? but no oil dripping from pipe? can anybody tell me if this model breathes a bit ? thanks

 

[winston1]

Here is a utube showing excessive breathing. Yanmar 155D Crankcase Vent - YouTube

 

[clemsonfor]

There all gonna breath/smell like oil from that tube. The reason, is that its connected to the crankcase! There is oil in there as well as tiny amounts of unburnt fuel and moisture after a long sitting. For this reason tiny drops of oil are likely to come out after a long working sessions as well as moisture when it first gets hot as it boils the water off. There will be some pulses as there is a huge amount of rotating mass in there from the crank shaft throwing oil everywhere. If you doubt this open your oil filler hole and look at the hurricane of oil that is going on in there, some droplets or mist is bound to find its way to the tube. The video is a good indication of when you need to worry!!!

 

[billymc]

thanks for the response's o it definetly dose not breath like that its more steam like and not filling the small pipe light breathing i would say .as its starts great hardly a puff of smoke and burns light grey black at exhaust pipe no heat needed . would you say the engine is not bad then? thanks

 

[clemsonfor]

thanks for the response's o it definetly dose not breath like that its more steam like and not filling the small pipe light breathing i would say .as its starts great hardly a puff of smoke and burns light grey black at exhaust pipe no heat needed . would you say the engine is not bad then? thanks

Without a load it should have almost no smoke out of the stack at operating rpms and idle. Light faint grey smoke is ok but if its heavy you may be over fueling or not burning completly? Once under a load it will darken up as there is unburned fuel in the exhaust.

But to let you know yes it sounds fine.

 

[California]

If it starts easily then the compression is good. If that, and fluids aren't disappearing, then there's no problem.

If you change the oil and get the condensation out of the crankcase, the vapor may disappear.

If you are uncertain about a fluid leak, be sure to use the compression release before each start to blow out any moisture from the cylinders.

 

[winston1]

Yep, sounds like you need to accumulate hours! :thumbsup:

 

[billymc]

thanks o it has very little to no smoke at tick over . and with finishing mower on it has a slight haze at worst from stack to start from cold on near full throttle it fires up without heat small puff smoke then clears . will check fluids in morn to check see if anything has been used. and let you all know thanks

 

[Neat 1500]

my 1500 vents nothing at all from the crank case vent. it doesnt even have a wet film of oil around it or in it. this is how it should be if the engine is 100%. they will start to do this as they get on on hours but dont be too worried about it, sounds like it is still running well so a few more 1000 hours may still be achieveable :thumbsup:

 

[billymc]

yes i hope to get a bit of use out of it before i need to do any engine strips. i checked the oil its about 5ml bellow the top mark it has just been changed before i got it along with filters and a clutch i think it has sat about for a bit so will give it a bit of use see how it goes my old mitsi compact needed heat to start do yanmars not need heat ? as it starts so easy ? thanks

 

[Car Doc]

Your vent tube sounds normal as can be there has to be some movement of air its got to have an oil smell and there isn't any PCV system to evacuate the normal blow by so in such a small tube its minimal what you describe dont worry about it.

If it uses some oil dont worry about that either that can come and go depending on oil type and usage not just engine condition.

The intake air pre-heater you have is called a Thermostart or TS for short around here will be maybe necessary once the temps get down to 50 deg F it is for mine anyway and maybe a lot lower for you they are all different from what I gather.

I know a guy here that never uses his and I have personally seen it start at 20 deg F w/o the TS so it varies it didn't like it but it did start.

fwtw I always use mine once it gets cold and I pull the comp release to get the engine spinning over after I use the TS for the 20 seconds. good luck

 

[billymc]

thanks the guy said he put a good synthetic oil in it but a bit thinner than old oil he said. o it can get cold here so when i use it in the cold weather i will use the ts and comp release when it gets cold . wont be using it for the next few weeks but will let you all know how i get on with it when i use it next thanks again

 

[Car Doc]

thanks the guy said he put a good synthetic oil in it but a bit thinner than old oil he said.

Oh my God thats the problem right there just like I said about the type of oil!

Please go back to petroleum based 15-40 RotellaT or whatever you have available synthetics are not for 30 year old loose tolerance diesels or any old engine.

 

[billymc]

o good job ive not run it much .i think in the uk we call old oil. mineral or multi grade for engine and backend i think thats what i have in my mf35. but think its 10 w 40? well i will check how much oil dose the engine hold? thanks

 

[Car Doc]

o good job ive not run it much .i think in the uk we call old oil. mineral or multi grade for engine and backend i think thats what i have in my mf35. but think its 10 w 40? well i will check how much oil dose the engine hold? thanks

Old oil thats a funny way to put it but it does describe it well enough! Yes 10-40 petroleum based diesel oil is what you could be using in a real cold climate the API classification is CD and up CF-4 is what a lot of current diesel oils are and they work fine with old engines.

Synthetic has a tendency to run through guides and seals and rings on engines not designed for it because it is so slick it just seeps by. I wont use it in anything I own fwtw.

You can change it whenever its not an emergency its in there now but it sure wont do that engine much good in the long term change it to petroleum based at your next oil change should be fine or anytime its up to you. :thumbsup:

I dont know what it holds but I imagine its about 5-6 qts as a guess but someone else here with that machine may chime in and help you out further?

 

[billymc]

o ill change it dont want any probs will see if anybody can tell me how much it will hold thanks again will let every body know how i get on after hols thanks

 

[Car Doc]

I read just now on Hoye's web site a post there says the 1500 holds 4 qts.

That is a great place for Yanmar info and parts fyi.

 

[clemsonfor]

yes i hope to get a bit of use out of it before i need to do any engine strips. i checked the oil its about 5ml bellow the top mark it has just been changed before i got it along with filters and a clutch i think it has sat about for a bit so will give it a bit of use see how it goes my old mitsi compact needed heat to start do yanmars not need heat ? as it starts so easy ? thanks

When you say heat do you mean like from engine heater or block heater or like hair drier blown in the intake, or just the glow plugs. If you need heat in the summer months id say your close to worn out. The better your engine starts without aids of anykind the better shape its in. If its only 5ml low how in the world did you even measure that? There can be 10x that just stuck to the walls and in the oil journals as you check it.

 

[clemsonfor]

thanks the guy said he put a good synthetic oil in it but a bit thinner than old oil he said. o it can get cold here so when i use it in the cold weather i will use the ts and comp release when it gets cold . wont be using it for the next few weeks but will let you all know how i get on with it when i use it next thanks again

Most of us use the compression release anytime we start up for the first time. You can hold it open and spin it till the oil pressure cuts the light out the close it and let it fire. This keeps the first compression stroke on a fully oiled and presurized system. Also keeps wear on the starter down.

 

[TGeorge]

The YM1500 holds 4 quarts of engine oil. I use Rotella 15w-40 in mine. I never have to add oil between changes.