[John Gregory]

Hi all

On a job today noticed a oily like residue coming out of the exhaust pipes which run out from the heat exchangers. not masses of oil but started to get a bit worried

any advice appreciated

[prodry]

Have limited knowledge of these engines from boats, but sounds like the crankshaft seal or oil pan may be the cause. 

http://www.uni-power.co.uk these boys know their onions, may be worth giving them a call to see if is worth woring about.

[john rees]

Hi john,
            was it coming from the blower exhaust?or the engine exhaust?  my chemspec machine was doing the same thing the other day which uses a kohler engine too, it turned out just to be condensation along with rusty water! and boy did it make a mess of my other van parked next to it!!lol but after a good rinse through with a hosepipe in the vac intake of the waste tank and a bit of wd4o in the oiler it's fine now. I did a primary school today and nothing strange being blown out of the blower exhaust. so maybe that's all thats up with yours?

                                    hope this helps
                                                            John

[John Gregory]

Thanks for the replies, John and prodry,the blower exhaust is clear its the exhaust that runs out of the heat exchangers that is causing the problem, I'm sure John at woodbridge will sort me out tomorrow


Thanks  John

[john rees]

john it definately sounds like condensation. hold a something in front of the exhaust and have a look what  gets deposited there.... bet it's more rusty than oily? 

                all the best
                                  John

[sage cs]

John
If you mean the two copper pipes running out the front of the machine and down thru the floor-have you checked you oil level. if it is too low you may get black deposits discharged.
Had this problem and all resolved when oil topped right up.
stu

[John Gregory]

sage , I'm not the sharpest  knife in cutlery draw,but hes I did check the oil

Thanks  john

[John Gregory]

sorry sage cs , I know you where only trying to help

John

[CARPET KNIGHTS]

sounds like carbon deposits in the heat exchanger mixed with some water!

Cheers Goron

[Jason Hedges]

Hi John my machine does it all the time, depending on where you're working though most of the time you wont notice.

I think its the exhaust fumes from the engine, occasionally you will see the same black sooty oily marks on garage doors from car exhausts, just carbon and unburnt fuel.

I've been placing low height washing up bowls under the exhaust pipes under the van when working on brickweave or unmarked driveways just in case!

You could try changing the spark plugs if they haven't been changed for a while. Made a big difference when I changed mine recently.

I'm no expert, only had my t/m for a few months so still learning!

All the best,
Jason.

[John Gregory]

Thanks Jason , the first thing I went to do was change the spark plugs , then realised my socket was too big , will try again tomorrow.

Thanks John


PS let me know how you get on like you , I'm just learning
.
John

[Jason Hedges]

Hi John,

As far as I know there are only 2 sizes of spark plug removal tool, you'll need the smaller. If you havent got one take one of your new plugs into a motor spares shop and ask them for one that fits.

My machine was misfiring and cutting out under load until I replaced the plugs, runs as sweet as a nut now and very little residue from exhausts.

Hope that sorts out your problem.

All the best,
Jason.

[John Kelly]

Change the air filter as well.