excessive oil from exhaust pic's added

[mikegj]

HI ALL my engine has too much oil from exhaust, blue while running after shut down black oil drips from prop, skeg, midsection, and cowling what causes this? I'm mixing 50/1 using omc TCW3 oil motor runs very good despite the oil problem. I decarbed last month with seafoam. only other problem is after running it rpm doesnt always return to idle only drops to 1000/1200 rpm. ive narrowed it down to control box

 

[bigpoppakdog]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

is this in water or hooked up to muffs in the driveway?

 

[mooserini]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

HI ALL my engine has too much oil from exhaust, blue while running after shut down black oil drips from prop, skeg, midsection, and cowling what causes this? I'm mixing 50/1 using omc TCW3 oil motor runs very good despite the oil problem. I decarbed last month with seafoam. only other problem is after running it rpm doesnt always return to idle only drops to 1000/1200 rpm. ive narrowed it down to control box

Not to insult your intelligence.. but this isn't an oil injected engine is it? If so mixing the fuel only makes it have massive overoiling. Also I'd make sure your ignition system is healthy... check for a good spark, replace the plugs etc.. often times incomplete burning from a weak ignition system will result in remaining unburned (since oil is the harder part to ignite when mixed with gasoline) Any specifics on the engine year and HP would be helpful just in giving you advice on giving the ignition system a health inspection.

 

[mikegj]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

the motor is a 1979 johnson 100 hp javelin sorry. and yes it is while running in the lake. no this is not a vro motor. thanks

 

[mooserini]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

the motor is a 1979 johnson 100 hp javelin sorry. and yes it is while running in the lake. no this is not a vro motor. thanks

When is the last time you did a plug change... do the plugs look oily as well or are they dry and brownish after running it around for a bit?

 

[mikegj]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

new plugs put in in may about 30 hrs on them now but havent pulled them lately

 

[mikegj]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

I pulled all plugs and all are wet , I cant find any external leaking

 

[Benny1963]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

check needles and seat or build carbs and use brp kits with floats i just used
some sierra kits on my 150 and caught hell bowl on bottom carb wouldnt seal
and top carb was pushing fuel past seat ,went with full brp kits runs like a dream no more sierra for me

 

[mikegj]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

thanks benny so you think its a carb problem and not a engine getting ready to blow?

 

[bigpoppakdog]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

do a compression test. I think that will make everyone feel better knowing what your compression is. Hate to have you have go through a bunch of fuel things if it turns out you had a bad cylinder. How does the motor run? Good hole shot? Good power?

 

[woody66912]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

you say you have oil in the cowling and dripping down the midsection this could also be a blowen base gasket.

 

[mikegj]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

compression is as follows top port 120 top stbd 125
bottom port 125 bottom stbd 125
can I do a leak down with this tester from auto zone?

 

[mikegj]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

here is a pic of oil running down skeg

 

[mikegj]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

here is the other pics of midsection sorry had to crop the heck out of them to fit. if I have a blown gasket base that still doesnt explain all the oil or is that much normal and you just never see it otherwise?

 

[jwbmarine]

Re: excessive oil from exhaust

Re: excessive oil from exhaust

I use,prob 75 sierra carb kits a month!.....they are absolutely --OK...and i have used them for 25 yrs!!!...the other fellows prob,i can assure u,..is dibris,..or not doing the job correctly!....nope,i am in no way affiliated w/sierra.....wish i was....thier carb kits are absolutely fine,for any application,including high alcohol.

 

[Benny1963]

Re: excessive oil from exhaust pic's added

ive had luck with most sierra products
and have used ther carb lits before ,but this one
i had probs with and it was not due to error checked them three times
but theres always that chance ,
the brps solved it .had needle and seat that wouldnt seal
causeing flooding on top carb
and bowl gasket that wouldnt seal proper
the sierra gaskets are not as forgiving
as the brp redloine also makes good kits
but you are right most times ite mech fault /not properly cleaned
or in correct float adjustment mine was fixed jet .carb removal of jets and
and welchs is a must