Oil in exhaust?
We have seen intermittent patches of oil coming from the exhaust, usually after applying a bust of reverse when docking. Any thoughts on why or what to check? I've checked the oil and it does not show...
View ArticleRe: Oil in exhaust?
There is a good chance it is un-burned diesel oil. Don't forget Diesel is just low viscosity oil. There should be no connection between the exhaust and direction the transmission is in, although...
View ArticleRe: Oil in exhaust?
Rex,I sometimes get a soot ring on the swim step/transom if I've pushed the boat to make 6.5 or 7 knots for an hour or so of motoring. There are threads here on the forum discussing this as not being...
View ArticleRe: Oil in exhaust?
When you overload a diesel it does not burn the fuel efficiently and the unburnt diesel exits your exhaust. Also if you underload the diesel, carbon builds up. When you go to an overload condition,...
View ArticleRe: Oil in exhaust?
Rex How many hours on your engine? And which model do you have? How much oil do you consume? Addison
View ArticleRe: Oil in exhaust?
as Peter suggested. When we bought our boat with 1200 hours on the engine it smoked pretty badly. After having the injectors cleaned and reset it made a huge difference in the power, reduced smoke...
View ArticleRe: Oil in exhaust?
Thanks all for the great input and questions. Will definitely leave the valve in the open position while sailing. Neil: there was also some black smoke (note that on Wednesday I revved the engine hard...
View ArticleRe: Oil in exhaust?
Addison, Found the specs on the motor: Type: Diesel, 4-cycle, naturally aspirated, FWC Hours: 598.3 by meter Manufacturer: YANMAR Model: 4JHBE Serial Number: 03476 #Cylinders: Four, in-line Rated...
View ArticleRe: Oil in exhaust?
The only difference between the later 50 HP vs the 44HP is that the 44 HP has a cylinder jacket for easy rebuild. Hope I never have to go there.
View ArticleRe: Oil in exhaust?
Rex As a point of reference, I have the 50 hp 4JH2E engine and we burn less than 1 qt of oil per 100 hours unless we are motoring hard in which case we are just around 1 qt. Normally we cruise at 2400...
View ArticleRe: Oil in exhaust?
Thanks Addison & Peter. I'll add some injector cleaner to the fuel to see if that helps, run it at some higher rpms, and keep a close eye on the oil consumption. Will also contact a local Yanmar...
View ArticleRe: Oil in exhaust?
Rex,I have the same engine as you on my 1989 C42 hull #108. I have about 2200 hours on the engine and have never needed to add oil between oil changes. I get a little smoke when it is cold but no...
View Article
