Join Date: Nov 2007
Location: East Providence, R.I.
Thanked 1 Time in 1 Post
Rep Power: 10
So, if the temperatures are 10 degC and 50 degC respectively, convert both to the absolute temperature scale (just add 273 to both) and write as...
rho1/rho2 = (50+273)/(10+273) = 323/283 = 1.1413
...or about 14 percent more dense.
The motor would rather breathe the denser air.
On a typical boat gas engine w/ a computer, the computer would compensate via the O2 sensor and meter the injectors.
On a typical boat diesel w/ just a mechanical fuel pump, it would just run leaner w/ denser air.
same fuel/more air = leaner.
Put the same diesel boat in a lake (if it exists) in Denver Co. and the lack of air density @ 1mi. above sea level and POOF! it will run richer. This is why older cars in higher elevations had to get the carbs. re-jetted smaller.
A gas engine boat w/ computer would run the same because the computer would compensate.
I'm still betting the OP just needs to really clean the injectors....
Ken, East Prov., R.I. Bootlegger, PY26 Paceship
If you like my posts, or they were helpful, please click the "scales" icon on top right to add Rep points.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.