View Full Version : fumes on exshaust section
adarob
16th Feb 2012, 17:05
hey guyz
can someone tells us what is the black fume in the pic below is ? is it fuel or oil residuals or what ? & what causes it & when it occurs , does it occur when the T/R is deployed or during Eng shutdown or start ?
http://www.gmrup.com/d3/up13294150271.jpg
adarob
19th Feb 2012, 07:22
where is the answer's folks !!!
HAWK21M
19th Feb 2012, 07:30
Misaligned Oil Breather system......causing oil fumes & accumulated Oil to spray overboard from the cowl.
adarob
19th Feb 2012, 15:19
mr HAWK21M (http://www.pprune.org/members/32904-hawk21m) , excellent , thnx 4 ur answer :D
sycamore
19th Feb 2012, 19:16
Possibly an overfilled system,which can cause oil to syphon out...
adarob
22nd Feb 2012, 04:29
Possibly an overfilled system,which can cause oil to syphon out...
mr. sycamore , excellent , thnx 4 ur answer !!!
Most engines have a series of overboard drains usually located around the 6 o'clock position on the engine. These drains allow engine components & gearbox drive pads to drain away minor oil & fuel leaks. Over time these leaks stain the cowl. The thrust reverser does a good job of spreading it everywhere.
Another common issue is when servicing the oil tank from small cans it can be easy to spill some and it pools in the lower cowl area. The thrust reverser does the rest.