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-   -   withe smoke (https://www.rcuniverse.com/forum/merlin-turbine-clinic-376/11639745-withe-smoke.html)

jcterrettaz 06-17-2017 05:54 PM

white smoke
 
Can someone explain...
I just switch to diesel for my Jet Munt VT80 ( 5% oil)..and 100XBL
Twice today when I put full power the turbine shot down and make a big cloud of white smoke!? (VT80)
Then run turbine for two minute at minimum and gradually open the throttle to full and was OK ...what can make that happen?

Felix Barrao 06-18-2017 11:06 AM

I have used diesel in my VT-80 and M-90 with no issues, ( except white smoke after shut down)
Try to accelerate and decelerate point to point twice, to abble the fadec to learn the new situation, and probably the problem will disappear. If not, try to increase a little the acceleration delay.

jcterrettaz 06-18-2017 12:11 PM

Thank you for the advice Felix

AEROSHELDON 07-01-2017 04:27 PM

I had this same issue with a 140 today swiching to diesel..... I am still a bit new, so what does this mean from the above post?

"Try to accelerate and decelerate point to point twice, to abble the fadec to learn the new situation, and probably the problem will disappear."

And did it solve your problem?

jcterrettaz 07-03-2017 05:04 AM

Yes problem solve ..Felix was 100% right . Since I ad this problem the VT80 run fine on Diesel .

AEROSHELDON 07-03-2017 05:15 AM

Thank you.

Felix Barrao 07-03-2017 06:10 AM

Nice to know.
The fadec runs with parameters " learned" from previous runnings, and correct them slowly in real time with actual data, so, if there have been major changes, ( pump, pipes, fuel.. the teaching helps a lot to the fadec to learn the actual situation.


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