Difference in Plug Colouring
in 912 / 914 Technical Questions
7 years ago
Hi Guys,
I am just wondering what your experience is with the plug colour ing across the 4 cylinders on a 912 UL 2007.
This is on a Microlight and has spend some time (circa 18 mths) being mostly ground run and at lower RPM without much by way of full flying conditions.
The plugs in the two rear cylinders (1,2) are very black and sooty (not oily or wet) and the plugs in the two front cylinders (3,4) are fairly light brown in colour (what I would think is close to normal)
Just wondering what your experiences are with this and why the difference between the two rear and front?
I am just wondering what your experience is with the plug colour ing across the 4 cylinders on a 912 UL 2007.
This is on a Microlight and has spend some time (circa 18 mths) being mostly ground run and at lower RPM without much by way of full flying conditions.
The plugs in the two rear cylinders (1,2) are very black and sooty (not oily or wet) and the plugs in the two front cylinders (3,4) are fairly light brown in colour (what I would think is close to normal)
Just wondering what your experiences are with this and why the difference between the two rear and front?
photo3.JPG (You do not have access to download this file.)
photo2.JPG (You do not have access to download this file.)
photo1.JPG (You do not have access to download this file.)
photo4.JPG (You do not have access to download this file.)
