My Rans S6 seems to have developed a rough running problem The engine was taken out for a Bulkhead repair and it was replaced and the carbs were balanced up, the aircraft has only been test flown for 40minutes and then flown to Swansea (40minutes) and since then it has ran rough.
Today my friend who is keeping an eye on it at Swansea for me checked for any obvious irregularities and noticed that one Carb was tilted into a 1 o clock position whilst the other was bolt upright !!!! He straightened it upright and it started but only will run with the choke out.
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Some pictures of your carbs (unfortunately my camera gave up the ghost after those 3 and I couldn't get any more).
Now standing at the prop looking AFT,
the right carb was tilted over to about the 1o/c posn whilst the left one was vertical. 12o/c
That definitely does not look right and a fellow aviator and part time tinkerer thought that it looked worng to him as well. He said the float is not free to travel up and down if it is not vertical. pic 1269 shows the tilted one whilst 1270 shows the upright one. I straightened the tilted one to the vertical posn although it wasn't what I would call loose.
Pic 1268 shows some sort of shroud under the carbs which would stop you from removing the bowls to check for water.
Incidently as the water would be at the bottom of the tank I would think it would get drawn into the engine pretty quickly and thus after a flight should have gone through the engine and be no more? Yes ?no? .
I could not see any means of checking for water short of pulling a hose off. Everything looked to be connected.
I found the log books wrapped in a pink bubble wrap pouch and on checking it found where the engine had been signed off by the LAA engineer and that was about 35 hours ago. There were no remarks or engine hours added since.
The carbs are very hard to get to not like the ones in your piccs, they are under the radiator which sits on top of the engine. Iam now very loathe to touch any more as I am way out of my comfort zone. You cannot get the lower cowling off without apparently removing the prop so this makes it even worse to get at the carbs.
I could not in all conscience touch this aircraft without getting it certified by someone who knows what they're doing. Your engineer has even certified it quoting the relevant maintenance manual reference, which without the manual is impossible
Sorry to be the bearer of bad news but I am most uncomfortable about this.
Sorry I forgot to add that I took it out to run it and it started great first time but then coughed and quit and I could not keep it running without the choke out
Any ideas ?