Helicopter50
Filing Flight Plan
- Joined
- Mar 21, 2012
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- 3
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helicopter50
Good afternoon. I am asking this question because we are at wits end. I am a helicopter pilot for a police department in La. We currently operate a R44 with a Lycoming IO-540 engine. We are having a problem with HIGH cylinder head temps (red line). We have tried everything we can think of but can't find the solution. It over heats once you come into a hover for a few minutes.
We have:
1. checked the CHT probe. We have replaced it and its working fine.
2. The CHT gauge has also been checked and working properly
3.Checked plugs. They are proper plugs and in good condition
4. All 6 injectors removed and cleaned.
5. mags checked twice. Both times the timing was dead on.
6. fuel mixture cable working properly.
7. no intake leaks
8. cooling baffles ok
9. exhaust is good
my brain is fried. cant remember what else was done.
I have noticed that the inside of our exhaust pipe is usually white white. Since this problem it has turned a brownish color.
Any sugestions will be greatly appreciated.
Brian
We have:
1. checked the CHT probe. We have replaced it and its working fine.
2. The CHT gauge has also been checked and working properly
3.Checked plugs. They are proper plugs and in good condition
4. All 6 injectors removed and cleaned.
5. mags checked twice. Both times the timing was dead on.
6. fuel mixture cable working properly.
7. no intake leaks
8. cooling baffles ok
9. exhaust is good
my brain is fried. cant remember what else was done.
I have noticed that the inside of our exhaust pipe is usually white white. Since this problem it has turned a brownish color.
Any sugestions will be greatly appreciated.
Brian