Today's Message Index:
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1. 11:43 AM - Oil pressure increases with altitude (William Daniell)
2. 12:05 PM - Ignition problem solved (William Daniell)
Message 1
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| Subject: | Oil pressure increases with altitude |
Following on my post of about month ago. I changed the sender for a new
vdo but sadly the result is the same. My oil pressure increases with
altitude...50psi at 29"map at sea level, 55-57psi at 5000' 29"map.
At low rpm the reading jumps around 45-55psi and then settles down once rpm
is increased.
All other temps etc are green and stable: cht, oil temp, egt. And the
engine is apparently running fine..smooth and the isual amount of power.
I cleaned out the oil tank about 20 hours ago and purged as required.
The sensor is a new vdo and I have dynon skyview. 325 hours on the engine.
Any bright ideas?
The oil pressure ball/spring perhaps?
Thanks
Will
William Daniell
+1 786 878 0246
Message 2
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| Subject: | Ignition problem solved |
About 3 weeks ago, I had rough ignition on one side on landing.
So i did the usual troubleshooting.
1. I swapped the CDIs with the result that the problem swapped sides.
2. Checked all connections with a multimeter, pulled wires, all good
including the earths
3. Checked the coils all good
So my conclusion was that an expensive CDI was required. My
research indicated that there were a batch of short lived CDIs around the
date of manufacture of my engine.
Bought the CDI installed it - everything fine, including mag check. Flew
landed and checked mags again. All good.
10 minutes later after chatting to some folks on the field, went off to fly
again and the engine died on one side on the mag check.
So everything apart and recheck. I found that the ground wire on one side
was broken inside the insulation. My theory is that when cold, the
insulation maintained the contact and on landing the engine, although hot,
had had good airflow, sufficient at least to maintain contact.
However after sitting still for 10 minutes was sufficient time for the
insulation to really heat up and relax.
The irony is that the ground was one of the first things I checked during
the initial trouble shooting.
Will
William Daniell
LONGPORT
+1 786 878 0246
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