Today's Message Index:
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1. 11:03 AM - Re: weird bumping (thumping noise) sound from the Jet??? Help (skidmk)
2. 11:09 AM - Re: weird bumping (thumping noise) sound from the Jet??? Help (skidmk)
3. 11:16 AM - Re: Re: weird bumping (thumping noise) sound from the Jet??? Help (Anthony Royal)
4. 11:21 AM - Re: weird bumping (thumping noise) sound from the Jet??? Help (skidmk)
5. 11:36 AM - Re: Re: weird bumping (thumping noise) sound from the Jet??? Help (Delfin Driver)
6. 01:34 PM - Re: Re: weird bumping (thumping noise) sound from the Jet??? Help (William Geipel)
7. 11:06 PM - Re: Re: weird bumping (thumping noise) sound from the Jet??? Help (Bill Culberson)
Message 1
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| Subject: | Re: weird bumping (thumping noise) sound from the Jet??? Help |
no change or variation in any engine parameters.
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483145#483145
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| Subject: | Re: weird bumping (thumping noise) sound from the Jet??? Help |
Hey Dawg,
Got the questions, we use oil from the can direct. Mobil. As for the thumping
noises,, not really noticed at 80% or not. Most prevalent during take-off (100%)
less so in cruise 85-90. It seems that it is getting more prevalent, up
to and including the bumping on shut down this time.
there is no variation in any op specs on the T's and P's.
there is no evidence of flaming, or pop flames coming our of the tail.
there is what I feel maybe more than normal soot on the tailcone (in the vicinity
of the antenna's)
what might you be thinking about the 80%?
I will change the fuel filter tomorrow, aerate (bleed) the fuel system and see
if that cures it.
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483146#483146
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| Subject: | Re: weird bumping (thumping noise) sound from the Jet??? |
Help
Have u cleaned the injectors? Had a thumping when power back in decent at 80-85%.
Cleaned injectors and went away
Sent from my iPhone
> On Sep 12, 2018, at 2:09 PM, skidmk <skidmk@gmail.com> wrote:
>
>
> Hey Dawg,
>
> Got the questions, we use oil from the can direct. Mobil. As for the thumping
noises,, not really noticed at 80% or not. Most prevalent during take-off
(100%) less so in cruise 85-90. It seems that it is getting more prevalent,
up to and including the bumping on shut down this time.
>
> there is no variation in any op specs on the T's and P's.
>
> there is no evidence of flaming, or pop flames coming our of the tail.
>
> there is what I feel maybe more than normal soot on the tailcone (in the vicinity
of the antenna's)
>
> what might you be thinking about the 80%?
>
> I will change the fuel filter tomorrow, aerate (bleed) the fuel system and see
if that cures it.
>
> --------
> Mike "Skidmk" Bourget
> Ottawa, Ontario
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=483146#483146
>
>
>
>
>
>
>
>
>
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| Subject: | Re: weird bumping (thumping noise) sound from the Jet??? Help |
yes sir ultrasonically cleaned, about 3 hours ago. symptoms went away for about
3 hours, and are now back with a vengeance.
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483148#483148
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| Subject: | Re: weird bumping (thumping noise) sound from the Jet??? |
Help
What exact oil are you using in the M701p?
On September 12, 2018 13:11:53 "skidmk" <skidmk@gmail.com> wrote:
>
> Hey Dawg,
>
> Got the questions, we use oil from the can direct. Mobil. As for the
> thumping noises,, not really noticed at 80% or not. Most prevalent during
> take-off (100%) less so in cruise 85-90. It seems that it is getting more
> prevalent, up to and including the bumping on shut down this time.
>
> there is no variation in any op specs on the T's and P's.
>
> there is no evidence of flaming, or pop flames coming our of the tail.
>
> there is what I feel maybe more than normal soot on the tailcone (in the
> vicinity of the antenna's)
>
> what might you be thinking about the 80%?
>
> I will change the fuel filter tomorrow, aerate (bleed) the fuel system and
> see if that cures it.
>
> --------
> Mike "Skidmk" Bourget
> Ottawa, Ontario
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=483146#483146
>
>
Message 6
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| Subject: | Re: weird bumping (thumping noise) sound from the Jet??? |
Help
Stock engine uses a mineral oil. Royco 481. (or Shell sp3 or 3sp, cant remember
which) Mobile jet and 2380 are synthetic. May cause metal in your sample.
Had several airplanes that rumbled around 80% never had any other issues.
Is the thumping a metallic sound? Had one of those. Required new engine to stop
the thumping.
> On Sep 12, 2018, at 12:16, Anthony Royal <skyking76t@verizon.net> wrote:
>
>
> Have u cleaned the injectors? Had a thumping when power back in decent at 80-85%.
Cleaned injectors and went away
>
> Sent from my iPhone
>
>> On Sep 12, 2018, at 2:09 PM, skidmk <skidmk@gmail.com> wrote:
>>
>>
>> Hey Dawg,
>>
>> Got the questions, we use oil from the can direct. Mobil. As for the thumping
noises,, not really noticed at 80% or not. Most prevalent during take-off
(100%) less so in cruise 85-90. It seems that it is getting more prevalent,
up to and including the bumping on shut down this time.
>>
>> there is no variation in any op specs on the T's and P's.
>>
>> there is no evidence of flaming, or pop flames coming our of the tail.
>>
>> there is what I feel maybe more than normal soot on the tailcone (in the vicinity
of the antenna's)
>>
>> what might you be thinking about the 80%?
>>
>> I will change the fuel filter tomorrow, aerate (bleed) the fuel system and see
if that cures it.
>>
>> --------
>> Mike "Skidmk" Bourget
>> Ottawa, Ontario
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=483146#483146
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
>
Message 7
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| Subject: | Re: weird bumping (thumping noise) sound from the Jet??? |
Help
My previous L-29 would make that kind of noise (hollow thumping) at cruise settings
80-90% power. Not engine related, I believe it was just the inlet ducting.
I inspected it numerous times and found no issues. Normal.
Bill Culberson
Red Star Aero Services
251/716/8119
> On Sep 12, 2018, at 3:22 PM, William Geipel <l129bs@gmail.com> wrote:
>
>
> Stock engine uses a mineral oil. Royco 481. (or Shell sp3 or 3sp, cant remember
which) Mobile jet and 2380 are synthetic. May cause metal in your sample.
>
> Had several airplanes that rumbled around 80% never had any other issues.
> Is the thumping a metallic sound? Had one of those. Required new engine to stop
the thumping.
>
>
>
>
>
>> On Sep 12, 2018, at 12:16, Anthony Royal <skyking76t@verizon.net> wrote:
>>
>>
>> Have u cleaned the injectors? Had a thumping when power back in decent at 80-85%.
Cleaned injectors and went away
>>
>> Sent from my iPhone
>>
>>> On Sep 12, 2018, at 2:09 PM, skidmk <skidmk@gmail.com> wrote:
>>>
>>>
>>> Hey Dawg,
>>>
>>> Got the questions, we use oil from the can direct. Mobil. As for the thumping
noises,, not really noticed at 80% or not. Most prevalent during take-off
(100%) less so in cruise 85-90. It seems that it is getting more prevalent,
up to and including the bumping on shut down this time.
>>>
>>> there is no variation in any op specs on the T's and P's.
>>>
>>> there is no evidence of flaming, or pop flames coming our of the tail.
>>>
>>> there is what I feel maybe more than normal soot on the tailcone (in the vicinity
of the antenna's)
>>>
>>> what might you be thinking about the 80%?
>>>
>>> I will change the fuel filter tomorrow, aerate (bleed) the fuel system and
see if that cures it.
>>>
>>> --------
>>> Mike "Skidmk" Bourget
>>> Ottawa, Ontario
>>>
>>>
>>>
>>>
>>> Read this topic online here:
>>>
>>> http://forums.matronics.com/viewtopic.php?p=483146#483146
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>
>
>
>
>
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