Let start a I can fix it thread. - Page 2

mikechell · 11-17-15, 08:08 PM

Okay ... as I said, if you're thinking of the flame arresting screen in the intake track, that's were the problem existed. The screen itself was fine.

The gear case work that was done was an important clue, but not an obvious one. No one expects a mechanic/technician to make such a simple mistake. But this one had done just that, and left a plastic parts bag on the engine. Under the cover, it had finally been drawn into the intake.

It was heavy enough to lay down until the engine got to 3500+RPM. Then the air flow would flip it up and cover the whole screen, shutting off ALL airflow to the engine. The MAP showed a dramatic drop in pressure as the engine shut off.

As soon as the engine was not running, the plastic, not being affected by vacuum, would fall back out of the way.

All of this was happening deep in the silencer case. It couldn't be readily seen.

Captmikestarrett · 12-02-15, 06:12 PM

That is a cool find. Better than birds in your motor.

Capt Mike

mikechell · 01-04-16, 05:36 PM

Or a few mud daubers ...

Captmikestarrett · 01-12-16, 03:41 PM

Better check under the cowling now and then...

Dang..

Capt Mike

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12-02-15, 06:12 PM	#27
Captmikestarrett BassFishin.Com Super Veteran Join Date: May 2006 Location: Accokeek MD Posts: 3,315	That is a cool find. Better than birds in your motor. Capt Mike __________________ Capt Mike Starrett light tackle guide Potomac River http://www.indianheadcharters.com

01-04-16, 05:36 PM	#28
mikechell BassFishin.Com Active Member Join Date: Apr 2011 Posts: 464	Or a few mud daubers ... Attached Thumbnails

01-12-16, 03:41 PM	#29
Captmikestarrett BassFishin.Com Super Veteran Join Date: May 2006 Location: Accokeek MD Posts: 3,315	Better check under the cowling now and then... Dang.. Capt Mike __________________ Capt Mike Starrett light tackle guide Potomac River http://www.indianheadcharters.com

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11-17-15, 08:08 PM	#26
mikechell BassFishin.Com Active Member Join Date: Apr 2011 Posts: 464	Okay ... as I said, if you're thinking of the flame arresting screen in the intake track, that's were the problem existed. The screen itself was fine. The gear case work that was done was an important clue, but not an obvious one. No one expects a mechanic/technician to make such a simple mistake. But this one had done just that, and left a plastic parts bag on the engine. Under the cover, it had finally been drawn into the intake. It was heavy enough to lay down until the engine got to 3500+RPM. Then the air flow would flip it up and cover the whole screen, shutting off ALL airflow to the engine. The MAP showed a dramatic drop in pressure as the engine shut off. As soon as the engine was not running, the plastic, not being affected by vacuum, would fall back out of the way. All of this was happening deep in the silencer case. It couldn't be readily seen.

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