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Old 15-05-2021, 03:06   #1
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Boat: GP 700, 23 feet TAMD22P engine
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Volvo penta TAMD22 has strange behaviour

Hi

When starting the engine it ramps up the RPM immediately and the RPM is unstable as you see in the video. The engine is about 40-50 degrees in the video and the oil pressure is according to the specification.

The engine has been used with a stuck wastegate in closed position, was not aware of that beeing stuck.
The engine stalls if i give it more fuel as you see at the end in the video.

Diesel filters are new, clean diesel and it is bleeded to the secondary filter, has not bleeded from there to the nozzles.

Any ideas what this could be?

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Old 18-05-2021, 10:09   #2
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Re: Volvo penta TAMD22 has strange behaviour

Welcome to the forum, oysten. I'm waiting to hear from other forum members who know more about V-P engines before I make a wild guess.
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Old 24-05-2021, 04:34   #3
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Re: Volvo penta TAMD22 has strange behaviour

OK, time to take a try. First, put something over the air intake before you suck a mouse into your engine.

I think that I see unburned fuel in your exhaust - white smoke. I'm suspecting an air constriction, such that when you throttle up you create too rich a fuel/air mix to burn.
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Old 24-05-2021, 05:05   #4
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Re: Volvo penta TAMD22 has strange behaviour

Bleed the air from the fuel system all the way to the individual injectors. If that doesn’t help check the fuel pressure into the injection pump.
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