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Gen 1 Verado 225 possible faulty turbocharger how to diagnose

Old 08-27-2020, 03:54 AM
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Default Gen 1 Verado 225 possible faulty turbocharger how to diagnose

HI,

We have a 2006 Gen 1 Verado 225 engine with approximately 500 hours. Until last year far engine has been flawless. Last year we had to replace the alternator, and just now we replaced a faulty float switch.

While we were replacing the float switch, the mechanic noticed the engine sound was off and said that there is a possible issue with the compressor in the turbocharger. No faults found on diagnostic computer.

He said that the rebuild in Croatia where the boat list is too expensive and that he can take it off for us to rebuild it in the US.

How can we diagnose if the supercharger is faulty? Do we run compression test on each cylinder?

if it is faulty given the age of engine is it worth repairing?

Thanks,

Last edited by pred02; 08-27-2020 at 04:57 AM.
Old 08-27-2020, 04:40 AM
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I thought they were supercharged.
Shows you what I know.
Old 08-27-2020, 04:45 AM
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Supercharger.

..



...


Last edited by 240 LTS; 08-27-2020 at 04:51 AM.
Old 08-27-2020, 09:28 AM
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Check your boost pressure.
Old 08-27-2020, 09:37 AM
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I found this https://www.bornagainboating.com/verado-problems/ when helping a buddy identify that he had a faulty lift pump on his 250 Verado. There is mention of known issues with the connections to the supercharger at the hose or the clamp on the hose failing allow air to be sucked and causing a hissing noise and affecting idle speeds. Like turbo chargers, super chargers also need to be serviced at times. Anything with moving parts will/can have wear.
Old 08-27-2020, 09:54 AM
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Verado uses a mechanically driven super charger whereas a turbo super charger uses a gas turbine to drive it.

Mercury service manual should offer some trouble shooting guidance.
Old 08-27-2020, 09:55 AM
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Check all around this isolator.
..

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Old 08-27-2020, 09:55 AM
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Originally Posted by outathehouse View Post
I thought they were supercharged.
Shows you what I know.
They are. Just with a different type of super charger.
Old 09-22-2020, 01:03 AM
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Hi,
Thank you. We pulled the boat out of the water and want to see if the supercharger needs to be rebuild. Besides boost pressure is there a way for the mechanic to check? Would doing compression test reveal anything?

thank you

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