chevy 3.0 mercruiser dies when throttled down to idle

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altalburt

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Jul 19, 2011
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I have a chevy 3.0 mercruiser that dies when it is throttled down to an idle. High end runs just fine but when pulled down to idle it dies. I have cleaned spark arrester, changed filters, plugs, put in new gas with sea foam additive, ran the boat on the for 20 miles but the problem still occurs at odd times. Any ideas?
 
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Shelby Ladner

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Apr 10, 2009
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Re: chevy 3.0 mercruiser dies when throttled down to idle

Mine was doing same thing but it also would not fire back up without pushing throttle all way forward. Try looking into open mouth of carb after you shut it down to see if fuel continues to drip. Might be carb rebuild time.
 
Rocky_Road

Rocky_Road

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Re: chevy 3.0 mercruiser dies when throttled down to idle

When it does idle, what is the rpm's?
 
Bondo

Bondo

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Re: chevy 3.0 mercruiser dies when throttled down to idle

altalburt said:
I have a chevy 3.0 mercruiser that dies when it is throttled down to an idle. High end runs just fine but when pulled down to idle it dies. I have cleaned spark arrester, changed filters, plugs, put in new gas with sea foam additive, ran the boat on the for 20 miles but the problem still occurs at odd times. Any ideas?
Click to expand...

Ayuh,... Sounds like a Carb problem,... Try rebuildin' it...
 
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Raypex

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May 13, 2011
Messages
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Re: chevy 3.0 mercruiser dies when throttled down to idle

I am certainly no expert and this may not even apply but isn't there a shift/kill or interupt switch that allows the drive to shift when the throttle is backed off?
I think there are adjustments here.
If I'm way off, i'm sorry. Just tryin' to help
Good luck.
 
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