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Old 09-16-2019, 05:01 PM   #8
Nautamaran
2004 140 SHC U.S. T1N
 
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Default Re: Turbo surging/cycling

Your description of symptoms sounded EXACTLY like my recent split intake hose, so your missing O-ring fits. I found a Low Boost code in the ECM and a 1-1/2” tear on the top of my upper intake hose.

Bill: have you considered a bit of shimming under the o-ring? A narrow strip of adhesive foil duct tape may stem the flow.

-dave
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