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  #11  
Old 05-23-2018, 10:06 AM
Cumminscj Cumminscj is offline
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Join Date: Oct 2016
Boat: 86 Magnum Skier
Location: Southeast
Posts: 281
Take and bag full of ice and ice the fuel pump down and see if the problem goes away. Since this is a LT1 it has a schrader valve on the fuel rail. Get a pressure gauge on it.
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1986 Marlin Magnum Skiier-sold
2000 Maristar 210VRS-weekend ride
1996 205 with LT1 cracked block-winter project
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  #12  
Old 06-12-2018, 11:43 AM
valovic valovic is offline
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Join Date: May 2017
Boat: 1996 Mastercraft Prostar 205
Location: Southeast
Posts: 11
So I think I fixed the power issue. I changed the steam lines based upon the service bulletin and replaced the thermostats (160F drilled & 140). I had it out for a few hours last weekend and no issues. I think it was overheating and the ECM was turning off some cylinders. The high pitched whine is still there. I'll try a post the video. I'll also try and get the fuel pressure, and try the ice bag trick next weekend.

Last edited by valovic; 06-12-2018 at 05:51 PM. Reason: Spelling/grammar
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  #13  
Old 06-12-2018, 11:51 AM
valovic valovic is offline
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Join Date: May 2017
Boat: 1996 Mastercraft Prostar 205
Location: Southeast
Posts: 11
https://drive.google.com/file/d/1etL...w?usp=drivesdk
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power loss, transmission, whine

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