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  #1  
Old 10-08-2016, 08:46 PM
skiman66 skiman66 is offline
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Join Date: May 2016
Boat: Mastercraft, X 30, 2006, MCX 350
Location: Southwest
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2006 X30 No spark, good fuel pressure

Tried to take the boat out for a cruise and would not start. I changed plugs, coil, ignition module, wires, and distributor, still nothing. Hooked up spark plug tester, no spark on all 8 cylinders. Checked the coil for spark, none.

I have fuel pressure, hooked up fuel pressure gauge to schrader valve, 60 psi.

Checked kill switch and all wires from batteries, everything is tight and connected.

What else can I try or look into?

Thanks, Skiman
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  #2  
Old 10-08-2016, 10:22 PM
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Keith2230 Keith2230 is offline
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Join Date: Feb 2015
Boat: 2006 X-30 MCX
Location: Kansas City
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Sounds like you've covered most of the bases. Check the three relays on the front of the engine? One is fuel, one is ignition and one is ECU. Since your fuel is priming at least two of the three should be good.
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  #3  
Old 10-08-2016, 10:33 PM
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Randal03r1 Randal03r1 is offline
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Join Date: Jun 2016
Boat: Mastercraft X-Star 2004 5.7 MCX
Location: Dayton Ohio
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Fuel pump is my guess

Remove K&N air filter, open throttle and spray starting fluid in. If runs for 3-5 seconds you know it's the fuel pump. Mine just did the same about 2 months ago.

Good Luck!
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  #4  
Old 10-09-2016, 10:03 AM
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Blackhawk36 Blackhawk36 is offline
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Boat: Mastercraft Prostar 190, 1996, 5.7L Indmar
Location: Atlantic Coast
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Does the 2006 have a crank position sensor. That will create a no-spark condition.
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  #5  
Old 10-09-2016, 07:20 PM
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Keith2230 Keith2230 is offline
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Boat: 2006 X-30 MCX
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Pretty certain there is no crank position sensor on this engine. Check the neural position switch on the front of the transmission too.
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  #6  
Old 10-10-2016, 03:53 PM
Gert Gert is offline
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Boat: Prostar 190 - 2004 - MCX
Location: Holland
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Hmm, really? The Computer must know where the pistons are. So I suppose there is een CPS in this engine too.
Here a topic where you can find the Crank Position sensor in an 2003 MCX:
http://www.mastercraft.com/teamtalk/...ad.php?t=76994
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  #7  
Old 10-10-2016, 04:22 PM
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Keith2230 Keith2230 is offline
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Boat: 2006 X-30 MCX
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I stand corrected. Thanks Gert.
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  #8  
Old 10-10-2016, 05:32 PM
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CantRepeat CantRepeat is offline
 
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Boat: 06 X30
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Well, I'm not sure why there are wires running to that sensor. My 06 MCX X30 does not use it.
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Tim
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  #9  
Old 10-19-2016, 02:50 PM
skiman66 skiman66 is offline
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Join Date: May 2016
Boat: Mastercraft, X 30, 2006, MCX 350
Location: Southwest
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Well still no luck with anything I have tried and your suggestions. Cranks but won't start. Have checked everything that o possibly can and still nothing. I checked the crank sensor with the ohm meter it's good and I have power to it. I called the mastercraft place and they said check the three fuses by the relays, I only have one. Could that be the problem?? I pushed it in but it feels like its reset. Could that fuse be bad? It's gonna be a bear getting it out of where it is. I took a picture and will try to upload.


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  #10  
Old 10-19-2016, 02:58 PM
skiman66 skiman66 is offline
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