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  #271  
Old 07-24-2013, 11:42 AM
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93Prostar190 93Prostar190 is offline
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E2044 I believe !
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  #272  
Old 07-24-2013, 02:09 PM
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BrushyCreekXS BrushyCreekXS is offline
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Originally Posted by 93Prostar190 View Post
Brushy ... Correct .... But one of the pins to relay carries current and that connection is key, we were able to pull of the relay (they are located in a harness that clips to the ecu brackets on the MCX)

And when we pulled the relay we could see the burn and melted plastic of resistance .... When this would happen it would "cook" the relay and the pump would stop working.

We also replaced a fuel pump one time because it would key up to 60 psi nicely but the pressure would drop while running and pressure was lost after shut down very quickly.

With the new Airtex we held pressure better after key off and running PSI is 60 psi steady.

In our case the connector that receives the fuel pump relay has been our nemesis ..... A fuel pressure gauge has been key to troubleshooting.

Measuring 12 volts with a meter is a good thing, but remember that does not measure current .... And you need steady current to the fuel pump to ensure proper operation at the correct duty cycle of the pump.
Thanks 93. Do you know how I can determine the correct Relay Part number? Here is my plan...

- Buy a decent pressure gauge to measure fuel pressure as well as one that will allow for collecting a sample of the fuel to inspect it for water. - Measure pressure and see what it is with Key On at least.
- Take a multi-meter and an LED circuit test light to check continuity if need be in the pump assembly or wiring harness and voltage at the pump connector.
- Buy fuse replacements as well as a relay (I assume there is a 15A fuse in addition to the relay.)
- Buy the Airtex pump (if it is a fuse or relay, save the pump for eventual need anyway)
Question: If it is a fuse or relay, is this a symptom of a larger problem?
- Order a gasket replacement for when I pull the fuel pump Module out of the tank (Should I also replace the 12 bolts? I assume they have some sort of rubber seal with them as well?)
- Order a fuel filter, will change that if I replace the pump. (Should I go ahead and replace anyway?)
- Keep gas tank over a quarter tank in the future if possible.
- Save the $529.00 on the assembly

Thx.
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  #273  
Old 07-24-2013, 02:23 PM
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BrushyCreekXS BrushyCreekXS is offline
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Also, I guess I need to buy a torque wrench of some sort to be able to tighten the 12 bolts back correctly....
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  #274  
Old 07-24-2013, 03:00 PM
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Quote:
Originally Posted by BrushyCreekXS View Post
Also, I guess I need to buy a torque wrench of some sort to be able to tighten the 12 bolts back correctly....
I would skip that part...
Just torque reasonably so to not break the bolt.
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  #275  
Old 07-24-2013, 04:22 PM
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93Prostar190 93Prostar190 is offline
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Brushy ... all good stuff.
Don't forget the tool from Napa for the fuel line removal.
The Napa relay part they crossed referenced ... NAPA has it ... GM EFI Relay ... my buddy has the Napa part but I think we found it on TeamTalk.

SKIDIM ... http://www.skidim.com/prodinfo.asp?number=R130012
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  #276  
Old 07-24-2013, 05:45 PM
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BrushyCreekXS BrushyCreekXS is offline
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Quote:
Originally Posted by 93Prostar190 View Post
Brushy ... all good stuff.
Don't forget the tool from Napa for the fuel line removal.
The Napa relay part they crossed referenced ... NAPA has it ... GM EFI Relay ... my buddy has the Napa part but I think we found it on TeamTalk.

SKIDIM ... http://www.skidim.com/prodinfo.asp?number=R130012
Excellent, thanks. Did you replace the 12 bolts or reuse them? I think I'll buy a replacement gasket for the large diameter of the opening and top plate.
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  #277  
Old 07-24-2013, 09:23 PM
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zsqure zsqure is offline
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Quote:
Originally Posted by André View Post
I would skip that part...
Just torque reasonably so to not break the bolt.
Just please be careful, it looks like there are threaded inserts encapsulated in the tank material (plastic). Over tightening the bolts will most likely pull out the threaded inserts or cause them to loosen and rotate within their cavity. Both of which will happen before the stainless steel fasteners shear off due to excess torque, that is why there is a limit.
I was not going to venture into the world of disassembly if I did not have to.
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  #278  
Old 07-25-2013, 09:39 AM
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Hrkdrivr Hrkdrivr is offline
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Quote:
Originally Posted by BrushyCreekXS View Post
Excellent, thanks. Did you replace the 12 bolts or reuse them? I think I'll buy a replacement gasket for the large diameter of the opening and top plate.
I replaced mine because most of the rubber washers were ruined, and I lost one...but you could probably just replace the rubber washers.

When I ordered a new fuel filter, it came with a new big gasket.

Ordered both the bolts and the filter from waterskis.com, skidim.com was out of both.
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  #279  
Old 07-25-2013, 10:56 AM
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BrushyCreekXS BrushyCreekXS is offline
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Quote:
Originally Posted by Hrkdrivr View Post
I replaced mine because most of the rubber washers were ruined, and I lost one...but you could probably just replace the rubber washers.

When I ordered a new fuel filter, it came with a new big gasket.

Ordered both the bolts and the filter from waterskis.com, skidim.com was out of both.
Sounds good. Thanks.
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  #280  
Old 07-25-2013, 11:09 AM
rvrrat rvrrat is offline
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Thanks for all of this great information. Is there a particular year when the fuel pump issue was resolved by MC? I have a 2009 X45 with the LY6 (awesome boat) and have over 450 hrs on it. Do I need to be concerned about fuel pump issues as well? Appreciate any insight.
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