GM BB Fuel injected ?????

Bt Doctur

Supreme Mariner
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Aug 29, 2004
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19,092
Stbd motor is fine, Port motor with key "on" no fuel pump noise prior to "start" ,motor will crank over,has spark, will not fire.When the "battery parallel" is operated the fuel pump does make noise to pressureize and shuts down.Motor still willl not start.fuel line selectors are on stbd fuel system.Factory wiring.system ,not butcherd up.Never saw this before ,need direction.
Leave pvt message and or # to talk.
 

Don S

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Re: GM BB Fuel injected ?????

Merc, Volvo, Year, Model/SN.
 

Bt Doctur

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Re: GM BB Fuel injected ?????

How could I miss that? 2001 33` Wellcraft Coastal M/C inboards
 

Don S

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Re: GM BB Fuel injected ?????

Got a SN for the engine? Merc gives no info by year and boat make
 

Bt Doctur

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Re: GM BB Fuel injected ?????

Will be there by wed.for the SN`s. Will also post the answer to this riddle when i find it.
 

Bt Doctur

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Re: GM BB Fuel injected ?????

bump
should have ser #`s by sat.
 

Bt Doctur

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Re: GM BB Fuel injected ?????

As it turns out the port fuel pump was sticking/not running when the key was turned on.Factory wiring turns the stbd pump on with the boost switch for some reason, that was the pump we heard running.
after checking the relays and pump wiring connectors for power it was determined that the pump was stuck/jammed,etc. a few good whacks freed it up and it started working with the key in the on position and motor started with no problems.boats 3 years old and already the M/C part is superseded to a new unit with a different type of "cool can". looking into finding the SB that details this.Supposedly cost is $300.00 for the new unit.
 

Reel Poor

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Jan 29, 2005
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Re: GM BB Fuel injected ?????

Was it the high pressure pump or the low pressure pump. They don't like water and will rust and stick. If it's the high pressure pump pull the fuel inlet fitting and look at the screen in there, I'll bet you see rust staining.
 

Bt Doctur

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19,092
Re: GM BB Fuel injected ?????

Reel, from what I can tell there is only the 1 pump with the cool can setup mounted off the lower motor mount.2 braided lines from the sep.to the pump,main line up to the rail.
 
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