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b06 Crusader Captainbs Choice 57 Fuel Pump Problem

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larshar

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"I have 2006 Crusader Captain&

"I have 2006 Crusader Captain's Choice 5.7's installed in my 36' Chris Craft. Today, I could not get the port engine to start after changing and "priming" the fuel/water separator. I noticed that the fuel pump does not seem to be working and no fuel is getting to the bowl of the F/W separator, let alone to the injectors. The engine only has about 80 hours on it. Could it be something as simple as a blown fuse possibly, or something more serious? It was working before I went to change the F/W filter. Thank you.

Larry"
 
"Electric pump? If so, see if

"Electric pump? If so, see if the oil pressure switch is working. (It stops the pump when oil pressure is NOT present, as a safety feature.) You can jumper out the switch to test the circuit.

Mechanical pump? Look for a clogged anti-siphon valve at the tank.

Jeff"
 
"Thanks for replying back. It

"Thanks for replying back. It is an electric pump. Normally, the pump will run with the engine off after turning the key to the "on" position for a short spell until it builds up enough pressure I assume. This is how the manual reccommends you prime the F/W separator, by turning the key on for 5 seconds or so and then off (repeat up to 3 times). All this is done with the engine off and no oil pressure, so is this switch still something I need to look at? Thanks.

Larry"
 
"Better check the fuses, start

"Better check the fuses, start the with the easy stuff, & don't over look the obvious.

Can you hear the pump when you cycle the key?"
 
"Thank you Fred and no, I cann

"Thank you Fred and no, I cannot hear the pump at all when I cycle the key. When I do the same for the starboard engine, I can easily hear the fuel pump running."
 
"Larry,

You actually have t

"Larry,

You actually have two pumps. A low pressure or "Primary" pump and a high pressure pump.

The primary pump is very quiet and you don't normally hear this one. The one you are used to hearing is the high pressure pump. this pump is located inside the fuel control cell or "FCC". That's the black canister on the port front of the engine.

The first thing to check is the voltage to the pumps.

6" from each pump is a plug-in connector which will allow you to unplug each pump and test the connector for power.

The pumps cycles for 5 sec. after the key is turned on so you only have a short time to make this test. I would recommend having a helper operate the ignition switch.

Providing the connection is good, power at the connector and no pump operation means the pump is bad.

Let us know what you find and if you give me your SN I can give you the PN for the pump.

Good luck,
Rick

let me know if I can help: http://www.linesixservices.com/"
 
"Slick design, Lawrence. I sus

"Slick design, Lawrence. I suspect the circuit that is supposed to turn the pump on is open somehow.

Jeff"
 
"I couldn't agree with you

"I couldn't agree with you more Jeff. I am really hoping it's just a fuse. I will get back down there this morning. There are 3-20 amp fuses in a fuse block next to the master circuit breaker. 1 is for the fuel pump, and the other two are for the ECM and the injectors.

Thanks for writing Rick. I don't have that "FCC" on my engine. On the '06 I have , it is the returnless type of fuel system and it has the Racor metal bowl type F/W separator mounted high on the front starboard side of the engine. There is a low pressure fuel pump on the engine somewhere, but I am not that familiar with where it is located yet. The fuel pump that I can hear well is mounted on the bottom, mid-section starboard side of my port engine near the oil cooler. I am really hoping fuse first, then if not, it must be the pump. Thanks again.

Larry"
 
"Larry,

This is the fuel sy

"Larry,

This is the fuel system of a 2006 5.7 EFI with the returnless fuel system. That black canister is the FCC, it is not a separator although it dies contain a filter. It also contains your high pressure fuel pump. Your primary pump is located down by the engine mount on the port side.

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"Rick,

Thanks again for get

"Rick,

Thanks again for getting back. I do not have the black cannister FCC on my engine. There is a diagram of another version of this engine's fuel system, but I can't figure out how to send just the page. Regardless, there are 3-20 amp fuses next to the main circuit breaker on the engine that go to the fuel pump, ECM, and the injectors. The fuel pump fuse was blown, which is what I was looking for. What happened after that is still a mystery. I replaced that fuse and thought the problem was solved...the engine started and ran fine for about 5 minutes and then the fuse blew again. I replaced it again and was able to get the boat around to the fuel dock to fill the tank. I ran the engine for a good while and the fuse did not blow again, but it gets really hot to the touch. I inspected the same fuses on the starboard engine while it was running and they are all cool to the touch. Not sure why that 20 amp fuel pump fuse is getting hot still. Any ideas? Thanks."
 
"That's what I meant to me

"That's what I meant to mention in my prior post. If the fuse is blown, it's blown for a reason and replacing it will most likely result is it blowing again. That reason is most likely the pump. Regarding your pump configuration, I'm sorry, I overlooked your mention of the returnless system. The returnless system has a single pump mounted inside a fuel cooler and is located in the same place as the primary pump on the return type system. You can trace the harness, but it's a very short run from the pump to the fuse and it's unlikely the harness is shorted.

Rick"
 
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