2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

[FreeBeeTony]

Re: 2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

You say the impeller is new.
Does that mean you removed the pump?
If so, are they in the right position......input vs. output?

 

[hall832]

Re: 2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

Still over heating, I opened up the manifolds. manilfolds they looked good.(if I am not mistaken they are ceramic coated. Pulled the hoses off the cooler after the the pressure side of the pump and no restriction. The impeller pieces had to lodge somewhere. Not sure where to check now.

 

[hall832]

Re: 2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

You say the impeller is new.
Does that mean you removed the pump?
If so, are they in the right position......input vs. output?

As the hoses are two different sizes for pick-up and out let on the pump, no chance of messing that up.

 

[alldodge]

Re: 2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

I pulled the hose from the pump to the transom tried water pressure and air pressure nothing.
Pretty sure fun times is right on. Gonna pull outdrive and check it on Saturday. Let you guys know what is what. Also pulled both plugs and nothing.

Did you clear the blockage between the pump and the drive?

Still over heating, I opened up the manifolds. manilfolds they looked good.(if I am not mistaken they are ceramic coated. Pulled the hoses off the cooler after the the pressure side of the pump and no restriction. The impeller pieces had to lodge somewhere. Not sure where to check now.

Is unlikely the impeller made it past the cooler unless they where pretty small. Next stop is the thermostat housing and block

 

[hall832]

Re: 2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

I rerouted the pick up to a through hull. As I read a merc update about this problem. I pulled the thermostat and housing no restriction.

 

[alldodge]

Re: 2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

So your getting water now and it is coming out the exhaust, but it is still over heating, correct?

 

[tazrig]

Re: 2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

You said you checked the manifolds have you checked the risers both where the water enters and where it exits?

 

[Scott Danforth]

Re: 2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

the first place I would look after the raw water pump for the pieces of the impeller is the power steering cooler. from there the fuel module

 

[Fun Times]

Re: 2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

There was a run from the impeller manufacturer sometime mid last year that the impellers were being made too short and not allowing a prime. Maybe you picked up one of those bad impellers.

Halfway down in the link is a photo of the difference.
New impeller won't pump water. ARRGG - Rinker Boats

 

[hall832]

Re: 2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

So ran it for a little bit today a couple times.
1. I have good pressure at the smart craft gauges.
2. Pulled off all hoses and have good circulation.
3. I thought these manifolds were ceramic coated.
4. Slowly climbs up past 175 and then alarm.
5. Manifolds and Risers? I looked at them and they really didn't look like the culprit.
6. What else could it be.
7. ???

 

[alldodge]

Re: 2006 6.2 Mercruiser. Bravo three. ate impeller. no water to the raw water pump.

So ran it for a little bit today a couple times.
1. I have good pressure at the smart craft gauges.
2. Pulled off all hoses and have good circulation.
3. I thought these manifolds were ceramic coated.
4. Slowly climbs up past 175 and then alarm.
5. Manifolds and Risers? I looked at them and they really didn't look like the culprit.
6. What else could it be.
7. ???

As before "Are you getting water out the exhaust and does it equal the water going in?"

How did you verify good circulation, exactly what did you do?