Cooked impeller.

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Cooked impeller.

Postby AndrewT » Mon Feb 27, 2017 7:10 am

Almost had a major catastrophe today,my VP 5.0GX-IE has a motor flush hose connected to the raw water intake,
I just hook up the garden hose to it and I can run it without using engine muffs.I started her today like I always do before
each trip to make sure she runs fine.We launch her at the ramp idle off and slowly speed up when I hear a strange noise
like a whistle and then a screech .Anyway I forgot to close the water hose intake and I cooked the impeller in the raw water pump ,the temperature went up to 200F and the overheat alarm started to beep.
We managed to limp to the ramp.Upon dismantling and inspection that's what I found :
Image
Found most of the fins from the impeller and a bit of really fine black rubber dust,cleaned it up and popped in a good second hand impeller,reassembled it and ran on the hose,temp went up to 150F and stayed there.
Touch wood everything is OK.
2005 Interceptor 212
Volvo 5.0 GXi 270hp
21P 14.5 3B SS prop and 19P 4B SS for wakeboarding and tubing.
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Re: Cooked impeller.

Postby rward182 » Wed Mar 01, 2017 2:46 pm

That is one of the things I like about the Volvo setup. You can't change out an impeller on the water with a Mercruiser.

Glad you were able to fix it quick and enjoy the outing.
Roy
Rendon, TX
2007 Caravelle LS187, 4.3l 190 hp Mercruiser
2003 Chevy Duramax 4x4
2003 Forest River Wildcat fifth wheel
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Re: Cooked impeller.

Postby Swerve » Thu Mar 02, 2017 9:50 pm

Wow, close call. Bet you wont do that again.
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Re: Cooked impeller.

Postby AndrewT » Fri Mar 03, 2017 1:44 am

Felt like a total idiot,definitely won't do it again.
2005 Interceptor 212
Volvo 5.0 GXi 270hp
21P 14.5 3B SS prop and 19P 4B SS for wakeboarding and tubing.
AndrewT
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Re: Cooked impeller.

Postby RTWILL725 » Thu Apr 27, 2017 2:05 pm

If you find that your impeller is not complete do the lost vanes usually pass though the system with causing blockage issues? I am replacing one today on my bravo. I have the serpentine driven brass pump.
2004 Interceptor 212
350Mag MPI
Bavo 1X Diesel 1.5
Vengeance 21p
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Re: Cooked impeller.

Postby AndrewT » Fri Apr 28, 2017 6:34 am

Yeah, you have to try to find the missing bits.I think I found all of mine plus a lot of rubber dust.I had to take the hoses off and flush her out.Been out about 3 times after and she seems to be100%
2005 Interceptor 212
Volvo 5.0 GXi 270hp
21P 14.5 3B SS prop and 19P 4B SS for wakeboarding and tubing.
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Re: Cooked impeller.

Postby Scoots » Fri Apr 28, 2017 10:04 am

Wow man, glad you didnt do any major damage! Just because my boat is new to me, Ive been thinking about doing a impeller replacement just for piece of mind. Too much going on and too damn lazy, you have me thinking again!
04 212 Interceptor 5.7 Gi
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Re: Cooked impeller.

Postby AndrewT » Sat Apr 29, 2017 12:04 am

Scoots wrote:Wow man, glad you didnt do any major damage! Just because my boat is new to me, Ive been thinking about doing a impeller replacement just for piece of mind. Too much going on and too damn lazy, you have me thinking again!

On the VP like yours it is only a 1/2 hour job. 2 hose clamps,2 9/16 bolts and 4 x 5/16 screws.
2005 Interceptor 212
Volvo 5.0 GXi 270hp
21P 14.5 3B SS prop and 19P 4B SS for wakeboarding and tubing.
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Re: Cooked impeller.

Postby Scoots » Sat Apr 29, 2017 12:38 am

Yep, Ordered a VP kit today. Going to change it out just as a preventative.
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Re: Cooked impeller.

Postby AndrewT » Sun Apr 30, 2017 8:45 am

I do mine every couple of years unless I cook the bastard,I was a bit pissed off because the impeller was changed at the beginning of the season.Mechanic mentioned that is is good to start the motor in the off season on regular basis,to stop the impeller from squashing the vanes,may not be practical in your colder areas with the boat being winterized.
2005 Interceptor 212
Volvo 5.0 GXi 270hp
21P 14.5 3B SS prop and 19P 4B SS for wakeboarding and tubing.
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Re: Cooked impeller.

Postby Scoots » Sun Apr 30, 2017 11:26 am

Yeah, considering how affordable the kit is, I would opt to stay winterized and change it the beginning of every season. Doesnt look like a long or complicated job.
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