Boat not tsking in water after service and impellor change

(piggie) · (piggie) **Join Date: Feb 2010** 03-10-2011, 10:43 PM

ok so got boat serviced last week , put in water the day i got it bacxk and it over heated . No water coming into intake. Took it back and service man changed blown impellor and took out again this afternoon and over heated again with brand new impellor . disconnected intake pipes and started eingine and no water coming up through impellor .. Any thoughts on what may be wrong ?

(mastercraft_98)

The intake lines going to the housing might be swaped I burnt 2 impellers up before i figuered that out

(mhunter) · (mhunter) **Join Date: Mar 2008** 03-11-2011, 5:41 AM

Does your pump look like this ?
It is possible to mount it upsidedown then it wont draw water.

(chris4x4gill2) · (chris4x4gill2) **Join Date: Sep 2009** 03-11-2011, 6:09 AM

Pump installed backwards like Michael said, loose connections at either pump, strainer or intake, or hoses are swapped. Have you looked for an obstruction at the intake grate?

My bet is that the pumps backwards

stumpf101 03-11-2011, 7:33 AM

DUMB QUESTION: Is the intake valve open?

(denverd1)

it will blow bubbles if its backwards. put the intake hose in a bucket of water to test it.

David what valve are you referring to? Should be an open hose to fresh water

edit.

I'd find another boat shop/mech ASAP

(ryand121) · (ryand121) **Join Date: Feb 2007** 03-11-2011, 7:52 AM

I believe David is referring to the ball valve in line with the water pick-up line. If you bust your hose, that valve will keep you from sinking. Should be brass, probably a 1" valve. Hope this helps.

(fly135) · (fly135) **Join Date: Jun 2004** 03-11-2011, 7:57 AM

The two situations I know are the pump backwards as mentioned, and rubber bits from the old impeller lodged in and clogging the thermostat.

(cadunkle)

Plugged up trans cooler?

(piggie) · (piggie) **Join Date: Feb 2010** 03-11-2011, 8:12 AM

ok my pump looks like the one pictured but my hoses are on the opposite sides to the one pictured, I disconnected all hoses from the impellor back and checked them and there all clear. We had the top hose off the impellor and i started the boat while in the water and it is turning . We then re conected all the hoses and then disconnected the hose from the intake end and started it and there seamed to be no suction(i assumed it would be like a vacume cleaner type of suction)

(piggie) · (piggie) **Join Date: Feb 2010** 03-11-2011, 11:50 AM

Ok sick of waiting for this fool(the guy who serviced the boat) to ring me back and everytime i try call him he wont answer his phone , so im heading outside to turn the pump around and see if it fixes the problem

(ldr) · (ldr) **Join Date: Nov 2002** 03-11-2011, 12:04 PM

I don't know if this would happen with a metal pump but with my plastic pump I drew sand up through the impeller and it chewed up the inside of the pump housing. maybe the housing is marred up on the inside to the point that it's not drawing suction.

(piggie) · (piggie) **Join Date: Feb 2010** 03-11-2011, 2:19 PM

Thanks Heaps for all the input people of wakeworld. I turned the pump over so it looked the the picture above and found that when i did someone had actually written in ball point pen TOP on the top .. So refitted everything and gave it a test by sticking the intake hose in a bucket of water and it swollewed that up pretty quick so reconnected the hose and shot down to the local boat ramp. sat the boat in the water and started her up and water was flowing smoothly through the intake pipe

left her idling for a while then took it up to 3k rpm and sat it there for a bit. temp got to halfway and stayed there rock solid

So looks like ill be going wake boarding today and ringing the guy that serviced it on monday morning to see if he is willing to refund my $170(nz) for the impeeler he replaced seeing as the reason it would have chewed out was becuase he had fitted the pump backwards. He even admitted when i took it back the 1st time that he removed the pump and inspected the impeller and it was fine so he was unsure why it overheated the 1st time .. Knob Jockey is all i can say and next time ill be trying a new service man ..

(piggie) · (piggie) **Join Date: Feb 2010** 03-11-2011, 2:29 PM

P.S im sorry about my shocking typing when i started the thread to , As you can imagine i wasnt happy when i found out it was still over heating, so i had consumed a few vodkas

(chris4x4gill2) · (chris4x4gill2) **Join Date: Sep 2009** 03-11-2011, 6:20 PM

Its easy to do if your not careful. I did the same myself last year, figured it out quickly but it still chewed up a brand new impeller.

(piggie) · (piggie) **Join Date: Feb 2010** 03-11-2011, 9:38 PM

Awesome afternoon boarding .. thanks again guys

Im as happy as can be to have my baby up and running again

(piggie) · (piggie) **Join Date: Feb 2010** 03-11-2011, 9:39 PM

Quote:

Originally Posted by chris4x4gill2

Its easy to do if your not careful. I did the same myself last year, figured it out quickly but it still chewed up a brand new impeller.

Yeah but you would think a guy who services boats for a living would know what he was doing and even if he screwed up the 1st time you would think he would check it the 2nd time..