Guests - If You want access to member only forums on HSO. You will gain access only when you Sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

  • RECEIVE THE GIFTS MEMBERS SHARE WITH YOU HERE...THEN...CREATE SOMETHING TO ENCHANT OTHERS THAT YOU WANT TO SHARE

    You know what we all love...

    When you enchant people, you fill them with delight and yourself in return. Have Fun!!!

Sign in to follow this  
Bigbartguy

Merc 75hp impeller / water pump probs ?

Recommended Posts

Pulled away from my dock last weekend and the motor was extremely loud. No alarms going off, but I looked and the motor was not shooting water out of it. I shut it down immediately. No weeds on the intake grate. My area is very weedy/silty. I pulled the lower unit and the impeller looked good but I'm replacing anyway.

Since 4th of July is looming, I've only got this weekend to fix it……or else the annual 10 day family vacation is going to be cancelled (no sense going if we have no boat to use!)

I brought the lower unit home with me, so I've bought impeller and gasket and will be installing in lower unit tonight. Thermostat should be good, since it should be shooting water whether the thermo is open or not.

Can anyone give me any advice on other things to check when I get back up to the cabin? How do typically clear the output line (small wire? Compressed air?). Anything else I should be prepared to look at? I don’t have internet access while up there so I'm trying to do my research ahead of time, since I'm only getting 1 shot at this.

Any help would be appreciated, I've never had this issue before! Thanks everyone

Share this post


Link to post
Share on other sites

Can you post a make and model number? When you install the impeller you want to know the direction for the drive shaft. If it spins clockwise you want to slowly turn it that direction when you put the pump over it. If you turn it the wrong way the vanes will not seat correctly.

Share this post


Link to post
Share on other sites

Can you explain "extremely loud"?

Usually a non-pumping water pump won't have any affect on motor noise, unless the engine's already burnt up.

marine_man

Share this post


Link to post
Share on other sites

sorry, it's a 2002 75hp Merc - model 1075412AD.

I dont know if loud is the right word (I'm certainly hoping it's not) but something didnt sound right?

I'll be sure and put the impeller in correctly and have instructions. I figure it wont hurt to replace it even if it's just a plugged line.

I've got a service manual on order but unsure if I'll have it time for the weekend.

I'm just wondering if there's something else I should be prepared to look/do?

Share this post


Link to post
Share on other sites

Well, there's no harm in trying to replace the water pump, but if you do that and things still aren't sounding right it'd be time for a compression check.

Any idea how long it hasn't been pumping water?

marine_man

Share this post


Link to post
Share on other sites

yep it was spitting water. I check it pretty often because of my dock area. Cut across an area that I dont usually go and didnt seem like it was running right (from weeds? I dont know). I looked, no water, and I shut it down.

Pulled up the motor - maybe 1 or 2 weeds going into the grate, that was it.

Share this post


Link to post
Share on other sites

spoke w/ Marina this morning. They said to install impeller, put motor in the water and fire it up. Take air compressor and shoot air into the 'pee' hole in attempt to clear. He said very often this will clear it.

if not, it becomes a very big deal...pull powerhead and get in there and manually clear the line.

Share this post


Link to post
Share on other sites

I'd pull the telltale hose off and see if you can clear whatever obstruction there is there... since your motor is a 2007 I wouldn't think your impeller would be that bad yet unless you run this motor a lot.

marine_man

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  



  • Your Responses - Share & Have Fun :)

    • It might be better to buy a small second unit and link them.    My guess is what you want is not something enough people want to justify implementing.   Personally I have a hard enough time watching a bobber.
    • Welcome to the Forum.  What brand gun is it? Would help to pick choke tubes out.  Size 6 shot should do the trick, but I'm sure more folks will chime in here. 
    • I upgraded my electronics this year to a Humminbird Helix 10. I love it so far with the exception of not being able to split the screen into 4 separate screens. The max that you can do is 3. I would really like to be able to have the map, sonar, down imaging, and side imaging on the screen at the same time while trolling. I emailed tech support and they said it's not something that is an option at this time. Right now when I'm fishing I switch back and forth between map, sonar, and DI and sonar, DI, and SI. Is there anyone else that thinks this should be an option? I don't know see why you can't customize the screen to show whichever features you prefer instead of only using the preloaded options that Humminbird decided on. I have thought about emailing the company weekly asking if they have that ability yet but wanted to see if anyone else thinks it should be an option. 
    • I just purchased a used 20 gauge for my 14 year old daughter. I hunt mostly state land for pheasants. It is a 2 3/4 auto with interchangeable chokes. What size steel shot and choke tube would you recomend for her?
    • I just got back from a work trip to MI. I could not believe the difference in ground cover. We traveled all the way from Dearborn back to Bemidji heading through the U.P.  Most of MI had very little ground cover but WI was flush, green everywhere! I only got to check a few spots at rest areas but I never saw a thing. The ground was dry at most spots on the way home. I'm gonna go hit my spot tomorrow, hopefully it hasn't been picked yet!
    • love those when ya see them!!!
    • Took the kayak crappie fishing opening weekend and when calm always bring with the DSLR with. These turtles are glad the weather has finally consistently warmed up. I always find it funny seeing turtles stacked on top of each other and found a few along with multiple species which was nice.     
    • I was going to hunt wi this weekend but fishing musky with my fly rod is what I will do instead.  Good luck!!!!!!!
    • Anyone still at it?   not sure that i will get Isaac out anymore, will still ask these last few days.   Good luck everyone.