40hp outboard sooooo noisey

cobbly123 · 27 Mar 2012 at 21:51

Hi i ran outboard up yesterday (first time this year) have changed plugs and oil and now it sounds sooo noisey. It runs sweet plenty of water circulating, had it running for about 15 min and it didnt get louder or quieter. Any ideas please

Amp34 · 27 Mar 2012 at 22:26

Outboards are generally very noisy!

It may just be because the prop is out of the water (if you're running it using a hosepipe or something)?

cobbly123 · 27 Mar 2012 at 22:42

No had it running in a bin of water, will take it out at weekend and see whats what. Am sure it wasnt that loud lol

thanks

Scougar · 28 Mar 2012 at 00:34

Did you put enough oil in? Did you prime the engine before starting it?

cobbly123 · 28 Mar 2012 at 02:55

Yes i put in what it said in the book no didnt prime it thought it would do it itself

marmalade · 28 Mar 2012 at 10:36

get a 4 stroke! obviously noisier in a metal oil barrel

Scougar · 28 Mar 2012 at 16:59

Have you flushed and changed this engine in a confined space before (assuming you are in a confined spae?)... could it just be that you are getting plenty of echoes/reflections?

DiscoKandy · 29 Mar 2012 at 22:32

marmalade said:
get a 4 stroke! obviously noisier in a metal oil barrel

He's just changed the oil, it probably is a 4 stroke.

What is the engine model, hours, age ?

cobbly123 · 31 Mar 2012 at 16:28

Hi
its a honda 40hp 4 stroke year about 2000-2002 no idea of running hours, what ever was not working correct is ok now. It was very loud for about 30 seconds today then went quiet again, maybe with being lay down in boot of car.
Thanks

DiscoKandy · 4 Apr 2012 at 12:49

Sure you know this already, but be careful laying 4 strokes down on their side, should be a label indicating the correct side.

Laying the wrong way can result in oil leaking from the sump and ending up on filters etc and worst case into the cylinders.

Skidder · 4 Apr 2012 at 15:02

DiscoKandy said:
Sure you know this already, but be careful laying 4 strokes down on their side, should be a label indicating the correct side.

Laying the wrong way can result in oil leaking from the sump and ending up on filters etc and worst case into the cylinders.

helpfully someone at my boat club turned mine from the correct side to the wrong side last year

DiscoKandy · 4 Apr 2012 at 16:27

Superb! Did it run ok ? Normally have to whip the plugs out and turn it over a few times...

Skidder · 13 Apr 2012 at 15:32

DiscoKandy said:
Superb! Did it run ok ? Normally have to whip the plugs out and turn it over a few times...

Yep, had a bit of job to get it started but was fine afterwards. They are little troopers the honda four strokes.

cobbly123 · 11 May 2012 at 23:53

update:
started outboard today very loud again. think the oil pump is dying :mad:

time to start looking for another motor me thinks

Bones · 21 May 2012 at 11:27

are you comparing the noise levels in the same environment?

Have you tried it on the water?

bledd · 22 May 2012 at 10:26

Check how much a new oil pump is!

http://www.hondaoriginalparts.com/

Might be worth dropping it at your car garage and ask them to look at it for you

cobbly123 · 29 May 2012 at 18:16

Yes had it out on water both times once nice and quiet second time rattled it head off,
Thanks i took it to our local boat place he is going to strip it down and have a look, he thinks it could be @@@@ in the oil pump or in a oilway.
cheers

Mal Cullen · 20 Jul 2012 at 11:24

Something is in your pipes mate... Could possibly work its way through but really needs to be stripped down.