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| T O P I C R E V I E W |
| Tom Morgan |
Posted - 27 Jan 2019 : 16:52:24
Ancient Honda 9.9 hp, recoil start. Clean and dry. Oil OK, new plugs.
I'd like to ask for advice about a starting problem and I hope fellow members won't mind if I describe in some detail what has been happening in the past.
My outboard is either:
a) a difficult one to start, or
b) I just haven't got the hang of it yet (Still an inexperienced owner).
I had been running the motor for 10 or 15 minutes or so during each winter weekend visit and letting it run dry afterwards. It was taking me a long time to start it. So after a few visits, I decided not to run the motor dry and see if that made any difference next time. The first visit after that, it started second pull (choke, and revs at tickover). The second visit - four or five pulls. The third visit was today and it wouldn't start at all, and the motor kicked back and pulled the starter toggle out of my hands twice. If it was my kickstart motorbike, I'd say the timing was out, but I can't see how the timing could change over the last week, when the motor has just been hanging off the back of the boat doing nothing. Can anyone advise me, please?
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| 15 L A T E S T R E P L I E S (Newest First) |
| Margaret |
Posted - 02 Mar 2019 : 10:27:29
The only thing we have had fail was the cdi unit which controls the ingnition system. Our outboard would suddenly cutout and stop, I originally thought it was a fuel problem, after several checks the engine would run perfectly for hours, and then the same problem, the engine was checked out by a mechanic, but he could not find the fault. I was advised to tap the cdi unit with a screwdriver handle when the engine was running,and sure enough the engine stopped. It’s a sealed unit so cannot be repaired, an expensive replacement, but it solved my problem.
J.L mee |
| Tom Morgan |
Posted - 01 Mar 2019 : 16:32:44
Yes, Margaret, have used the boat,motor, priming bulb etc successfully since buying the boat in October. And using 4-star petrol. I have a fair bit of experience of simple 4-stroke engines from my other hobby - ancient motorcycles. But my knowledge of the outboard "form" is limited, though I'm learning fast. This has me stumped, and the motor is now going to an expert for a few days - see what he can do. |
| Margaret |
Posted - 01 Mar 2019 : 07:51:09
On the fuel line between the tank and the tank and the push on connector on the engine there should be a rubber bulb, squeeze this several times until it feels hard. This should mean the fuel is getting to the carb. Just disconnect the engine connector, you should be able to smell the petrol., the connector has a little ball valve which prevents the petrol flowing out when disconnected. Silly question I know, but you are using straight unleaded petrol not a two stroke mix, all Hondas are four stroke.
J.L mee |
| Tom Morgan |
Posted - 26 Feb 2019 : 10:17:36
I'm back again. The motor is now off the boat and on a stand in the garden. The timing marks are set correctly. I cleaned the carb with carb cleaner (although all the jets and holes were clear) and by blowing down the inlet tube I could see that the float needle was opening and closing correctly. The plugs are sparking. So all seems well, but it won't start! I would expect the cylinders to be flooding, but they're not.
I don't know if fellow members would agree, but I'm still not 100% certain that thefuel's getting through. Any ideas?
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| Tom Morgan |
Posted - 17 Feb 2019 : 18:52:35
Thanks again, Margaret. I checked the fuel line on my motor and there isn't one. I bought one this afternoon.
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| Margaret |
Posted - 17 Feb 2019 : 07:23:38
Yes.,it is , just remove the motor cover and you can see it in the fuel line to the carb. Honda recommends that you change it at every service. Very easy to do it has an arrow on it for the direction of flow.
J.L mee |
| Tom Morgan |
Posted - 16 Feb 2019 : 18:12:49
Margaret - is the filter one of those simple see-through plastic push-on ones with a yellow filter element inside? |
| Margaret |
Posted - 16 Feb 2019 : 11:32:40
Just another point our Honda outboard has an in-line filter just before the carb, I think this is a standard fitting,we change it every year, they are very cheap.
J.L mee |
| Margaret |
Posted - 16 Feb 2019 : 11:28:35
Check the fuel line, modern petrol has ethanol in it and this can attack older fuel lines causing them to rot and break up. I would change it if it is quite old.
J.L mee |
| Tom Morgan |
Posted - 15 Feb 2019 : 10:01:00
Thanks, df. That's another thing for me to look at.
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| df |
Posted - 15 Feb 2019 : 08:05:33
Another thing to check is the fuel pickup pipe inside the tank, I've had one that wasn't very good with modern fuel and split fairly high up so it was fine when full but messed about once the level dropped.
It would be ok once running but getting it primed in the first place was a complete git.
Once the pickup was changed it was fine.
I didn't think it would be timing on a modern motor, unless ely boat chandlers have had it apart as they have no understanding about cam timing.....
NBAS--The communal colostomy bag of the boating community.
 Visit leomagill.co.uk |
| Tom Morgan |
Posted - 14 Feb 2019 : 21:36:59
Thanks, Margaret. It's a plastic tank, quite clean on the outside, but I don't know how clean it is on the inside. And there's no fuel filter that I can see, anywhere in the fuel line. Next thing is to take the motor off the boat (I want to change the oil, anyway) and have a look at the carburetter.
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| Margaret |
Posted - 14 Feb 2019 : 21:13:42
Have a look in the fuel tank, ours is very old but clean and showing no signs of corrosion,if it’s corroded ,rust could be the problem.
J.L mee |
| Tom Morgan |
Posted - 14 Feb 2019 : 17:48:56
Well, I went over to the boat today, with a gallon of fuel which half-filled the tank. At first, I had the old refusing to start, spitting back through the carb, etc. This lasted quite a long time, with pauses between attempts. I followed trickyblue's advice on technique.
Then after another break, it started second pull and ran like a little sewing-machine. It revved, dropped back down and ticked over nicely - so I don't think there's a timing issue. Stopping the motor and restarting was no trouble.
But after having been stopped for 20 minutes, it wouldn't re-start and was back to spitting back.
20 minutes after that, it started first pull but didn't run so well, with quite a bit of hesitation.
So what do you think it might be? I'm leaning towards a fuel supply issue. I think that when I did recently run out of fuel, the motor might have sucked up some crud from the bottom of the tank. |
| Margaret |
Posted - 12 Feb 2019 : 16:49:23
We have a Honda 9.9 from 1990. It always starts straight away, even if it’s not been run for a few weeks. We always pump the fuel line bulb hard,and set it to a fast idle, full choke to start and after a few seconds running push it right in, it doesn’t seem to need the choke for long even in cold weather. Just for the record we have never had any problem with stale petrol. If it runs smoothly when it does start there can’t be a lot wrong with the timing.
J.L mee |
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