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Old 15 August 2013, 15:48   #1
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Country: UK - England
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Starting problems.....

Hi all, this might be a bit of beginners ignorance but, I'm having trouble getting my Mariner 90 started, just been serviced and was all tickety-boo, but its taking me a good 5mins to get it running. Firstly just spins over, no problem there then it starts to get a bit smokey (2stroke) then the odd splutter then after a minute or so finally starts turning under its own steam..... Runs like a dream once she's warm.... Any suggestions welcome....

Thanks all,

Al.
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Old 15 August 2013, 16:07   #2
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Choke?Idle mixture?
Wrong/fouled plug?
Timing?
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Old 15 August 2013, 16:08   #3
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Take it back to the guys that serviced it and take their belongings until it starts.
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Old 15 August 2013, 16:37   #4
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RIBase
just been serviced , you answer your own question take it back
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Old 16 August 2013, 05:04   #5
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OK, before you do, IF it's a Merc based Mariner it might be one of the ones with a slightly un-conventional choke..... which wen set up correctly don't follow the "normal" rules of starting.

Traditional choke does what you expect - blocks the air flow so the fuel - air mix gets higher.

The Merc "enrichener" chokes basically open a small fuel valve & add more fuel. Thing is if you lift the fist idle lever, you are letting more air in, so the Air- fuel ratio goes back to "normal-ish".

It sounds like if you are cranking with both, you will be pouring fuel in, but at too lean a mix to fire when cold. Needless to say when it finally accumuilates enough fuel in the analsd of the engine to actually fire, there's way too much fuel, hence the smoke.



So, When on initial start, don't lift the fiast idle lever - until it fires.
My cold start sequence goes like this:

"Choke" on - no fast ilde - turn key
When it fires - let go the choke switch and try to get the fast idle lever up.
- IF I can get the fast idle lever up quick enough, it keeps going.
- If not, second start is without "choke" and the fast idle lever up. - The fuel lying around in the engine from the first attempt then does what it's supposed to with the extra air.


Having said that, if it's a Yam based one all that I've just typed is irrelevant! Try it before you take it back.
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Old 16 August 2013, 05:14   #6
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So my starting procedure, (obvioulsy once the fuel bulb is pumped and hard).

Turn the engine over, if it doesn't catch more or less immediatelty, i.e. 3 to 4 turns, press the key in for choke. If that's not an immediate start lift the idle lever.

Doesn't always kick in first time, but if I switch off and repeat it always starts by the 3rd go
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