Mariner 135 V6 Starting ?

paddlers · 10 August 2013, 11:45

I have a Mariner 135 V6 that is @1990 vintage. What a lovely noise it makes but I haven't got the technique right for starting it!
Not too bad from cold, lever lifted up and a bit of choke & were away but it does stall if you're slow into gear...
More of an issue if we're fishing for half an hour, if you miss the first fire up it can spin without even a cough. Choke and it floods....
Currently trying to lift the cold lever before turning it off !!

Any clues welcome please ?

GONE FISHING · 10 August 2013, 21:47

HI, paddlers.
I SHOULD START BY LOOKING AT THE PICK UP TIMING.
NEED HELP?.
REGARDS,
GONE FISHING
P/M ME OR 07974 716522

Bigmuz7 · 10 August 2013, 23:08

Needs its jets adjusting .. mine was the same .. also died when trying pull up a skier

paddlers · 11 August 2013, 07:15

Cheers for that. We're a week into our fortnight on Kintyre so don't want to start stripping anything or risk losing the rest of the holiday!
It always starts eventually but it's a bit of a lottery. Tickover's high if I lift the lever on the remote but of course won't then go into gear.
What about if I adjust it so that it ticks over at a bit higher rpm ? What's the main effect of lifting the lever on the remote ?
Thanks.

GONE FISHING · 11 August 2013, 08:15

HI,paddlers
LIFTING THE COLD START LEVER ADVANCES THE TIMING,

IDEL CARB JETS SHOULD BE SET AT 3/4 OF A TURN FROM LIGHTLY SEATED,
REGARDS,
GONE FISHING.

Festinghouse · 11 August 2013, 08:28

id say the timing needs advancing slightly - try half or even a full turn of the screw. this should help the engine to 'catch' and also have the effect of increasing the idle speed. it will also help stop the engine fouling its plugs whilst idling for any length of time. just be careful not to advance too far.

paddlers · 11 August 2013, 08:35

Million dollar question. Where's the timing screw to adjust ? I'm no mechanic, happy to change the impeller, thermostats, oil etc etc but have a morbid fear of carbs & timing...!

Jizm · 11 August 2013, 08:43

Quote:

Originally Posted by paddlers

Million dollar question. Where's the timing screw to adjust ? I'm no mechanic, happy to change the impeller, thermostats, oil etc etc but have a morbid fear of carbs & timing...!

Golden rule:
Take note of any existing settings before you adjust them.

GONE FISHING · 11 August 2013, 08:46

Hi,
look at the carbs from the port & starboabd side,
you will see a silver screw with a spring on it 1 screw to each carb, thats 3 each side,
gone fishing.

Nos4r2 · 11 August 2013, 11:50

Quote:

Originally Posted by GONE FISHING

Hi,
look at the carbs from the port & starboabd side,
you will see a silver screw with a spring on it 1 screw to each carb, thats 3 each side,
gone fishing.

No it's not. Screws on the carb don't do anything to timing.

You need the idle stop screw that's on the arm attached to the control cable.

paddlers · 11 August 2013, 12:00

Just been down & had a look! I can see the mixture screws on the carbs but to be honest I don't want to mess about too much as it really flies at full chat.
Nos, I presume you mean the bolt @ M6 with a rubber end and locknut, there are more than one. Is it the one on the arm that runs up under the flywheel that needs adjusting in a little? What sort of rpm is ok on tickover ?
Thanks

Nos4r2 · 11 August 2013, 12:13

From memory yes, thats the one.Make sure you know where you have to reset it to if you need to as well. Don't adjust more than one thing at a time.

What's your normal tickover RPM? You don't want to go much over 800 if you can help it.

paddlers · 11 August 2013, 12:18

About 500 rpm, I'm waiting for the tide to come in so that I can have a fiddle with it !

Nos4r2 · 11 August 2013, 13:24

Take it up to about 600 to 650 as a starter.

Festinghouse · 11 August 2013, 15:55

and yes, its the arm that goes under the flywheel - this is attached to the trigger assembly which turns within the stator. looking down on the engine, the flywheel should rotate clockwise, turn the screw in the direction that would move the arm in an anti clockwise direction - this makes the ignition fire earlier and so advancing. remember only half a turn at a time, remembering how much you have moved it.

paddlers · 11 August 2013, 16:07

Done about a turn & a half to @ 700 rpm. Today it started first turn of the key every time when warm and no issues engaging gears so fingers crossed.
She who must be obeyed has talked about skiing tomorrow plus fishing so I'll know more then. Certainly seems to have improved things a LOT.
One bit of advice I can pass on, don't rest your hand on the flywheel cover & get your thumb underneath.......It's still stinging!
Many thanks for all the help, it's what makes this forum worth joining (if you don't mind the occasional bit of dry humour !!).

Festinghouse · 11 August 2013, 21:16

really glad its sorted, bet its like having a new engine now!

paddlers · 11 August 2013, 21:32

I'll update you tomorrow ! It's a right PITA when you can't start on the turn of the key, fingers crossed.

paddlers · 13 August 2013, 06:14

Seems much better we hit 47 mph or around 40 knots according to my wifes I phone app.........
Boat fired up pretty much straight away with a little choke. It's amazing how quickly it empties the tank at full chat, fortunately we live miles from the coast or else I'd be a lot more skint than I am now.......

Thanks for all the input fellas

Festinghouse · 13 August 2013, 08:31

good stuff, ive sorted two of my engines just by advancing them slightly