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Old 07 November 2010, 15:29   #1
dnv
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Mercruiser 1.7 dti reluctant to start

Hi there

After a break of two weeks I went out today.
The diesel was very reluctant to start, it took some twenty seconds turning with the starter.

The temperatures are sub-zero during night now, just above zero over the day. The battery meter showed 14+ V right after the engine started.

Is this typical for the merc in cold weather, do you have advice for me?

thanks in advance
Jan
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Old 07 November 2010, 15:36   #2
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sounds like glow plugs not doing their bit,i dont know but do you have a key activated glow plugs or a push button?? i assume you have fuel and bled properly.
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Old 07 November 2010, 15:45   #3
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Other thing to check on those engines is the cold valve clearences.
they can close up enough to lose compression when cold, when the head warms up a bit and expands they open up and run fine.
I haven't come across it on a marinised version yet but the car versions were well known for it.
Also as matt points out 1 heater plug out will make a HUGE difference to starting. when I had one out on one of mine it chased the starter, firing but not catching for 20 or so seconds before firing up!
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Old 08 November 2010, 03:34   #4
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I've had something similar where air was getting in the system overnight. Turned out to be a faulty return (cracked) pipe so it was 'draining back' when left for any period. It was then a bit reluctant to start in the morning.
Just my 2p worth
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Old 08 November 2010, 05:16   #5
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You could always try "Easystart", very sparingly.

Oh the smell of Easystart on a cold frosty morning........
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Old 09 November 2010, 16:05   #6
dnv
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Thank you for your replies. I suspect the valves, will let an mechie check it out

regarss
Jan
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Old 18 November 2010, 07:31   #7
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I may be wrong, but I dont think these engines have glow plugs.
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