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Old 05 January 2008, 17:43   #1
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I guess this looks pretty normal for a 2 stroke?

But what should the plug gap be for a 150 Evinrude DI?
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Old 05 January 2008, 20:13   #2
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hi andy

google brp_sparkplugchart2007.pdf .030

hope this helps

andy
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Old 05 January 2008, 20:59   #3
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But what should the plug gap be for a 150 Evinrude DI?

Looks like it's been idling for a while before you turned the engine off. You can't really tell from that.

Do a plug chop.You probably know how to but just in case, here you go:-

Borrow an aux or get someone to follow you to tow you in as you'll have to kill the engine while at speed.
Warm it up, go for a nice run at a STEADY 3/4 throttle for a minute or so (in calm water if possible) and pull the killcord or turn the key off while running at 3/4 throttle. Get back to somewhere you can take the plugs out without using your main engine.

Remove your plugs. Take all of them out to make sure and make sure you know what cylinder they came from. They should be a nice tan/brown colour-and all the same colour.
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Old 06 January 2008, 06:03   #4
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Did idle a bit, comming into the harbour and being restricted to 10 knots. Makes sence what you say, but will probably change the plugs for new anyway.

Thanks Andy. So it seems that the gap is slightly smaller than recomended at .026" they all came in at the same gap.
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Old 06 January 2008, 06:49   #5
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Did idle a bit, comming into the harbour and being restricted to 10 knots. Makes sence what you say, but will probably change the plugs for new anyway.

Thanks Andy. So it seems that the gap is slightly smaller than recomended at .026" they all came in at the same gap.

I'd still do a plug chop-the idea is to find out if your engine is running right under load-and it'll give you an idea if you've got an injector playing up as there'll be a noticeable difference in the plugs.
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Old 06 January 2008, 08:04   #6
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be advised that the EVIN DI you must position/mark the plug (or how you call it.) don't now if its necessary for the E-tec. Otherwise its the beginning of the end
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Old 06 January 2008, 08:15   #7
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Correct Orientation is the word you are looking for.
gaZ
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Old 06 January 2008, 08:19   #8
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yes, thats what I was searching for Thanx
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Old 06 January 2008, 08:57   #9
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How do you ensure that? Do you have to shim the plugs or do you just tighten them until they are correct?
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Old 06 January 2008, 09:04   #10
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I believe the correct term is 'Indexing the plugs'.

Mind you, now they are out, it may be a bit difficult to mark them up.

I was told about this when I was looking at a 200HP FICT, or however you spell it.

I ended up with the Suzuki which is not fussy about the shielding effect of the electrode.



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