spark plugs for my outboard

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symondo

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I've spent the day doing oil, cooling, fuel and cleaning up my outboard for some playtime.

However the plugs haven't been done in 2 years, was tricky to start, id like to change them

I've found out my Suzuki 4stroke 25, should need 'dcpr6e' plugs. Currently by ngk.

Now I've located these to buy some just have that number as per the PDF I have from Suzuki, some are listed with the number and 'marine'

Obviously they are a vastly higher price listed as marine like everything.

I might sound a bit daft, but surely they wouldn't be exposed to elements, so what's up with the normal plug?
 
I would just buy the normal plug, I found the correct plug for my 3.5DT after looking at the NKG motor cycle spark plugs in Halfords.
 
symondo said:
I've spent the day doing oil, cooling, fuel and cleaning up my outboard for some playtime.

However the plugs haven't been done in 2 years, was tricky to start, id like to change them

I've found out my Suzuki 4stroke 25, should need 'dcpr6e' plugs. Currently by ngk.

Now I've located these to buy some just have that number as per the PDF I have from Suzuki, some are listed with the number and 'marine'

Obviously they are a vastly higher price listed as marine like everything.

I might sound a bit daft, but surely they wouldn't be exposed to elements, so what's up with the normal plug?
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I think the marine ones are probably stainless steel........ Unless your old ones are badly rusty dont bother with the marine ones. I rarely hear of them.


Outboard plugs are unlikely to need replacing after as little as 2 years......... I have the originals in my 1984 Evinrude!


DCPR6E is an NGK plug

D = 12 mm thread size, C= 5/8" hexagon, P= projected insulator, R = Resistor type, 6 = a medium heat range, E = 19mm (3/4"} reach
 
My main reason for looking to swap them was its proving a bit tricky to start.

After cleaning the other parts out I'm confident it has air and fuel so wondered if changing the plugs may help get it running nicer? Once its started its fine bit its just the initial start that made me debate changing them.
 
I used non-marine in my old Suzy... I'll be honest I didn't even know there was a marine version.. double plus on the plug change though - cheap and easy to rule out as a problem, and often has surprisingly good results...
 
symondo said:
My main reason for looking to swap them was its proving a bit tricky to start.

After cleaning the other parts out I'm confident it has air and fuel so wondered if changing the plugs may help get it running nicer? Once its started its fine bit its just the initial start that made me debate changing them.
Click to expand...
They are available under £5 each, so I'd give it a go.
I regard NGK as among the best plugs, so I'd avoid looking at anything cheaper that claims to be equivalent.
 
Is that engine electric start? On the matter of the plugs, the gap for mine is 28-31.thou I opened mine up to the max 31 had a lot quicker start. How often do you use it, if more than at weekly intervals, turn the fuel off and let it run dry of fuel, otherwise the carb can give problems and would need taking apart and cleaning, not a hard job to do, when ever I work on my engine parts I take photo's as I strip.
 
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