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 Picture of my spark plugs 
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Post Picture of my spark plugs
Well I have noticed a black film on my cavitation plate after a couple of outings recently. Enough to where its hard to wash off. I know a little bit about motors and I'm working on learning as much as I can. Any thoughts are appreciated. I'm thinkin I might be running a little too rich? Here is a picture of the plugs.

This is on a Prodrive 36 horse. In the pic of 2 plugs the right plug is on tiller side.




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Thu Oct 07, 2010 5:42 pm
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Post Re: Picture of my spark plugs
i own a motorcycle shop and those actually look perfectly normal. too rich would be like tar on the plugs, lean will make them white. brown is good.


Thu Oct 07, 2010 6:29 pm
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Post Re: Picture of my spark plugs
you got a bad lower unit seal


Thu Oct 07, 2010 6:41 pm
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Thu Oct 07, 2010 6:44 pm
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Post Re: Picture of my spark plugs
Nice Picture


Thu Oct 07, 2010 6:53 pm
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Post Re: Picture of my spark plugs

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Thu Oct 07, 2010 7:12 pm
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Post Re: Picture of my spark plugs

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Thu Oct 07, 2010 7:12 pm
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Post Re: Picture of my spark plugs
It's not ur seals shadow. I seen the motor. It's def exhaust soot.


Thu Oct 07, 2010 7:14 pm
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Post Re: Picture of my spark plugs
ahh i see now, i have a lt so the cav plate is at the end, therefore the only stuff that can get on it is mud. :lol: can u post a pic of the film?


Thu Oct 07, 2010 7:16 pm
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Post Re: Picture of my spark plugs
This is after about 4 wash's and scrubbing the crap out of it. It was almost completely black...could barely make out the letters. Thats after about 7 hours of driving.


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Thu Oct 07, 2010 7:19 pm
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Post Re: Picture of my spark plugs
:shock: :shock: hmmm........is the muffler old? i know sometimes carbon buildup inside a muffler will blow stuff out as the motor heats up and burns it


Thu Oct 07, 2010 7:26 pm
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Post Re: Picture of my spark plugs
This is a 2010 prodrive. Bought in december of last year. Thats why I was thinking it might have been rich.... I dunno.

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Thu Oct 07, 2010 7:28 pm
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Post Re: Picture of my spark plugs
hell id bring it back then


Thu Oct 07, 2010 7:29 pm
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Post Re: Picture of my spark plugs


Thu Oct 07, 2010 7:31 pm
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Post Re: Picture of my spark plugs
The motor runs well.... I mean I haven't noticed anything wrong... other than the black crap on my cav plate

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Thu Oct 07, 2010 7:35 pm
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Post Re: Picture of my spark plugs
well, usually yes. at least alot darker than the pics show. if a pplug is hot enough, it will burn the extra gas being delivered to the cylinder, thats why alot of people go up one 'level' of heat on their spark plugs if they have problems getting to warm up


Thu Oct 07, 2010 7:36 pm
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Post Re: Picture of my spark plugs
Soooo.... what to do... what to do.

Is that good idea?

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Thu Oct 07, 2010 7:38 pm
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Post Re: Picture of my spark plugs
you can try it, wont hurt anything. maybe call the dealer and see if they've had any issues before


Thu Oct 07, 2010 7:40 pm
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Thu Oct 07, 2010 7:42 pm
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Post Re: Picture of my spark plugs
Those plugs look perfect, how long did you run them in the engine before you took them out?

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Thu Oct 07, 2010 7:44 pm
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Post Re: Picture of my spark plugs

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Thu Oct 07, 2010 7:46 pm
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Post Re: Picture of my spark plugs
You have a a short transom rig and you get backwash in your exhaust when stopping to fast. Thats just the carbon/water dripping out of the exhaust port.

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Fri Oct 08, 2010 1:15 am
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Post Re: Picture of my spark plugs

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Fri Oct 08, 2010 6:04 am
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Post Re: Picture of my spark plugs
On these engines is there always one cylinder that runs leaner than the other? Judging by his pictures, it seems like the plug on the right is running a bit leaner than the other.

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Mon Oct 18, 2010 7:59 pm
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Post Re: Picture of my spark plugs
i agree totally with poker exhaust soot from the water rushing in will stain like that, man we got some smart SOB's in there


Mon Oct 18, 2010 8:05 pm
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