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#1
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I've touched the spark plug boot while the motor was running to make sure I had spark on all cyclinders. You can definetly get a good shock, its not like sticking a fork in the toasted but you can feel it for sure.
 Like you said before Blue, if they are all new plugs you should be able to tell if ones not firing just by pulling them and taking a look. 
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#2
06-16-2008, 12:40 PM
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I'll be sure to pad my keester real good before said test.
Here is the latest question dancing in my head - what if I determine there is one cylinder not firing? What to do at that point?
__________________
 1994 Wellcraft V21
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#3
06-16-2008, 03:02 PM
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Quote:
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#4
06-16-2008, 03:20 PM
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Blue, i got all kinds of ideas rattlin around in my head about your problem.
Heres one that just came to mind. If the problem started right after you changed the plugs, its possible one plug is defective? Also, go pick up a cheap spark tester from the auto parts place. You connect it between the wire and the plug and will tell you if you have spark. They are cheap, I bought one at Harbor Freight for like $4.00.
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#5
06-16-2008, 04:59 PM
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WILLY had the right idea as to what I was getting at, except I would pull one plug wire off with it NOT running and then run it. This way you can pull the wires without turning into SPARKY. Only pull one wire at a time, but if you pull a wire off and you notice no change in the engines performance then you found the weak cylinder.
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD  AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664 
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#6
06-16-2008, 05:15 PM
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Ok, Mulv I know its not the spark plug itself because I replaced them before the Hatteras trip (5/22) and all was well until recently when it started acting up. Now I've changed all 6 plugs again and no difference.
Thanks for the tips. I'm resting a bit after work. Gonna let it cool off just a little before I go out there.
__________________
1994 Wellcraft V21
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#7
06-16-2008, 06:08 PM
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Ok, it is definitely 1 cylinder not firing. So now I suppose I have to determine whether it is fuel or spark right? What is the best way?
Clean as a whistle - the only one that obviously isn't doing its thing:  Facing the rear of the motor it is the top right cylinder: 
__________________
1994 Wellcraft V21
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