6-speed dakota here in today's project we're going to be replacing the spark plugs cap and rotor or otherwise known as doing a tune up on my Bayliner 195 just right over there just a lot of the quads you can just see the tower there some stuff you're getting here in this case because the 4.3 v6 in six AC Delco mr 43 LTS spark plugs a mercury Quicksilver cap and rotor kit some silicone based lubricant in this case it's a brake lubricant it works just fine for using it as a dielectric grease I've been using it for years no problems and some anti-seize so tools you're going to need well you can use a flat blade screwdriver and you're going to need a spark plug socket with a ratchet and a small extension now some people characterize is doing a tune-up as like you know they don't understand what they mean by doing a tune-up all modern vehicles nowadays usually doing a tune-up - just replacing the spark plugs so let me replace the air filter and others may replace a PCV valve now most vehicles actually don't have a PCV valve anymore so don't have to worry about that so much especially this motor doesn't have them it just as baffling inside the inside the what's it called the valve covers that's what I'm looking for okay and in this case because the distributor type ignition I recommend replacing the cap and rotor and I'll explain why when we get to it so quick tip on spark plugs come over here see my little new your spark plug if you look at that this top piece here is called the ground electrode and this piece here is the main electrode now notice how the main electrode is nice and square focus nice to square all the way at all Alvah across the top this ground electrode here is perfectly square as well now way you can tell that these are worn is this guy we start to taper inwards and what will happen with this guy here is this end of the end of the the spark plug here will actually start to round once that starts to round you know the spark plug needs to be replaced also another thing is if you've got a platinum tip plug which is a very fine point on it once you see the point worn down to where it kind of looks like one of these and then then you go to replace them okay so here it is 4.3 liter v6 commonly found in s tens Chevy Blazers and even some of the full-size pickups now just because it is not a motive engine you know it has a carburetor on it it doesn't mean you can use automotive parts you must use the correct marine spark plugs because this is a marine carb a marine alternator power steering pump and also starter these components are definitely not designed for an easy life now a marine engine will go where am i I don't see myself there we go a marine engine will go through about three or four times the abuse of a normal car engine therefore we have these specialized components to be able to withstand the extra that the added stress to them so marine carb is internally vented so it doesn't stink up the bilge with gas fumes so when you go to crank the engine it'll blow the cover off that'll be really bad same thing with the alternator it's sealed internally so that you don't get a spark and also with the starter the tank same with a distributor cap down there as well these are all marine grade parts and are designed to stay that way so because this isn't a Hemi hemispherical style engine you're going to have plugs along the top of the valve cover but most engines including these vortex still or down here by the side of the manifold so all you have to do I don't know if you can see this very well but we're going to twist the boot and give it to loosen it off a little bit give the pull okay just pops right out so then we take our ratchet now we're going to put it in there oh we can't see it to once again this motor is really blind in here loosen you probably can't see what I'm doing but I'm actually loosening the spark plug off and there it is now notice how the tip is worn down a little bit like that it's about time for it to be changed so that's what we're going to do okay so here's the new spark plug nice and shiny new not used and what we're going to do hold the camera apologize for the waviness it's kind of sitting on my knee right now it's also kind of starting to rain so I can't hurry up put a little dab a nice ease on there oh come off it I get just everything done now it just starts to rain install the plug there we go now if you're if you want to absolutely make sure that things gap correctly be my guest you know I've done so many spark plugs that gapping them it's just a waste of time getting them in here when you can't see is a bit of a challenge I can just okay there we go it's all threaded in the hole now what you want to do when you get the plug bottom note you take your ratchet set up to tighten and then you just snug it down only 1/16 of a turn that's all you need because the spark plug doesn't have a crush gasket on it's a taper style seal so that's why you don't want to tighten it down too much you don't need to crush the gasket because there is none so now we're going to do second there you go go take our silicone based we're just going to put a little bit of that down that spark plug so here's what you want to do oops third hand is slow in the theory of evolution just take a little dab of that and then you put it inside the insulator jacket just like that and plug that plug back in there up Pete that two more times on the one side there on the other okay so to replace the distributor cap all you have is one screw to screw and three and four in the back this guy lifts off now in this case I've bent up this Hall effects which pretty bad because the new one comes with this new Hall effect switch so that sucker is stuck on there like no flipping tomorrow so I've been wrenching on with my biggest pry bar but as you can see I'll get it out in just a second all you have to do is basically just pull this thing off well if you can get it off that way okay like I finally got that stupid rotor off notice I left all the plug pliers tap that's important I'll refer to that in a second now you can tell there might have been some moisture getting in there it's a stupid rotor is stuck on there so badly then you use a three-foot pry bar to get it off dude we'll take some never cease spread it all over the river get the distributor driveshaft okay we got the slot I'll cut that thing I'll cover with never sees all you have to do is line up where this Rooter points with the end of that slot oh bugger mmm this might take me a second but all it should do is just press right down on there holy crap that was really really on there okay I got the rotor in place make sure it's fully fully seated okay and then the Hall effect trigger there if we look to the side here you can kind of look here that Hall effect triggers sitting nice that the trigger sitting nicely within the igniter itself so how up really here I'm gonna be careful on a boat because there's lots of sharp objects like these cotter pins to you know tow by the scrapes on my arm to cut yourself on and now they're there so just give it a couple firm whacks test fit the distributor make sure that guy sits on there nicely okay so now what we're going to do want to change the cap so now what you want to do you want to bulk it down but you just want to sit the new builder in respective location oh there we go this thing's just fighting it in there we go now you know that the center comes from the ignition coil which is right there so now using that little glow-in-the-dark look at the elbow as a reference point there's also numbers on this thing start pulling first we're actually going to dab each and every one of these guys just a dab of that silicone grease oops this will allow the boots to slide better I'm sorry there's one cap back on there sorry this isn't very clear sit that back on there okay let's try to explain before it became a complete utter failure is you leave the cap close by and then set the new cap on there and bolt it down and then what you can do is just swap between caps now how do you know that they need to be changed but if you look how worn out that center button is and on all that nice green crap it's growing on there that will cause hardness hard starting this under load and a rough running engine alright now that we're all said and done as you can see how bad this plug looks so long nice and foul up from well the fog and when I put on it which is what you're supposed to do when you store the engine for the winter time so that's why we change the spark plugs frequently especially on marine engines very imperative that you change the plugs on a regular basis so maybe change your stay at your plugs maybe every year or two depending on how they look pull them out and inspect that and make sure that they're in good shape okay until next time thank you for watching and now you laughter it's all set nunya knows a better starting engine and a smoother running engine that performs better and gets you better gas mileage so change your plugs frequently and yep stay tuned if you got any requests for anything you want to see just leave a comment and I can only really do what comes into my my home-based shop here but I'll try to get around to it alright thank you for watch take it easy everybody