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0:00
I would say for the four-stroke, the most unreliable engine is definitely the carbated four-strokes
0:05
Like just anyone, Mercury, Yamaha. Yeah, I mean, there for a long time, or not a long time, but you had the Mercury and Yamaha had a deal with each other
0:12
And, like, you had, I mean, they called them the Mercaha, Yammerk, whatever. Those had all kinds of problems
0:20
Like, a car-rated four-stroke is just a bad idea. Because if you put the engines, when you put them away, like, there
0:29
there's all kinds of sinking that you have to do between the carburetors
0:33
In order to get all four of the cylinders or however, you know, whatever it is
0:37
to, on the most ones that I'm talking about are the four cylinders
0:44
You have four individual carburetors, and they all had to be synced together
0:47
Like, they had to be pulling the same amount of vacuum, and you had to hook them up to a vacuum mate and sync them together
0:53
So if someone put the boat away for a season, when they pulled it back out, you had all these problems with the carburetors
0:58
And it was a pain because you had to pull all. four of them off. They had these electronic enrichmenters on them
1:03
and those things are stupid expensive. So if you had one of those
1:07
go bad, you're out 500 bucks. And then you had to, yeah
1:11
they're stupid expensive. And so they had TPS sensors on them that would go bad
1:18
on the Merkert, like the Merkohans, those were inverted. So like the way the TPS read
1:27
was backwards the way the Merkir computer Reddit and the Yamaha computer Reddit
1:31
Yeah, I remember that. They would just have wear, and then they would just get, as soon as they came out of
1:37
sink, the engine just would, they would have trouble idling, you'd lose wide open throttle
1:42
they'd just be all kinds of problems because you'd have one individual cylinder that was either running lean, wretch, whatever the case may be, and it would just take so much
1:51
work to get the thing to run right, and then... How often would you have to sink and link them
1:56
Some people got lucky, but most people had to do it. you know, every other year
2:00
I mean, it just depends on, goes back to the neglect and abuse
2:05
And, you know, poor fuel quality. As far as four strokes go, were there ever any that had, like, popping issues
2:14
like that were just blowing powerheads left and right Maybe the early L6 Yeah I mean the early L6 the exhaust was a little bit lower So there were people that would like have it jump time
2:35
Well, that's a whole other issue, is that the engine would jump time. So it would, if you lost oil pressure at all, it's a tensioner that had oil that kept
2:46
the chain tension for the timing of the engine. And if that, you lost oil pressure or anything like that or had, you know, a problem
2:53
those engines like those first generations, they were known for jumping time
2:57
coming off waves, unloading the engine and loading it back up like it would
3:01
they could jump time. So that was a whole problem all of its own
3:05
But blowing powerheads, I mean, a lot of those were abusive blows or it would ingest water
3:14
Yeah, I assume they have to be. I mean, definitely abuse-related because, you know, I can't speak to the early L-6s
3:22
but if there's a motor that can take abuse, it's that L-6
3:27
I say it too much, but they take abuse like nothing I've ever seen, dude
3:33
I think you're all about reliability right now, like talking about reliability
3:37
I think we should just keep covering the unreliable stuff first. You're right
3:41
And then, so, like, okay, early another thing, or like Yamaha's. because, I mean, we talk about a lot about Yamaha Hunter liability, just like the L6
3:51
but like the 02 to 04 V6s and 3-3 liters, those engines, the exhaust manifold would rot out
4:02
that was a big problem for a long time. Yeah, I don't, I didn't like those early 3-3s either with the ITBs
4:11
They were just, they were just dogs, and they were just heavy
4:15
those were another thing. Those you'd have to have to sink and link the individual throttle valves or the individual throttle bodies
4:24
They, yep, you'd have to get out that vacuumate to sink those. So those could be a pain
4:28
But I don't think you had as many problems with those. The biggest issue was those were the exhaust manifolds running out
4:36
Outside of that they didn have much they weren that powerful I mean everybody called them the old girls or the old dogs because they you know this big heavy engine that you didn really get the same amount of power
4:50
Like, you know, especially when the L6 hit the market, you're talking about this supercharged engine that's got all this power
4:57
So the F350, the Yamaha F350? That's right. That one had a lot of flywheel problems, right
5:06
Mm-hmm. I mean, what was the problem with those? Why did they go through flywheels like that
5:11
It was only the early ones too, right? No, all of them. All of them
5:15
All of the. Oh, you know what? Now that you mention it, they have like a flywheel timing counter on the software, don't they
5:23
Yep. I think it's code 80, I think. Yeah, no. No one would probably say it, but in my opinion, the, so the flywheel has a bad
5:36
balancer on it. It's like this big rubber thing. And the problem is that, you know, I would say that
5:42
the engine is harmonically unbalanced because if you run an engine between, I think it's like 38 to
5:48
42, 100 r pms for over 80 hours, it harmonically is unbalanced and that harmonic balancer on top of
5:57
the flywheel will split. And it will actually shred that thing and like throw the, it'll, it'll
6:05
it'll shred that bouncer off and then throw the bouncer off. It'll rip it off and just blast it out
6:10
like tear it up. Jeez. So, I mean, it's a, it's a
6:13
what kind of damage with that cause? Depends on how bad, how fast
6:18
I mean, if you're running 5,800 RPM, and that thing comes flying off of there
6:24
it's a bouncer, so it's heavy. Right. It's just going to blow right through the cowling
6:28
you're saying, send to the stratosphere type of deal, or? I don't know if I've, I've
6:35
I've never heard any of them coming out of the celling, but..
6:38
What was the service interval on those? 80 hours? 80 hours? You had to replace them every 80 hours
6:45
Mm-hmm. Holy crap. Maybe it was Code 72. I'm not sure. I can't remember
6:48
I think it was code 80, but it could be code 72. I mean, still, like, flywheel can't be cheap either
6:56
Mm-mm. So you haven't replaced a flywheel. Oh did they warrantee every single one of them for the rest of that engine life In the early years you had to replace the engine computer and the flywheel So the early years didn have the counter in there
7:11
So you had to change the ECU that then allowed it to have that counter that would notify the operator of when they were ran that long in that RPM range, which is cruising speed
7:24
I mean, everybody cruises around 4,000 RPM. Okay. So it's only, so it's every 80 hours in a certain RPM range. range
7:30
All right. All right. That makes a little more sense then because I was like, man, if you're having to replace that thing every 80 hours, that's before your 100 hours service
7:37
No. No. I mean, if you're in the engine wide open throttle all the time, never have a problem
7:43
That's why I say it sounds like a, you know, a balancing issue, like whatever it is in that RPM range that would make a vibration or whatever that would throw that or maybe it was the flywheel as a problem
7:55
but I kind of feel like if it was really the flywheel problem
7:59
it would happen at all. Well, not only that, but you would be able to manufacture a different flywheel that didn't do that
8:07
Yeah. Yeah, you're right. Who'd have thought of that? So, you know, I don't know
8:13
But that engine, would you say that that's an unreliable engine? Because not really
8:20
I mean, I don't know, man. I only know one unreliable Yamaha
8:24
and it's the HPDI 250 to 300. Or was it 250 to 300
8:31
Just that HPDI. It's the only Yamaha I've ever heard bad things about
8:36
Like I said, I don't personally like working on Yamaha's too much
8:40
I'll work on them. And I like me in Yamaha. You know, I'm going to. But if I'm begging Mercury over Yamaha, it's Mercury
8:46
I've never heard anything bad about, by Yamaha's reliability-wise. Every person you talk to
8:53
what's the most reliable outboard there is? Yamaha. 100%. Now a lot of people are starting to say Suzuki
9:00
I think the price tag is affecting that decision. Yeah. A little bit
9:05
I think they're factoring in reliability for the price. Right. They're like, bro, go with the Suzuki
9:12
You know what I mean? Like 100%. Yeah. But as far as classically. You mean I could save $15,000
9:19
Yeah. Yeah, I know. So if you like this clip, you can watch the full podcast
9:23
over here or you can watch another clip over here
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