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2 Stroke Outboards AREN’T As Reliable As You Think…
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Aug 14, 2024
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View Video Transcript
0:00
Christopher Williams, what's your opinion on reliability, two-stroke versus four-stroke
0:05
with the exception being the crappy E-tech G-2s? I always argue that a two-stroke is more reliable, much less moving parts, no valves or
0:16
timing components that can fail, plain simplicity, my 1999 Mercury 40, which I never winterized
0:23
ran ethanol fuel due to availability, premixed with a surplus of Mag 1 brand oil I had
0:28
the guy sold it to in 2015 is still running it hard to this day with that same surplus of 20-year-old two-stroke oil
0:35
I just don't see a four-stroke taking the same abuse while still running strong
0:39
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0:43
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0:48
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0:53
Christopher Williams is amazing. He sent me all kinds of stuff. He gave me, like, cutting oil and all kinds of, like
1:00
Evanry grease and stuff. So, Chris, thank you again for all the stuff
1:05
Now, as far as reliability on the two-strike versus four-stroke, it kind of, you know, in the lower horsepower
1:12
I'm going to say you could even kind of break it down like that. Yeah, there are certain, it's good, I mean
1:17
certain years, certain engines, HPDIs, certain horsepower, certain years, certain Optimaxes, you know, 97 to 01, you're talking
1:27
walking the opt-pops. It might even have been more like 97 to 99
1:32
but real early first model fix, very unreliable engines. Forces, very unreliable engines
1:42
But, you know, 40 horsepower, Yamaha two-stroke, a 40-horsepower mercury, 99, you know
1:50
some of these smaller horsepower, once you get into the 200s, 250s
1:55
it's kind of a different world. So it's a different thing. So more horsepower comes more problems
2:02
Like you're more torque, more power, more, you know, more abuse basically is what it's going to be
2:09
So as far as reliability goes, it all depends on the engine
2:14
because certain models are going to be more reliable than other models. But four strokes have come so far that they kind of are more reliable when it comes to a two versus a four So if you like comparing a 250 horsepower Yamaha 3 HPDI compared to a 250 horsepower Yamaha F horsepower
2:43
like that 4.2 is going to make 2,000 more hours than that HPDI is
2:52
and it's just that platform is so well designed. Not talking about cost and maintenance and all the other stuff
3:00
And yeah, you know, on a small, you know, two strokes, more simplicity
3:04
a lot easier, a lot less than go wrong. But at the same time, you know
3:09
if we're talking about a 40 horse and a 40 horse, an F40 Yamaha in, you know, a 40 horsepower two stroke 99 running on a pre-mix
3:20
like they're both going to be super reliable. They're going to last probably the same amount of time
3:28
Will the four-stroke end up costing you more money in the long run? Yes, it will
3:34
As far as maintenance goes. Now, as far as fuel consumption, though
3:39
over the long run of the two-stroke and the four-stroke, the two-stroke, based on how much time you put on it
3:47
you know, how much you're costing in fuel burn compared to the four stroke
3:51
Does it even out? Possibly. Reliability-wise, smaller engines? I don't think there's
3:59
I don't think that I would say that one is more reliable than the other because you've got to throw in the exceptions of the different models
4:07
that had specific problems compared to other models like, you know, you're 40 Mercury
4:13
Like you're not going to, you're going to have no problems with that thing
4:17
You know, it's a small engine doing a small engine. doing a small job that's not, you know, taking a lot of abuse
4:22
It's getting plenty of oil and drinking fuel. So, yeah, I would say hard to compare
4:30
You really can't compare a two stroke versus a four stroke because you have to compare a model to a model
4:36
There is no way of like, it's a platform that has a ton of different variables
4:43
You know, it's like getting in the discussion of an Android phone versus an iPhone
4:48
They two different platforms with a bunch of different models Same thing A four stroke is a platform A two stroke is a platform There bad two strokes There bad four strokes If we compare the unreliable and bad models of each
5:03
then, you know, that could be something better than just the platform versus the platform
5:09
In some instances, the simplicity of the four stroke is, or the two stroke is going to be more reliable than the four stroke
5:17
But at the same time, in certain instances, the reliability and the fuel consumption and the runability of the four-stroke is going to be better
5:26
than the two-stroke. Long-winded answer there. Maverick. Mazinko says I have a 1999-Evindrood 50-horsepower
5:34
four-stroke made by Suzuki. Yep. And the overheat alarm goes off only when I'm about to put the
5:40
boat on the trailer. Sometimes after a long run and sometimes not. It seems to be pumping water
5:46
most, if not all the time, new impeller, new water tube grommet and water pump gasket
5:52
I put a hose to the water tube and it has great pressure all the way to the thermostat
5:56
So I don't think there's a blockage anywhere. It is very weird that it's only at low idle and neutral about to put it on the trailer
6:04
Any advice would be appreciated. Get a heat gun. That's what I would do
6:09
I'll get it, you know, go to Walgreens Home Depot, wherever. Get yourself a cheap heat gun that you can, you know
6:16
infrared heat gun and when you go to put it on the trailer, if that alarm goes off and it says
6:21
it's overheating, pull the cowling and shoot it. See what temperature the engine is actually running at
6:27
That would be my first thing that I would do. And then also, since it's sporadic, yeah, since it's
6:35
sporadic, you might not even be overheating. You could have a therm, you know, a temp sensor that's
6:40
going bad or is a bad connection and whatever reason it's messing up. So I would
6:46
I would shoot it and make sure it's really overheating. That's kind of the first thing you want to do when you ever are dealing with overheats is, you know
6:55
make sure that you actually do have an overheat problem. And then also, where is it
7:00
You know, because like on a 50, I'm not sure if that's a, I think that's a, I think that is a three cylinder
7:07
but I'm not 100%. But, you know, with the temp, you can shoot top, middle, bottom, and you can kind of see, you know
7:13
oh my head hot the bottom of the block is hot the top is hot near the heat sensor you know something like that And that you know if you can see an actual heat spot somewhere on the engine now you got something to go off of
7:27
Because if you do have a blockage, the telltale is not going to give you any indication
7:33
of whether or not you really have a blockage internally on the engine. Like if you've got a blockage of sand, corrosion, shells, you know, mud, whatever
7:43
if you've got a blockage somewhere in the head in one of the passages
7:48
the taill tail-tail runs off of the water jacket and then just goes straight to the side
7:52
That water jacket's always full of water. So you might never know that you have a blockage inside the head
7:58
unless you shoot it with a heat gun. And you'll be able to see one spot that might be a lot hotter than any of the other spots
8:07
And that's because one little passage somewhere might have whatever it may be
8:12
mud, whatever it could be. So I would be, you're going to have to have a heat gun because, and you don't have that
8:19
an expensive one, just go on Amazon and look up infrared heat gun, you know, like a temperature
8:24
checker, you know, even a thermometer. I mean, even, you know, they got the thermometers now, you shoot people in the forehead
8:32
and it tells you the temperature, like, that's all you need because you're looking for, you know
8:36
you're only in 150, probably degree range. If it's overheating now, you might be seeing 180, something like that
8:42
So, you know, most of the thermometer is going to give you that temperature. That's going to be what I would be doing
8:48
And then if you do have that issue, then you can look at, you know, Rid lime or something like that or, you know, pulling the head
8:54
and you probably got packed sand or something in there, and you've got a hot spot on the engine
8:59
So heat gun, check it as soon as the thing goes off
9:04
because usually also if you've got a hot spot, it wouldn't necessarily be when you're putting it on the trailer
9:12
You know what I'm saying? Like, you know, if you're running the engine normal, you're out running around doing this, doing that
9:18
And as soon as you come off plane and now you're idling around, when you're idling around, it allows that hot spot to get hot
9:26
Because at speed, your thermostat's open. You've got a lot of water flow going
9:30
So the surrounding water flow around the hot spot is going to be able to keep it cool
9:35
But then whenever you're at idle, you're moving a lot less water, which is going to allow a hot spot to get hotter
9:41
So that's what I would do. Now, if you like this video, you can watch the full episode over here
9:46
or you can watch another clip over here
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