Impressions of riding the first half model and the second half model | The good thing about the second half is here!

The biggest difference between the early model and the latter model is the running performance

The running is totally different!

I was on the “Pajero” of the previous model 4M40 engine, so I can clearly see the difference.First・・・

[Starting]

Is different. The early model 4M40 engine has poor initial acceleration. At that time, I tried to change the ATF or try using an additive of ATF, but I could not improve it. And the other

[Later model 4M40 engine has no speed range where acceleration is not good]

 

With the 4M40 engine of the previous model, the speed was too fast to kick down to low gear even if the accelerator was fully opened at about 40km/h, and it did not kick down.

Even if you step on the accelerator about 80 to 90% at 80 km/h, you try to accelerate at OD.

Since the acceleration is not enough, if the accelerator is set to 100%, it will kick down to 3rd speed, but this time the engine speed is too high and the feeling of acceleration does not change so much.

However, in the latter 4M40 engine, even in the speed range where the earlier 4M40 engine was not good, it accelerates in the rotation range where the torque is the highest.

This difference is great. When I was driving the Pajero of the early 4M40 engine, I was always dissatisfied with the symptoms of such a mission.

Even if the engine is still in the early model, if the mission was like a late model, I think we could have achieved satisfactory driving performance.

Well, I think I couldn’t escape from the engine stall and the black smoke no matter how wonderful the mission was, because I made a mistake in the shaft and packing of the injection pump anyway.

Late type with no black smoke!

The black smoke was terrible in the early model 4M40! When the accelerator was fully opened, black smoke made it impossible to see the following vehicle.

Compared to that, the late 4M40 engine does not emit smoke.

Since no black exhaust gas came out from the muffler, I tried various things. However, no matter how hard I tried, the smoke that came out when I ran on the Pajero of the previous model 4M40 did not come out of this L400 model 2 4M40 engine.

By the way, it is less than 1KZ. If you look carefully when you are behind a 1KZ loaded hiace, surf, prado, etc., you can see that no smoke can be seen from the later 4M40 compared to when starting and accelerating.

An acquaintance who knew the severity of 4M black smoke was surprised at a later date, “This car doesn’t emit black smoke at all.”

Clever electric control mission

As I told you at the beginning, the transmission is very “clever”!

There is no shift shock when the engine is braked with the shift lever. In the previous term, there is a slight shock when you drop to 2nd speed and apply the engine brake, but the Type 2 4M40 will connect softly. The same is true for the 2nd → 1st speed.

Even on a downhill, the gear will drop to the 3rd speed without permission. Is this car reading the slope with a sensor? Even when you stop at an intersection, every time the speed drops, it will drop gently, from 3rd speed to 2nd speed to 1st speed.

Since it has fallen to 1st speed just before stopping, even if you accelerate again just before stopping, there is no abnormal shock.

The INVECS-II is deployed in the Type 2 4M40 electronically controlled mission. I don’t know the details ^^; “It learns the best gear change timing according to the driver’s accelerator work…”.

Although it is an old car, it may have the same performance as the mission of the current car. You don’t need a high performance that is fragile, but it is ◎ because it does not break.

2 type 4M40 ATF is [no need to replace], but should be replaced!

The ATF of 4M40 in the previous term is surely…Is it exchanged every 80,000 km? The late H11 year model I’m riding is [No exchange]. But just because it says “no exchange” does it mean that I don’t need to exchange it? Speaking of which, it seems different.

When I met the president of the rebuild mission company at work,

■Doesn’t it need to replace the ATF because it says no replacement?
■ Is it OK if the ATF of the overrun mission is divided and replaced several times?

I asked about this area. Then such an answer…

“If you want to ride the ATF for a long time, you need to replace it.”
“It is best not to replace the ATF of an overrun mission even with a small amount.”

he said to me. Then why is it written as “no exchange”? it is···Is the dealer’s oil management bad when a complaint repair is requested for a mission breakdown? Is the user’s oil management bad? Because the judgment is difficult…

Please don’t touch the ATF

It seems to mean that ^^;

Next, the reason why it is NG to replace the ATF of the overrun mission by dividing it into multiple steps little by little is not only that the stains in the mission are accumulated in the built-in filter, but also the mission inner walls cling to various places. It seems that When a new ATF with strong cleaning power enters there, the stain is peeled off and it goes to the filter further, so it seems that the filter will eventually clog at an early timing.

In other words, it is the same as exchanging ATF all at once…

If you overrun, you should leave your luck to heaven and continue riding. Have you no longer had to replace it because it has become mechatronically superior? Not so, so if you want to continue riding for a long time, it is recommended to replace every 40,000 km.

By the way, the company seems to do mission cleaning work for those who want to ride a car currently in use for a long time. It is recommended for those who missed the time to replace the ATF. It costs around $500-$600.

I should ask…

If you purchase a 4M40 early diesel turbo, look at the fuel in the fuel tank!

The most scary thing about the early model DT is the malfunction of the injection pump

If there is no replacement history of the injection pump…

■The engine suddenly stops when waiting for a signal, etc.
■ It is difficult to restart. But after about 10 minutes, the engine will start normally for some reason
■It is difficult to start the engine in the morning (white smoke is emitted from the muffler)

I have these symptoms. At that time, I did not understand well, but apparently the shape of the shaft and oil seal connecting the injection pump and the timing chain was bad → engine oil mixed with fuel → fuel mixed with oil went to the fuel tank → injected again Supply to pump →Further, fuel mixed with oil returns to fuel tank…

I heard from the president of a repair shop that the concentration of engine oil in the tank became higher and higher and the above symptoms appeared repeatedly.

After all, the oil concentration is too high and the fuel filter is clogged, making it difficult for fuel to reach the injection pump?

This means that the oil seal is bad rather than the injection pump failure that is often said.By the way, he says

“Originally, the oil seal had a tapered conical shape, but a cylindrical one had been used, so it could only shield at the corners of the oil seal, so it was a little worn. Then the oil enters the injection pump.”

Further

“If you remove the fuel from the fuel tank, you’ll be surprised at the black muddy fuel.”

He was saying.

See maintenance records when purchasing early diesel

In short, if the former owner has replaced the injection pump, you can purchase with confidence.

If you don’t have a maintenance record, open the hood and look at the injection pump.

If only the injection pump is obviously newer than the neighborhood, it will be bought (^ ^)

There is no record of changing the injection pump, there is no state, and if the mileage is increasing…I am afraid ^ ^;

As a solution, it is a passive method, but once it is full, run until the tank is empty and fill it again…If you ride in this way, the oil concentration in the fuel may not rise too much unknown····

No, you can’t make that compromise. After all, the former model is a replacement of the injection pump!

Be careful with products made from 1997 to 1998

The late type 4M40 did not suddenly switch from the early type to the late type, but it seems that it has been gradually changed from 1997 to 1998.

That’s because I’ve seen a car that is loaded with a Type 2 4M40 even though it looks like a car before a minor change. Well, that’s fine, but that kind of car

Many cars are in bad condition

I don’t know how it’s going wrong, but I know a few people who let go of L400. It doesn’t seem to be fixed even if I send it to a dealer.

Such cars are generally from 1997 to 1998. And, strangely, there are no such problems after the 1999 model. This is probably an ECU?

Maybe the engine setting?

I am thinking that way.

If the car is in good condition now, it’s OK. I’m sorry if there is a person riding the L400 of 1997-1998 type. I hope there are no problems. I think it’s a model with improved bugs.

If you are thinking of purchasing from now on, please purchase at a store with good security

It is the best car if there is nothing.