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Engine noise is quieter now! Pulley bearing replacement (air conditioner belt tensioner pulley)

If you go to a genuine parts store, they will tell you that the compressor tension pulley is an assembly replacement, but you can actually replace the bearing for a few hundred yen. I had been feeling that the fan belt was wearing out fast lately, but it seems that this was the cause. After replacing the bearing, the engine noise at idling became quieter, which surprised me. I was surprised at how quiet the engine sounded at idling after replacing the bearing. I guess even parts like this deteriorate after a long time of use. Let’s be careful. This article is about the replacement of the pulley bearing. ディーラーだとアッセンブリ交換 I went to a Mitsubishi genuine parts store and tried to order just the pulley, but they told me I had to order the entire assembly, including stays and bolts, and the price was over 5,000 yen! Instead of ordering, I went to another parts store and asked if they had just the pulley. I went to another parts store and asked if they had any pulleys, but they said they only had genuine parts for this part. Well, ・・・・ what should I do? ・・・・ Do you want to replace […]

To replace the fan belt on the 4M40, remove the alternator tensioner!

I didn’t realize it when I wrote this article, but I had been thinking that the fan belt was wearing out quickly. After I wrote this article, I replaced the pulley of the air conditioner belt, and suddenly the engine sound became quieter and the V-belt did not decrease. For a long time, I had been thinking that only the two V-belts were wearing out quickly, but it seems that the cause was that the bearing of the tension pulley of the air conditioner belt had died and was no longer turning. This article is about the replacement of the fan belt, but I will upload an article about the replacement of the air conditioner belt pulley bearing later, so please look forward to it. Translated with www.DeepL.com/Translator (free version) Replace all three anyway. The two V-belts that turn the alternator were worn out and thin, and even if I wanted to replace just these two belts, I would have to remove the compressor belt to get to the two V-belts, so I decided to replace all three belts anyway. I decided to replace all three belts anyway, since fan belts for L400 Space Gear are usually sold in sets […]

The cause of noisy engine is in an unexpected place! What is the cause of the noise that reduces even fuel efficiency?

If you have a noisy Delica Space Gear and you’re wondering why it doesn’t get quieter even after using fuel and oil additives, it might be worth a try. I replaced the fan belt and pulley bearings, which don’t seem to have much to do with the quietness of the engine, and it became very quiet. The diesel noise (squeaky noise) was loud. The “squeaky noise” at idling was noisy to begin with. When I replaced the fan belt, it was reduced and thinned out early in the Warri, and I felt like the ・・・・ fan belt was wearing out fast. What? When I touched the pulley when I changed the fan belt for the second time, I found ・・・・・・ It’s not working! So I hurriedly replaced the tension pulley bearings in the compressor belt and all three fan belts… Suddenly the engine is quiet! I’ve become so accustomed to noisy idling that I didn’t realize how quiet this engine was: ・・・・ I didn’t know that. Basically a quiet engine. When the 4M40 was developed, it was supposed to be a dramatically quieter engine with dramatically less black smoke. It’s hard to believe with the state of the 1st model […]

Batteries are super important in the late model L400 Delica Space Gear! Electricity is the solution to all problems

This engine has been transformed into an entirely different engine by being electronically controlled. So… It’s a diesel engine, but the battery is the life! If it’s a gasoline car, the quality of the battery will change the condition of the engine, but late model 4M40 diesel engines will also vary in engine performance depending on the quality of the battery! I guess it’s no surprise since the fuel injection and various control systems are controlled by electricity. In fact, in the past, when one of the terminals on the two batteries that are attached to the car had bad contact, I thought, “What the hell? What’s up with the acceleration? Many times I felt like, “I’m not feeling so good today! Diesel engines are all OK once you start them. There was a time when it was said that it was a good idea, but not from this car. Electricity is the most important thing to a diesel engine. Beware of cold-weather vehicles that come with two batteries, only one of the two batteries may be connected! The cold-weather version of the car has two 85D26Rs connected in parallel, but there were often times when the terminals were loose […]

L400 Space Gear Oil Management|Is expensive oil better? Or cheap oil? Which one do you want?

Changing the oil is a bit of a hassle, but if you do it right, you can ride forever. I’ve written about how I feel about it. Spend as little money as possible and keep it in the best condition possible. If you change the expensive oil often enough, of course you’ll always get the best condition. But… I’m not willing to spend precious money in hot water on a car that is just a tool to get around. More importantly, how nice it would be if I could keep it in tip-top condition without spending a dime! I wrote down the cost of maintaining the car in order of most expensive. Fuel cost -> tires -> oil In that order, I think. This page is about that my own oil management. The 4M40 engine is nervous about oil contamination. Compared to other diesel and gasoline engines, the 4M40 diesel engine seems to react more severely to oil degradation with mechanical noise. I mean, when the oil gets dirty, it gets noisy as soon as it gets dirty. I’ve tried a lot of high quality oils and high quality oil additives, but to be frank, I don’t think there is […]

Very bad tendency of the late L400 | Glow plug

I think that the preheating control system is meticulously controlled, but the more important glow plug is that the Late type 4M40 uses short-lived parts that are “very cheap” than the Early model 4M40. Unlike the early model, the late model has a cheap plug It seems that there were two types of 4M40 glow plugs. [Ceramic plug] that was installed from 1994 to 1997 when it was launched, and [Metal plug] that was installed until the end of sales from 1998 to 2001. Four ceramic plugs made by Denso cost about $200, and four metal plugs made by Bosch cost about $100. The metal plug assembled in this late model is not good. It’s half the price of a ceramic plug, so I think it’s kind to a wallet, but it’s a performance that betrays those who love the L400. In the early model 4M40, there was a lot of troubles such as [starting failure of unknown cause], and every time the user brought the car to the dealer, the dealer had to replace all glow plugs. Therefore, the manufacturer made a poor and cheap glow plug to reduce the loss and installed it in the late model 4M40. […]

Bad part of late type L400 | Oil deterioration and element

Even though it’s a station wagon, the engine is very delicate even though it is an “offloader!” Be careful of engine conditions! Oil management of 4M40 must be done firmly! I think that the engine is basically weak against oil stains. The engine noise becomes loud after 2,500km to 3,000km after the oil change. I have tried various oils and additives until now, but after all, it did not last well up to 5,000km. The first thing to change the oil may be the key. I bought a second-hand car that ran 40,000 km, but as far as I can see from the maintenance note of the previous owner…Oil was changed only a few times (T_T) At first, when I got on the L400 and accelerated completely, I heard a strange noise from around the turbo when it got high rpm. After repeating the oil change a few times at an early timing, this noise disappeared, but if the oil management is sloppy, the turbo will be stressed more than I imagined. In the unlikely event that the turbo is defeated, a huge repair fee is waiting. The oil filter of 4M40 is huge! Too big It’s good to change […]