Hi guys, few months ago I bought a LC BJ60 - 1985 - 3B - manual w/ h55f. The truck seems to be in good shape, only little rust, the engine runs smooth, no toc toc, strange noises or anything like that, no smoke at all, well a bunch of smoke on starting when it gets really cold (-30 celsius or so) but still after 2-3 minutes everything becomes normal.
But since I have it (mid-november 2008) I'm getting a really high fuel consumption.
- When the hubs are locked, driving in 4x4 high range, city driving, I can go up to 22L/100km.
- When the hubs are free, no 4x4, highway driving, I still get over 17L/100km...
In more or less 2 months, the lower fuel consumption I had was around 16.5L/100km.
Moreover:
- I drive like an old grandfather, slow and steady, 90km/h on the highway, I never make it rev too much (2500rpm at max).
- Everytime I put fuel, as i'm putting ULSD, I put some Cetane/Antifreeze additive.
- I run 5w40 synthetic oil. (3 000km since last oil change). the engine doesn't burn oil.
- the coolant is new (green one), the temperature of the engine is steady at 190 fahrenheit when the engine warms up.
- The air filter can't be cleaner than what it is. (I have a K&N air filter)
- The fuel filter is almost new (and I have no lack of power or anything irregular regarding this point.)
- the previous owner told me that the injectors were checked not a long time ago (1 or 2 years).
- I double check to see if my speedometer is wrong (I'm runing 31" tires). It seems to be right, I checked it with a friend running at 90km/h on the highway beside of me. I also checked with a gps and everything seems to be ok. I heard that sometime, on this kind of truck, the speedometer goes on and off, so I mesured the milleage that I get on a 100km trip with my other (new) car and compared it with mine, they are similar.
- no leak at all (oil, fuel, coolant, etc.).
I've seen my mechanic about this problem and he told me that the diaphragm seems to be a bit old, I changed it. Now I have a better acceleration (but I still feel like I'm driving a tractor, no worries, I like this feeling), but the fuel consumption is still the same.
Maybe it's winter? Well, it's still really high, no? Is it a hoax when people claim to have something between 8 to 12L/100km (most of the time around 9L/100km)?
My next step will be to bring my injectors to an injection shop to test them and maybe rebuild them.
Anyone as an idea of where the problem can come from?
- The only other thing that can make a difference is that the fuel/water separator (sedimenter) was removed.
But since I have it (mid-november 2008) I'm getting a really high fuel consumption.
- When the hubs are locked, driving in 4x4 high range, city driving, I can go up to 22L/100km.
- When the hubs are free, no 4x4, highway driving, I still get over 17L/100km...
In more or less 2 months, the lower fuel consumption I had was around 16.5L/100km.
Moreover:
- I drive like an old grandfather, slow and steady, 90km/h on the highway, I never make it rev too much (2500rpm at max).
- Everytime I put fuel, as i'm putting ULSD, I put some Cetane/Antifreeze additive.
- I run 5w40 synthetic oil. (3 000km since last oil change). the engine doesn't burn oil.
- the coolant is new (green one), the temperature of the engine is steady at 190 fahrenheit when the engine warms up.
- The air filter can't be cleaner than what it is. (I have a K&N air filter)
- The fuel filter is almost new (and I have no lack of power or anything irregular regarding this point.)
- the previous owner told me that the injectors were checked not a long time ago (1 or 2 years).
- I double check to see if my speedometer is wrong (I'm runing 31" tires). It seems to be right, I checked it with a friend running at 90km/h on the highway beside of me. I also checked with a gps and everything seems to be ok. I heard that sometime, on this kind of truck, the speedometer goes on and off, so I mesured the milleage that I get on a 100km trip with my other (new) car and compared it with mine, they are similar.
- no leak at all (oil, fuel, coolant, etc.).
I've seen my mechanic about this problem and he told me that the diaphragm seems to be a bit old, I changed it. Now I have a better acceleration (but I still feel like I'm driving a tractor, no worries, I like this feeling), but the fuel consumption is still the same.
Maybe it's winter? Well, it's still really high, no? Is it a hoax when people claim to have something between 8 to 12L/100km (most of the time around 9L/100km)?
My next step will be to bring my injectors to an injection shop to test them and maybe rebuild them.
Anyone as an idea of where the problem can come from?
- The only other thing that can make a difference is that the fuel/water separator (sedimenter) was removed.
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