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If you change fuel filters and it doesn't seem to want to prime, don't pressurize the tank with compressed air. There's a risk of blowing the shaft seal out of the fuel pump. This will fill the crankcase with fuel and blow up the motor, if it ever starts. Just refill all the filters and start...

Fuel filter heaters are optional equipment, and they should be used to prevent fuel gelling. The pretreatment of fuel with antigel isn't recommended because many of these products have water remover (often alcohol) added to them.

Fuel additives are not recommended, especially those used to remove water. Emulsified water will permeate fuel filters, leading to injector tip damage. The injectors are very precise and have very small tolerance, and when water is introduced to this environment, it explosively evaporates and...

There are current recalls on just about all trucks, 08-14, computer reprogramming, that help control soot, improve burner operation and reliability, burner ignitor performance, and address def freezing in cold climates. Some trucks will get new oil vapor separator lines, along with canister...

Some common things: The oil coolers leak. Three 'D' rings between cooler housing and block. Use right stuff Rtv, its tougher than the Hino stuff, and much less expensive. All 08-10 trucks with a Dpf : the intake throttle valve on all six cylinder engines have to be modified. If the black...

Spongebox1, Occasionally the molded seal between the rocker box and head starts leaking. Only happens on older, high mileage trucks. The first time you remove the rocker box is a huge exercise in patience. The rocker shaft and cam have to come out. Timing this thing is easy enough, but once...

More turbo stuff: I don't know if this applies to an 06 or not, but 08-10 I know it does. Oil vapor canister on top of engine, between air compressor and valve cover, it's a black cylinder with a removable cap, but there's nothing really in there, it just allows oil vapor to condense, and...

Spongebox1 called me for a quick chat. Almost an hour passed. I think we covered 50 different topics, minimum. Half of them were about jackleg mechanics. These things require someone who doesn't throw wrenches across the shop, and they reward you for using a torque wrench vs an impact...

Also, we've seen where the engines are overfilled with oil by the drivers, and the high oil level will aggravate leakage in a specific way. The aluminum plate on the front of the engine that retains the front main seal...it looks like it has two little weep holes, one on either side. They're...

On the side of the rocker box, among the injector lines, is a small steel line with banjo bolts on either end. You'll want to remove that, and put about 30 psi of regulated compressed air into the rocker box. The passage connects to the injector return pipe. If you see leakage at all...

phone # sent.

I found the "My Hino Disaster" thread. Ouch. I have several thoughts about that whole debacle, but that would mean typing a small novel.

Hi all. I've been working on Hino trucks almost exclusively for the last few years, and I'm pretty familiar with their ins and outs at this point. If anyone has a question, I'll be happy to answer it, if I know the answer.

Ask away! Anything specific you'd like to know?

Yes, there's a special tool. It would be very difficult to install the seal perfectly without it. It's an unusual seal design, and they don't usually leak unless there's another problem. Overfilling the crankcase oil is a common cause. Leaking injector return pipe under the valve cover...

Hi all, first post here. I was googling something when this thread caught my eye. I figured I'd sign up. I work on Hino trucks and I have some input. How did the turbo fail? Usually, either the VNT controller is damaged, or enough radial play develops in the bearings that it can't control...