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It's pretty sensitive, I'd say about 1/8-1/4 turn should be sufficient.

I looked at the DX report. When they were monitoring fuel pressure, they had 'engine drive forced stop' activated. I don't know why they would do this, but would it make a difference?

That is a load of bull. It's checked by pulling the injectors out, bolting in an adapter, hooking a gauge to it, and cranking the engine. There's not a method of doing a 'relative' compression test by evaluating cranking speed either ( international uses this method with their software)...

We figured Hinos are a good brand but aren't understood well. Aiming to fix that. Sent from my XT1585 using EO Forums mobile app

Maybe you can visit for an accurate diagnosis. Sent from my XT1585 using EO Forums mobile app

You know, there's another great Hino mechanic in this thread in your general proximity. Sent from my XT1585 using EO Forums mobile app

Part of it. Sent from my XT1585 using EO Forums mobile app

There are only four glow plugs, so checking compression involves removing injectors. Sent from my XT1585 using EO Forums mobile app

I doubt injectors. Your fuel temp hit 225*, suggesting a high rate of internal leakage. This is definitely in the range where the pump is suspect. Sent from my XT1585 using EO Forums mobile app

Can you tell me any other details about anything? Were you at the shop when they were looking at it? Something here does not add up. Sent from my XT1585 using EO Forums mobile app

This will end well. Sent from my XT1585 using EO Forums mobile app

Also, resurfacing these heads is not recommended. There's no provision for adjusting idler gear clearance. Sent from my XT1585 using EO Forums mobile app

Have the head pressure tested. Leave the cups in. Who installed the cups? There's an o-ring behind them that gets replaced. The cup is installed with a special sealant then swaged into place. Were these things done correctly? Oil cooler failure on these is rare. I replace them during...

Let's back up a second. It died on the road, it was towed to a dealer, they pulled P0087, the confirmed it had fuel pressure. Is this correct? Pm me your VIN. Sent from my XT1585 using EO Forums mobile app

First, injectors on these are almost always replaced in sets. Especially DPF equipped trucks. Next, troubleshooting a Hino without diagnostic software is going to be extremely difficult. Do you have DXII software? Sent from my XT1585 using EO Forums mobile app

Nothing inside the atomizer is available separately. I'm unaware of any updates to the atomizers. Sent from my XT1585 using EO Forums mobile app

Is it making fuel pressure? That's the first thing id look for. Sent from my XT1585 using EO Forums mobile app

There is a fuel restriction. Check the fittings in the tank, and the banjo fittings at the fuel filter. Debris will get stuck here. Sent from my XT1585 using EO Forums mobile app