Search results

I would second adding a lift pump, but the good ones are expensive. You could maybe buy a universal 12 V pump and pressurize the fuel system temporarily to pinpoint the leak.

For what it's worth, I haven't seen a Michelin LTX that didn't wear the outer tread prematurely. Seems like a chronic problem with that tire.

A few thoughts I have: Cold diesels will emit some smoke/steam. It's hard to tell from the video how quickly the smoke evaporates. If it evaporates quickly, I would consider it steam rather than smoke. The LBZ has an intake heater. If that's not working it could affect smoke output. Although I...

Those balance rates are really good. Do you know if they were taken with the truck warmed up?

You're probably thinking of the LB7. They used a metal return line and had a passage through the head. The LLY and newer engines have rubber lines. Each bank of injectors is teed together. See the image below.

Could be a return line leak. The return lines are small rubber hoses with plastic fittings that push into the top of the injectors. IOW, not designed to handle any significant pressure or volume. If the injectors were returning a large amount of fuel, as yours were, the returns line(s) may have...

The pressure regulator is on the CP3, which is directly under the Tstat housing. You may have pinched a wire. I did that the first time I did mine, only the coolant temperature sensor wires were the victim.

So it's an autocal. I would still try to read out the stock tunes. Sometimes when a tuner sets up an autocal, they will allow it to read and "self sign" tunes, as if they were supplied from the master Flashscan. If your Autocal was never linked to a Flashscan, though, I don't think you'll be...

If what you have is a Flashscan, you can just download the V7.5 or V8 editor directly from Efilive's website, and edit your tunes. If you have an Autocal, you may need to get that unlinked from your old tuner, and relinked to a different Flashscan before you can use it.

Do you have an Efilive tool already? If so, read out your stock ECM and TCM tunes. Adjusting the tire size parameters isn't terribly difficult. You can likely do it yourself.

Here are a few files you can try. If you want, you can upload your stock file, and I'll copy the changes into it, so the file will be compatible. Don't flash these files until you verify they're compatible.

Unfortunately, that's not enough information for me to guarantee that the file I posted is a perfect match. You have a few options at this point. If you know someone with an Efilive tool, maybe you could borrow it and get the information. You could buy a file that's a guaranteed match from a...

No, segments would be the part #s in my screenshot. The checksum numbers don't necessarily need to match as long as they are valid.

It's definitely possible you have a locked ECM. Efilive gives tuners the option to block reading when you build a tune. I'm not familiar with PCM Hammer, but Efilive will give you the ECM information, as you can see in my screenshot, even if you aren't able to read the file. If you can find...

Here

Here's a stock Bin. Just be aware that there can be differences even with the same operating system. I would recommend comparing to your truck's stock file to be sure it's compatible. I have a tow tune posted here: https://www.thetruckstop.us/forum/resources/60-hp-tow-tune.156/ It's from a...

I'm more southeast. Hudson area, half hour south of Albany.

I've actually been a member a few weeks now, just finally got around to saying hi. I'm a professional mechanic and hobby diesel tuner from upstate NY.

If the segment numbers of this tune are different than yours, open it in comparison to your stock file and copy most of the differences. But use common sense of course. Some of the differences are there for a reason. And of course change the VIN.