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Old 10-14-2022, 10:28 PM   #8
jeepmor
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Join Date: Apr 2014
Drives: 84 CJ7, 08 Duramax, 2014 FRS
Location: Oregon
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Thanks again for the tip on the HKS tablet Turdinator. There is a car status mode on the HKS flash editor tablet displaying up to 23 parameters. But you only get to view 14 at a time, real time. Cool to watch how the injectors cycle sitting in the driveway. When you rev up, both engage, when you hit and hold an rpm, the port injectors turn off and the DI's run it. Looks like the port injectors are the parallel to the accelerator pump in a carburetor.

Anyhow, nice to look at, but no means to log the data other than recording it on my phone while doing some pulls.

On the what I'm doing front, I'm running injection cleaner at the moment. I ran a tank with it, then added a large bottle of the Gumout product when my low fuel light came on. I drove it back and forth on my commute and logged about 30 miles before I filled up the tank again. I've done a couple smooth pulls up to 7k and it was fine. Then I mashed for a hard pull
and felt it stutter a couple times as it swept through 6-7k rpm. Backed out and just finished my drive. This did not throw a CEL light.

Again, below the hitting up near the RPM limit, the engine runs fine. It's only when giving it all the juice. This does lead me to stay on the cleaning injectors line for a bit more before I run into a shop. Already called my local shop for their cleaning machine cycle that doesn't tear the injectors out and it runs $160. Expect this may be my next step.

If I still have issues after that, I'll be going to my local area tuner shop, Surgeline south of Portland. They're 10 minutes from work. If it ends up on the dyno to troubleshoot, I'll likely have them give it a tune if the issue isn't my engine is about to grenade. If I have something clogged, like my cat, it's not giving the sensors any grief yet. I keep checking my antifreeze for signs of combustion schmutz, nothing there to note either. My startup isn't throwing any smoke/steam of antifreeze or such either. If it a blown head gasket, I have 108k on it, about 28 more than usual subi engines. Haha.

Last edited by jeepmor; 10-14-2022 at 10:58 PM.
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