CMoore711
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Awesome! That’s good to know.
What did you do to your 2015-2020 K2XX Tahoe/Yukon Today?
- Thread starter soulsea
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Awesome! That’s good to know.
that bar must have been made on a friday before the superbowl at 4:59 pm lol. I have never seen a bent one
hellwig is a good company
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OUR STORY Hellwig Products was founded in 1946 after World War II and has remained family owned and operated to this day, manufacturing all of its steel products in California’s Central Valley. In an era when many companies have moved production of their products overseas, Hellwig has remained...
wife's rig has developed a cylinder 2 cold start issue, swapped coils no change, plug looked fine and only has about 12k on it but I am going to grab a new one anyway and see if it makes any difference, maf data looks ok and fuel pressure is good, 02 sensors are original with just a hair over 100k on them data looks ok but they will get changed anyway soon
if a new plug doesn't change anything then I guess it needs to go in for a injector test, injector data looks ok that doesn't mean anything though a physical test will make that determination
if a new plug doesn't change anything then I guess it needs to go in for a injector test, injector data looks ok that doesn't mean anything though a physical test will make that determination
actually I will probably just swap plug 2&3 when it cools back off a bit and see what happens, hot as ballz out right now
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NYBRD
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Lifter dead ?
noo it runs fine, just a cold start misfire mainly, no noise or ticking, no rotational noise or anything, after the first 30 seconds or so (cold start) the misfire count pretty much goes away but still counts random here and there. I am "guessing" lazy injector if not the plug. It has "special coverage" for the injectors for like 15 years or something like that so obviously it's a known issue. I don't know if the coverage requires a specific code or not but there is no injector codes just what I can see with the scanner.
it's been throwing the cold start rough idle code random for around 3 months and I have just been clearing it, but now it is getting worse.
monitoring live data it will give a random 2-4 misfire count on cyl 2, almost always while under a load though and not while parked
**small chance it could be electrical related
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so
coil swap-no change
spark plug swap-no change
no knock retard
no knock detected on cyl2
engine is quiet as a mouse, no tick, no knock, no nada nothing (other than the annoying wind in my video)
no injector shutdown
afm is disabled
i'm stumped I am leaning towards a lazy injector mostly when cold or it has sat for a while
coil swap-no change
spark plug swap-no change
no knock retard
no knock detected on cyl2
engine is quiet as a mouse, no tick, no knock, no nada nothing (other than the annoying wind in my video)
no injector shutdown
afm is disabled
i'm stumped I am leaning towards a lazy injector mostly when cold or it has sat for a while
Marky Dissod
Full Access Member
Never forget to check for suspect wiring, in case it's NOT the injector itself.
If you switch the suspect injector to a different cylinder, does the fault follow the injector?
If you switch the suspect injector to a different cylinder, does the fault follow the injector?
the injectors are under the intake on the k2's so it's going to the dealer for a deeper diagnostic since it has special coverage for the injectors. I don't have any way or the tools to load test a injector. I figure it is a 50/50 chance that they determine it is a injector or they find a electrical fault. If it is the injector then there should be no charge.
by the time I pulled the intake off and swapped injectors to turn around and have to take the intake off again that's a lot of my time invested to maybe still find not the issue.
If the dealer determines it is something else I can tackle with just a diagnostic then I am only out $180. I don't think it is anything internal, it's kind weird that it is also being super touchy on the pedal, you barely touch the pedal and it wants to go like it's running 120 octane, no lack of power.
went out this morning while it is "technically" cold again, no misfires, throttle response normal. drove it a mile or so giving it lots of throttle to warm it up, shut it off and restarted a few times, let it sit, restart, drive again. perfectly normal................ wtf misfire count didn't change from yesterday.
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