gooffeyguy
Tom
Reason I asked is because E85 will clean up carbon from combustion chambers, so curious if it would've cleaned those up
What did you do to your NNBS GMT900 Tahoe/Yukon Today?
- Thread starter phattyford
- Start date
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swathdiver
Full Access Member
Looks like it was laying next to the Titanic! I'm always on the hunt for new 41-985s!
donjetman
Full Access Member
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- Oct 22, 2018
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Yes & No
No, the grubby plugs are pics of when I first purchased the vehicle and before I cleaned them and did all the other work I previously described(Dec 2018). They've been in the vehicle untouched ever since.
Yes, in 2020 I drove it for about 6 mths and 3000 miles on a 20-25% mix of E85 and regular 87 octane unleaded.
Since 2018, when those grubby plugs were cleaned, it has been driven on "all" grades of unleaded gasoline. Only once in the 3 yrs and 40k miles that I have owned it have I gotten a knock sensor DIC. That was on a long hwy trip while running 87 octane.
In 2021 it has only been feed premium unleaded.
Just Fishing
Can't fix stupid
Today is the day.
pulling crossmember, front axle, Oil Pan, pickup tube, and windage tray.
Hoping i can clearly see damage and it's just bearings.
If all looks good, then the engine is getting pulled.
I'm pretty sure the issue was the highflow pump.
If yes, then it's probably a rod bearing since it's last to get lubed.
crossing fingers.
pulling crossmember, front axle, Oil Pan, pickup tube, and windage tray.
Hoping i can clearly see damage and it's just bearings.
If all looks good, then the engine is getting pulled.
I'm pretty sure the issue was the highflow pump.
If yes, then it's probably a rod bearing since it's last to get lubed.
crossing fingers.
RooTBeeRthe1st
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- Jul 11, 2018
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Tonyrodz
Resident Resident
You think the high flow pump was faulty? Not putting out enough pressure?Today is the day.
pulling crossmember, front axle, Oil Pan, pickup tube, and windage tray.
Hoping i can clearly see damage and it's just bearings.
If all looks good, then the engine is getting pulled.
I'm pretty sure the issue was the highflow pump.
If yes, then it's probably a rod bearing since it's last to get lubed.
crossing fingers.
CaptainAmerica1
Full Access Member
He ran the sump dry on startup from too much flow…
Tonyrodz
Resident Resident
That's a thing? That sux.
CaptainAmerica1
Full Access Member
I think that’s what he said a few pages back…
Installed my new spare tire winch and tool kit. Feels good to have a spare back on board.
