Update: The surging stopped....took me by surprise

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nycxjeremyy

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Jeremy
Truck Year
1990
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K5 Blazer
Engine Size
6.2 Detroit Diesel
A few of you may know me from my 6.2 posts about my motor surging, well, it stopped....I powered it on today and it ran without it surging.

It would usually surge after 10 minutes, 1 hour later and it's acting normal, the ONLY thing that puzzles me is this:

It does do a TINY bit whenever I'm at a high speed and then let go of the throttle

- full throttle to like 45ish (Or a decent speed)

-let go of pedal completely

vroom...vroom..... idles/runs normally

Other than that, it's running normally??? I'm glad it's fine but still, took me by surprise

(Note: it has warmed significantly since my previous post, it's now 45°F compared to -5°F)

Idling: https://photos.app.goo.gl/k6Z2jBduBCJy6iAu8

Under the hood: https://photos.app.goo.gl/571CfUtfh8xz8hEP9

(Edit: it still struggles to start, even with the new batteries, it'll crank well and then start/turn over, but then it shuts down completely, and I'd have to restart the cycle process hoping it starts, its weird. Not sure what that is)
 
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backwoodsman

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Dan
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1983
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GMC Suburban K1500
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6.2L diesel
You never responded on the other thread. Did you ever check the fuel return line to see if it's plugged? Is any air getting into the fuel lines?
 

nycxjeremyy

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Location
Midwest
First Name
Jeremy
Truck Year
1990
Truck Model
K5 Blazer
Engine Size
6.2 Detroit Diesel
You never responded on the other thread. Did you ever check the fuel return line to see if it's plugged? Is any air getting into the fuel lines?
I have yet to check that, now that it is significantly warmer outside I will
 

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