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Duramax First Generation: 2001-2004 (LB7) Discuss the first generation (2001-2004 LB7) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 03-19-2020, 11:33 PM   #1 (permalink)
tidbit089
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Should I adjust valves

I have a 2002 lb7 that runs great has great oil pressure and does not use or leak any oil. I have 360,000 miles on it and just wondered if I should adjust my valves. Any advice would be appreciated! Thx guys

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Old 03-20-2020, 11:33 AM   #2 (permalink)
SpikeDmax
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Yes, it's recommended every 100K as a general guideline. It's not very difficult and usually done when injectors are replaced since everything is off. Would I make a special effort just to adjust valves....no way! You run the risk of contaminating injectors while pulling off fuel lines with rust particles.

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Old 03-21-2020, 01:00 PM   #3 (permalink)
axysassault
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Quote:
Originally Posted by SpikeDmax View Post
Yes, it's recommended every 100K as a general guideline. It's not very difficult and usually done when injectors are replaced since everything is off. Would I make a special effort just to adjust valves....no way! You run the risk of contaminating injectors while pulling off fuel lines with rust particles.
This.....

The picture shows how much rust can fall into the injector line connection.20190330_162833.jpg

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Old 03-23-2020, 04:22 PM   #4 (permalink)
sfcjones
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I will only consider valve adjustment during injectors changes.
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Old 03-24-2020, 08:20 AM   #5 (permalink)
oldschoolbowtie
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Quote:
Originally Posted by SpikeDmax View Post
Yes, it's recommended every 100K as a general guideline. It's not very difficult and usually done when injectors are replaced since everything is off. Would I make a special effort just to adjust valves....no way! You run the risk of contaminating injectors while pulling off fuel lines with rust particles.


if it aint broke don't fix it

but do take prudent preventive maintenance steps when the time is right
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