Can Cylinder 2 misfire be a lifter if not d.o.d.?

612 Views 4 Replies 3 Participants Last post by Gozzie, Nov 22, 2016

bensaccount

Discussion Starter · Nov 22, 2016

I am asking because we have a 2008 Sierra 5.3 that we have done everything to in an attempt to fix it. It is not a D.O.D. CYLINDER, so can it possibly be that it needs a lifter swap if it is cylinder 2 and not a displacement on demand cylinder?

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Gozzie

· #2 · Nov 22, 2016

misfire can on any cylinder and can be from many sources. Let us know what you have already done.
spark plug
plug wire
coil
injector
Are you getting any noises ? Any other codes ?

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bensaccount

Discussion Starter · #3 · Nov 22, 2016

All of the above twice. Everything has been checked off. Before we do the lifter, can that be the problem on a cylinder that is NOT d.o.d. is the question. Is that even possible.

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ASTE25

· #4 · Nov 22, 2016

Have you done a compression test?

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Gozzie

· #5 · Nov 22, 2016

sure, any lifter can go bad. Is it constant or intermittent ? I think they are usually accompanied with some noise from not pumping up correctly but not sure.
Read this, it may help you out more http://www.random-misfire.com/

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