LB7 Duramax injectors are largely throwaway items. Very few people rebuild them, simply because the cost of a new body is less than the effort of rebuilding it.

Unfortunately, Duramax injectors are both expensive and difficult to reach in the engine compartment for replacement, which prompted GM to extend its injector warranty to 200,000 miles.

Earlier Duramax trucks were plagued with fuel injector issues. However, the common consensus is that General Motors rooted out the problems with the LB7, an earlier model of Duramax, and different ...

Take a look at part 2 of rough running. Diagnosing a failed or clogged fuel injector can be tricky but here are some tips to help.

The downstream injector [behind the exhaust] for diesel particulate filter regeneration means we also won’t have a worry of oil dilution with B20 fuel from in-engine post injection [like is used ...