No. GM has a lot of trouble caused by grabbing a handful of injectors out of the bin and throwing them in an engine. They are not flow-matched and can cause one cylinder to run a little lean compared to the rest. The oxygen sensor will detect that and the Engine Computer will respond by requesting ALL of the injectors to spray more fuel. On higher-mileage engines that can show up as a misfire. Chrysler, and most likely most other companies, buy their injectors in matched sets so they don't have that problem. GM also has more injectors that become partially shorted so resistance measurements are useful in diagnostics. Injector failure on a Chrysler product is almost unheard of, but even on GM products, it's real unlikely to have all of them fail at once. However, the cure for the mismatched flow rates is to install a complete set of rebuilt injectors. Many GM owners say their engines never ran so smoothly as when the new set was installed.
Friday, October 14th, 2011 AT 6:30 PM