A failed fuel injector will be blatantly obvious and the ensuing misfire will be easily detectable. Additionally, a misfire DTC should be set (check engine light will illuminate), identifying the dead cylinder. On that note, injectors may be replaced individually as necessary; they do not need to be replaced in sets. However, 6.0L Power Stroke injector life is typically in the 150,000 to 200,000 mile range, with most owners beginning to experience symptoms of injector trouble at the early end of that spectrum. If the fuel injectors fit into this range we highly advise replacing all 8 injectors simultaneously to reduce labor cost and time. If a single high mileage injector fails, the remaining seven are likely close to a similar fate. Neglecting to replace worn injectors may result in excessive fuel dilution of the engine oil and therefore increased engine wear.
There are many components hidden under the valve covers that we highly recommend replacing if they have not recently been done so. At the very least, the high pressure oil rail nipple cups/ball tubes, nipple cup seals, and standpipes should be replaced on high mileage engines. 6.0L Power Stroke nipple cups and nipple cup seals are particularly important components that can cause a reduction of oil pressure to an injector. Recall that with both the 7.3L and 6.0L Power Stroke engines, oil pressure is everything when it comes to injection pressure.
6.0L POWER STROKE INJECTOR PART LIST
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