Therefore, instead of a size, you need the flow rate specification. Finding the exact factory specs for these older vehicles can be tricky, as the information isn't always readily available in a simple format. However, here's what we can say:
* 1986 Pontiac Fiero GT 2.8L V6: The injectors on these are generally considered to be in the 19-22 lb/hr range. You'll need to consult a parts catalog, a repair manual specific to that year and model, or a reputable online forum dedicated to Fieros to get the precise factory specification.
* 1993-1995 Chevrolet 3.4L V6: These engines also varied somewhat depending on the specific application (e.g., Camaro, Firebird, Lumina). However, you'll typically find injectors in the 22-24 lb/hr range. Again, to be absolutely certain, you'll want to find a parts catalog or service manual for the precise vehicle.
Where to find more precise information:
* Parts Catalogs: Websites selling parts for these vehicles (like RockAuto, Summit Racing, etc.) will often list the fuel injector flow rate in their descriptions. You'll need to search by the year, make, and model of your car.
* Service Manuals: A factory service manual (often available online in PDF format) will have the most accurate specifications.
* Online Forums: Forums dedicated to Fieros and Chevy V6s (like those on specific car enthusiast websites) are excellent resources. Experienced mechanics often post there, and members often share this information.
In summary: While general ranges are given above, it's crucial to confirm the *exact* flow rate using the resources mentioned above for accurate replacement or modification. Using the incorrect injectors can lead to poor engine performance and potential damage.
