How to find the right Automotive Performance Fuel Injection Fuel Distributors AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Automotive Performance Fuel Injection Fuel Distributors
- Exact part-number match (CIS)
- For Bosch K-Jetronic or KE-Jetronic continuous-injection fuel distributors, match the Bosch number stamped on the original unit, not just the car model. Distributors are calibrated per engine, and a near-match will not meter fuel correctly.
- New versus rebuilt
- Buy rebuilt CIS distributors only from a rebuilder that flow-tests and calibrates them. Note whether a core return is expected. Many CIS distributors are no longer made new, and a rebuild is only as good as its calibration.
- System pressures and companion parts
- Confirm system pressure, control pressure and the warm-up regulator are in spec before blaming the distributor. Rich or lean running on CIS is often caused by the warm-up regulator or system pressure, not the distributor itself.
- Performance distribution blocks
- For a fuel log or distribution block, match the inlet and outlet port sizes and thread standard (AN or ORB) to your feed lines. An undersized block can restrict flow to a multi-carb or multi-rail setup.
Brands that matter
- Bosch: The original maker of K-Jetronic and KE-Jetronic fuel distributors.
- Aeromotive: Fuel logs and distribution blocks for performance fuel systems.
- Russell: AN distribution blocks and fuel logs.
- Earl's: Fuel distribution blocks and fittings.
What to avoid
- Cheap remanufactured CIS distributors with no stated calibration or flow testing.
- Replacing the distributor before checking system and control pressures with a CIS gauge.
- Using carb-only distribution blocks on EFI pressure lines.