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Product details
The EMPI 43-5384-0 is a .60 accelerator pump jet for Weber DCOE sidedraft carburetors, the jet that delivers a shot of fuel when the throttle opens quickly so the engine does not stumble before the main circuit picks up. A larger pump jet delivers more fuel per stroke. EMPI's DCOE pump jets (reference series 76801) come in .35, .40, .45, .60, .65, and .70, so the .60 is the first of the larger sizes.
The DCOE pump circuit also uses a pump exhaust valve, which EMPI lists for DCO and DCOE carbs in 0.000, .350, .500, and .550 sizes. A .60 pump jet suits an engine that still bogs on a sharp throttle opening once the idle and main circuits are sorted.
Technical Details
- Manufacturer: EMPI
- Manufacturer part number: 43-5384-0
- Part: accelerator pump jet
- Size: .60
- Reference series: 76801
- Carburetor: Weber DCOE
- Sold as: each
- UPC: 707924236163
Fitment & Compatibility
Fits Weber DCOE sidedraft carburetors. EMPI lists separate pump jet series for the 40/44 HPMX and 40/44/48 IDF (76210) and for the EPC 32/36 and 32/36 DGV (76215), so this jet does not interchange with those downdraft carbs.
Installation & Tuning Notes
Tune the pump circuit after idle progression and main jetting are working. Before going up a size, make sure the pump passages are clear and the pump reaches full travel. Change one size at a time and test with sharp throttle openings under load.
Common Questions
My DCOEs bog when I open the throttle quickly. Will a bigger pump jet help?
It can, once idle and progression are right and the pump circuit is clean. The .60 delivers more fuel per stroke than the .40 or .45.
What is the next size up?
The .65 (43-5385-0), then the .70 (43-5386-0).
