Fuel, Intake, & Emissions

How do I identify my carburetor size?
Both SU and Zenith-Stromberg carburetors are measured across the opening on the manifold flange of the body. Zenith-Stromberg units are identified by th...
Wed, 11 Jan, 2023 at 4:26 PM
Fuel Pump Types and Applications
The SU and Zenith-Stromberg carburetors used on most British sports cars require very low fuel pressure, which should optimally range between 1.5 to 3 psi. ...
Wed, 11 Jan, 2023 at 4:36 PM
Common Fuel Gauge Issues and Troubleshooting
To check the fuel gauge on most Smiths type systems, turn the ignition to ON and remove the wire (usually green with a black tracer) from the sender unit. T...
Fri, 3 Mar, 2023 at 9:11 AM
Bad Fuel Pump Symtoms & Diagnosis
ELECTRIC FUEL PUMP FAULTS INSUFFICIENT FUEL Air leak at intake side of pump Air leak at diaphragm flange Leaking valves Perforated or faulty diaphragm...
Wed, 11 Jan, 2023 at 4:57 PM
SU & Zenith-Stromberg Fuel and Carburetor Symptoms & Diagnosis
Before adjusting the carburetors, verify that the following items have been checked for proper operation. Many suspected carburetion issues are actually cau...
Fri, 13 Jan, 2023 at 1:44 PM
Carburetor Applications
TypeSizeUsed On H1 1 1/8 Austin-Healey Sprite Mk I H2 1 1/4 MG TC, MG TD, Mini HS2 1 1/4 BMC A-series 948cc/1098cc/1275cc H4 1 1/2 Austin-Healey 1...
Wed, 11 Jan, 2023 at 5:00 PM
Constant Depression Carburetor Faults
Wed, 7 Dec, 2022 at 12:38 PM