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Fuel system identification, Page 6, Continuous injection system fig.b – MAHLE RTI ESX-2 User Manual

Page 7: Continuous injection system fig.a, Port fuel injection fig. a, Port fuel injection fig. b, Carburetor fig. b, Carburetor fig. a, Throttle body fig. a, Throttle body fig. b

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Page 6

CONTINUOUS INJECTION SYSTEM FIG.B

FUEL DISTRIBUTOR

FUEL DISTRIBUTOR

CONTINUOUS INJECTION SYSTEM FIG.A

VEHICLE FUEL TANK

VEHICLE FUEL TANK

FILTER

PRESSURE LINE

ADAPTER

RETURN LINE

ADAPTER

ADAPTER

LOOP

ADAPTER

RETURN LINE

ADAPTER

FUEL

REGULATOR

PRESSURE

ESX BLACK HOSE

TEE ADAPTER

LOOP ADAPTER

RETURN LINE

ADAPTER

PRESSURE LINE

FILTER

ADAPTER

ESX RED HOSE

ADAPTER

RETURN LINE

REGULATOR

FUEL

PRESSURE

ADAPTER

PRESSURE LINE

ESX RED HOSE

PORT FUEL INJECTION FIG. A

VEHICLE FUEL TANK

PORT FUEL INJECTION FIG. B

VEHICLE FUEL TANK

LOOP ADAPTER

TEE ADAPTER

ADAPTER

ESX BLACK HOSE

PRESSURE LINE

RETURN LINE

FILTER

ADAPTER

ADAPTER

LOOP

PRESSURE LINE

RETURN LINE

FILTER

ADAPTER

ADAPTER

ESX RED HOSE

ADAPTER

ADAPTER

RETURN LINE

FUEL RAIL

PRESSURE

REGULATOR

FUEL

PRESSURE LINE

ADAPTER

ADAPTER

RETURN LINE

REGULATOR

PRESSURE

FUEL

FUEL RAIL

PRESSURE LINE

ESX RED HOSE

CARBURETOR FIG. B

ESX RED HOSE

THE CARBURETOR

GOING INTO

ADAPTER

CARBURETOR FIG. A

VEHICLE FUEL TANK

COMING FROM

FUEL PUMP

SUPPLY LINE

FUEL PUMP

ADAPTER

VEHICLE FUEL TANK

LOOP ADAPTER

FUEL PUMP

COMING FROM

FUEL PUMP

ADAPTER

ESX RED HOSE

SUPPLY LINE

TEE

THE CARBURETOR

CARBURETOR

GOING INTO

CARBURETOR

THROTTLE BODY FIG. A

TEE ADAPTER

THROTTLE BODY FIG. B

FILTER

FILTER

VEHICLE FUEL TANK

VEHICLE FUEL TANK

ADAPTER

ADAPTER

RETURN LINE

PRESSURE LINE

LOOP

ADAPTER

ESX BLACK HOSE

ADAPTER

RETURN LINE

PRESSURE LINE

THROTTLE BODY UNIT

ADAPTER

ESX RED HOSE

PRESSURE LINE

ADAPTER

RETURN LINE

THROTTLE BODY UNIT

LOOP ADAPTER

ADAPTER

PRESSURE LINE

ADAPTER

ADAPTER

RETURN LINE

ESX RED HOSE

Fuel System Identification

The Fuel System type must be determined before proceeding with any cleaning or diagnostic
procedures. The following four systems are the only types that can be serviced with the RTI ESX
unit.

Port Fuel Injection (PFI)- This system uses a single electronic injector per cylinder,
mounted such that fuel spray is directed into the intake port. (See Page 7)

Throttle Body Injection (TBI) - Centrally mounted, like the carburetor system, but utilizes
one or two electronic injectors. (See Page 11)

Continuous Injection System (CIS) - Look for the fuel distributor with solid steel or flex
steel lines running from the fuel distributor to each individual injector. The fuel distributor
controls the amount of fuel sprayed into the intake port while the injector controls opening
and closing pressure. (See Page 15)

Carburetor System - Sizes and shapes vary, but these systems are easily identified by
locating the choke plate underneath the air filter housing. (See Page 19)