Checking fuel pump capacity, four-cylinderengine
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Checking fuel pump capacity, four-cylinder
engine
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1.
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Disconnect the return line from
the fuel injection manifold, using
special tool 83 94 702. Use a pair of flat-nose pliers to remove the
quick-coupling's rubber seal.
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2.
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Connect the adapter with hose, special tool 83 94 918, to the fuel
injection manifold's return line. Run the hose to a suitable
receptacle.
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3.
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Run the fuel pump for 30 seconds, using battery voltage from fuse No. 4
(input) connected to fuse No. 32 (output) in the fuse box.
Use a jumper lead, special tool 83 93 886.
During 30 seconds of operation the fuel pump should deliver at least
700 ml of fuel to the receptacle.
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Important
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In all work involving disconnection of the fuel line quick- couplings,
great care must be taken to avoid damaging the sealing surface of the
male coupling half. If the male coupling half is extremely dirty it
should be cleaned before removal. Also clean the sealing surface after
removal, if necessary. Use a soft cloth. Lubricate the male coupling
half with motor oil before fitting.
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