VW MKII A2 MK2 Golf Jetta Fox Service Manual - VAGLinks.com

4A•6 Fuel and exhaust systems - carburettor models
4.5 Upper view of air temperature sensor -
1.3 litre
5 If the control unit does not operate correctly
then renew it, together with the temperature
sensor (see illustration).
6 Refit the vacuum unit and inlet pipe.
5 Fuel pump - testing, removal
and refitting 3
Testing
1 Pump location is dependent on engine type
and is as follows:
a) 1.05 and 1.3 litre engines - The pump is
located on the right-hand side of the
engine, forward of the carburettor (see
illustration). Mounted on the cylinder
head, it is driven indirectly from the
camshaft.
b) 1.6 and 1.8 litre engines - The pump is
located on the side of the cylinder block,
next to the oil filter mounting bracket. It is
driven direct from the intermediate shaft.
2 If the pump is suspected of malfunctioning,
disconnect the supply pipe from the
carburettor (air cleaner removed) and the LT
lead from the coil positive terminal. Ensure
that there is fuel in the tank. Turn the engine
on the starter while holding a wad of rag near
the fuel pipe. If the pump is operating
correctly, well defined spurts of fuel should be
ejected from the pipe.
3 If the pump is malfunctioning then it must
be renewed, as it is not possible to service or
repair it. However, prior to removal of the
pump, check the in-line filter for blockage.
5.1 Fuel pump location - 1.3 litre
Removal
4 To remove the fuel pump, first identify the
hoses for position then disconnect them from
the pump (see illustrations).
5 Using a suitable splined or Allen key,
unscrew the pump retaining bolts and
withdraw the unit from the cylinder head or
cylinder block (as applicable). Remove the
sealing ring and, if applicable, note the earth
lead location.
1081 VW Golf & Jetta
5.4a Fuel line attachments – 1.05 and 1.3 litre
5.4b Fuel pump and line connections –
1.6 and 1.8 litre
6 Clean the mating faces of the pump and
cylinder head or cylinder block/seal flange.
Refitting
7 Refitting is a reversal of the removal
procedure. Renew the seal ring and, where
crimped type hose clips were used, change
them to screw type clips.
8 On completion, check all hose connections
with the engine running and look for any sign
of fuel leakage.