SW Stahl PROFI Tools 01424L, Instruction Manual

Page: 10 / 12

www.swstahl.de
SW-Stahl GmbH
An der Hasenjagd 3
D-42897 Remscheid
Tel. +49 (0) 2191 / 46438-0
Fax +49 (0) 2191 / 46438-40
E-Mail: info@swstahl.de
BEDIEUNUNGSANLEITUNG
/ INSTRUCTION
MANUAL
01424L
This is by no means an exhaustive list of tests. The hand pump and adaptors can be used
to test practically any component or system that requires proper sealing, vacuum or
pressure to operate.
USING THE AUTOMOTIVE VACUUM & PRESSURE TEST KIT TO TEST FUEL SYSTEM
There are several uses for the BGS vacuum/pressure tester regarding the fuel system.
These range from bleeding the fuel system to testing pressure regulators. By using the
appropriate connector from the selection included in the kit, most vacuum pipes can be
interrupted. When bleeding diesel fuel systems, it is recommended that the reservoir pot
is used. This creates a vacuum in the pot and the diesel fuel is drawn in. This may need
to be completed a few times before the procedure is complete. Connect the pot and gauge
between the fuel filter and distribution pump.
Fault Indicator (Comparative to normal engine at idle
16-22inHg
NORMAL ENGINE Reads steady at between 16inHg and 22inHg
WORN VALVE GUIDES
Reads lower than normal and fluctuated rapidly in a
range of approximately 3inHg. As the rpm increased,
the reading will become increasingly steady
BURNED OR LEAKING VALVES Will fluctuate between low and normal at regular
intervals
STICKING VALVES Will demonstrate rapid and intermittent drop in
vacuum pressure
PISTON RING LEAKS
Will be low constant and demonstrate a rapid leap
following a quick throttle opening and closing. The
vacuum reading at idle will be low but steady at
approximately 12inHg to 16inHg. Increase the
engine speed to 2000 rpm and close the throttle
suddenly and the vacuum should increase 2inHg to
5inHg above its low steady reading. A smaller
reading may indicate faulty rings
BLOWN CYLINDER HEAD
GASKETS
At idle the reading will fluctuate between a normal
and a low reading. The vacuum will drop
approximately 10inHg from the normal reading and
return to normal each time the defective cylinder or
cylinders reach lining point
INCORRECT IDLE AIR/FUEL
MIXTURE
Rich mixture will read as a slow up and down
movement over a range of around 4inHg-5inHg.
Lean mixture appears as a drop over the same range
LATE IGNITION / VALVE TIMING Steady low vacuum reading at idle indicates late
ignition or valve timing or a uniformly close setting of
the valve lash