Exhaust Leaks - SPX LeakMaster 6525 Manual Del Operador

The exhaust cones were developed for the identifi-
cation of leaks in a vehicle's exhaust system. These
leaks can be difficult to locate, because they are often
hidden by metal shields, or become silenced as the
engine warms up.
1. Put the vehicle on a lift to expose the underside.
2. With the engine OFF, insert the exhaust adapter
cone into the tail pipe as shown.
On dual exhaust systems, install a cone in each tail
pipe.
3. Attach the tester's SMOKE supply line to the hose
on the exhaust cone.
On dual exhaust systems, verify the other exhaust
cone is plugged with the cap plug supplied with the
cone.
4. Press the remote button once to start the flow of
smoke.
5. Using a spotlight, follow a path along the vehicle's
exhaust system, and look for the source of the leak
(exiting smoke).

Exhaust Leaks

Exhaust Cones
Insert the exhaust
adapter cone into
the tail pipe.
Tech Tips
• This test is more accurate when testing a
cold exhaust system, because a very hot
catalytic converter consumes some of the
smoke. Also, many small exhaust leaks are
only visible on a cold exhaust system, due
to thermal expansion.
• Seal the vehicle's intake system with the
cap plugs provided – this achieves correct
system pressure in the event both an intake
valve and an exhaust valve are open in the
same cylinder at the same time.
13