(c) Valve trouble. Low on first stroke, does not tend
to build up on following strokes; does not improve much
with addition of oil.
(d) Leaking head gasket. Same reaction as valve
Do not puncture
trouble on two adjacent cylinders, usually accompanied
insulation to make connection.
by indications of water in cylinders and/or oil.
(b) Connect timing light spark plug lead as shown,
(e) Carbon deposits.
and power leads to battery terminals.
considerably higher than specified.
(3) Engine ignition timing check.
If available equipment requires
(a) Remove cable from number one or number six
spark plug and install adapter (Figure 6-29) to connect
procedures, such as connection to a
115 volt source, use appropriate
Figure 6-29. Ignition Timing