SELVA MARINE Fin Whale 225 EFI, Service Manual

Page: 387 / 399

6AL3J11
9-22
1
2
3
4
5
6
7
8
9
Symptom 1: High engine idle speed (below 1,200 r/min)
Symptom 1: Engine stalls, unstable engine idle speed, or poor acceleration
Symptom 2 Cause 1 Cause 2 Checking step
Refer
to
page
—
Air leakage (throttle
valve-cylinder
head)
—
Check the O-rings
and gaskets of the
intake manifold,
surge tank, and
throttle body. 4-9
4-13
Symptom 2 Cause 1 Cause 2 Checking step
Refer
to
page
Incorrect intake
cam timing
(check using the
YDIS) Variable camshaft
timing operation mal-
function Stuck oil control
valve plunger Check the oil con-
trol valve operation
using the YDIS.
Check the oil con-
trol valve plunger. 8-36
9-1
Clogged oil control
valve filter Replace the oil con-
trol valve filter. 5-43
Clogged oil pas-
sage Check the oil pas-
sage. 5-1
Stuck variable cam-
shaft timing Replace the vari-
able camshaft tim-
ing. 5-7
Troubleshooting the power unit