Mazda B-Series 1997 Workshop Manual page 401

FT
TROUBLESHOOTlNG GUIDE
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STEP
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INSPECTION ACTION
6 Is strong blue spark visible at each disconnected
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high-tension lead while cranking engine?
No Check as follows:
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High-tension leads
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Section G
Crankshaft posltlon sensor
a *
Section G
Camshaft posit~on sensor
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page FT-168,174,180
Yes
Is there a restriction or leak in exhaust system?
page FT-156
Check spark plugs for improper gap, cracks or worn
electrodes
Clean or replace as necessary
~r--
Section G
If OK, go to next step
Yes Check exhaust system
. ; ; z
page FT-156
GO
to next step
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If vehicle has MT, go to next step.
Inspect automatic transmission (AT vehicles only).
.a
Section K
Is automatic transmission OK?
Yes
Go to next step
Check for cause
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Section K
Is engine compression correct?
ux
For 2.3L: Section B1
For 3.OL: Section 82
For 4.OL: Section 83
Remove PCV valve and shake it. Yes Install PCV valve
Does PCV valve rattle?
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Go to next step
Is the cooling system functioning properly?
- -
Replace PCV valve
Go to next step
Repair or replace
; Is the brake system functioning properly?
*
Section P
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Is air leakage felt or heard at intake air system
components while racing engine to higher speed?
No
Yes
-
No
Yes
No
Repair or replace
Go to next step
Go to next step
p p
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Inspect coollng system for cause of overheating
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For 2.3L: Section E l
For 3.OL: Section E2
For 4.OL: Section E3
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Verify test results. If OK,
return to diagnostic index to service any additional symptoms
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