Mazda B-Series 1997 Workshop Manual page 63

TROUBLESHOOTING GUIDE
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Problem Possible Cause Action
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Insufficient power Insufficient compression
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Malfunct~on of HLA*
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Replace
Compress~on leakage from valve seat
1
Repair
1
Se~zed valve stem
1
Replace
1
Weak or broken valve spring
1 Replace
Damaged cylinder head gasket
1
Replace
Cracked or
distorted
cyllnder head
Stlcklng, damaged, or worn plston rlng
Cracked or worn plston
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Malfunction of fuel system
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Malfunction of ignition system
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[-others
Slipping clutch
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Dragglng brakes
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Wrong size tlres
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p p p
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Abnormal Malfunction of engine-related components
Replace
Replace
Replace
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Refer to Sectlon FT
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Refer to Sectlon G
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Refer to Sectlon H
Refer to Sectlon P
Refer to Sectlon Q
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combustion Malfunct~on of HLA* Replace
Stlcklng or burnt valve Replace
Weak or broken valve spring Replace B1-38
Carbon accumulat~on ~n combust~on chamber
El~m~nate carbon
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~alfunction of fuel system
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Refer to Sectlon FT
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Malfunction of ignition system
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Engine noise
Crankshaft- or bearing-related parts
Excessive maln bearlng
011
clearance Replace or repalr 81 -49
M a ~ n bearing se~zed or heat-damged
B1-45
Excesslve crankshaft end play Replace or repair B1-50
Excess~ve connecting rod bearlng
011
clearance
B1-52
Connecting rod bearlng selzed or heat-damaged
B1 -45
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Piston-related parts
Worn cylinder 81 -40
Worn plston or plston p ~ n
81 -41
Selzed plston B1-41
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Damaged plston rlng
81 -42
Bent
connecting
rod 81 -43
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Valves or timing-related parts
Malfunct~on of HLA* Replace B1-6
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Broken valve spring
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Replace
B1 -38
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Excessive valve gu~de clearance
B1 -36
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Replace
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7
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Malfunct~on of cooling system
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Refer to Sectlon E l
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A
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1
Malfunction of fuel system +Refer to Sectlon FT
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/Others
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Malfunct~on of water pump bearlng
Worn dr~ve belt
Malfunction of generator bearlng
Exhaust gas leakage
Refer to Sectlon E l
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Replace B1 -5
Refer to Sectlon G
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Refer to Sect~on FT
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Loose tlmlng belt
Replace or repair B1-45
Malfunct~on of timing belt tensloner
1
Replace
B1-8
' Tappet nolse may occur ~f the englne has set at Idle for an exhausted per~od The nolse should stop after the englne has reached normal operat~ng temperature
(HLA troubleshoot~ng Refer to page 81 6)
MB1048 D2 6BUOB1-002