Mash Seventy - Page 198

Chapter 8 Information service Section 1Troubleshooting
8-4
ENGINE
Complaint Symptom and possible causes Remedy
Engine will not
startorishard
tostart.
Compression too low
1.
Tappetclearanceoutofadjustment.
2.
Wornvalveguidesorpoorseatingofvalves.
3.
Mistimedvalves.
4.
Excessively worn pistonrings.
5.
Worn-down cylinderbore.
6.
Startermotorcrankstooslowly.
7.
Poorseatingofsparkplugs.
Plug not sparking
1.
Sparkplugs defect
2.
Fouled sparkplugs.
3.
Wet sparkplugs.
4.
Defective ignitioncoils.
5.
Openorshortinhigh-tensioncord.
6.
Defective CKP.
7.
DefectiveECU.ECU
8. Open-circuited wiringconnections.
No fuel reaching the intake pipe
1.
Cloggedfuelfilterorfuelhose.
2.
Defective fuelpump.
3.
Defective fuelpressure regulator.
4.
Defective fuelinjector.
5.
Defective fuel pumprelay.
6.
DefectiveECU.ECU
7.
Open-circuited wiringconnections.
Incorrect fuel / air mixture
1.
Defective fuelpump.
2.
Defective fuelpressure regulator.
3.
Defective CKP.
4.
Defective IATsensor.
5.
DefectiveECU.ECU
6.
Defective CLTsensor.
7.
Defective IATsensor.
8.
Defective TPsensor.
Adjust.
Repair or replace.
Adjust.
Replace
Replace.
See electrical section.
Retighten.
Replace.
Clean.
Clean and dry.
Replace.
Replace.
Replace.
Replace.
Repair or replace.
Clean or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Check and repair.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.