Cylinder Head Components Inspection, Cleaning And Repair; Clean Top Of Pistons And Top Of Block; Remove Gasket Material; Clean Valve Guide Bushings - Toyota 3VZ–FE Troubleshooting Manual

ENGINE TROUBLESHOOTING
CYLINDER HEAD COMPONENTS
INSPECTION, CLEANING AND REPAIR
1.

CLEAN TOP OF PISTONS AND TOP OF BLOCK

(a) Turn the crankshaft and bring each piston to top dead center
(TDC). Using a gasket scraper, remove all the carbon from
the piston top surfaces.
(b) Using a gasket scraper, remove all the gasket material from
the cylinder block surface.
(c) Using compressed air, blow carbon and oil from the bolt
holes.
CAUTION: Protect your eyes when using high–pressure
compressed air.
2.

REMOVE GASKET MATERIAL

Using a gasket scraper, remove all the gasket material from
the cylinder block contact surface.
NOTICE: Be careful not to scratch the surfaces.
3. CLEAN COMBUSTION CHAMBERS
Using a wire brush, remove all the carbon from the combus-
tion chambers.
NOTICE: Be careful not to scratch the cylinder block con-
tact surface.
4.

CLEAN VALVE GUIDE BUSHINGS

Using a valve guide bushing brush and solvent, clean all the
guide bushings.
5. CLEAN CYLINDER HEADS
Using a soft brush and solvent, thoroughly clean the cylinder
heads.
– ENGINE MECHANICAL
EG–61
EG0F6–01