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 TROUBLESHOOTING
TESTING AND ADJUSTING
17. TOO MUCH VALVE LASH (Cont.)
Cause:
Correction:
Worn Cams on Camshaft
Check valve clearance. Check for free movement of
valves or bent valve stems. Install a new camshaft.
Install new valve lifters. Make adjustment of valve
clearance according to Subject, VALVE CLEARANCE.
18. VALVE ROTOCOIL OR SPRING LOCK IS FREE
Cause:
Correction:
Broken Locks
Broken locks can cause the valve to slide into the
cylinder. This will cause much damage.
Broken Valve Spring(s)
Install new valve spring(s)
Broken Valve
Replace valve and other damaged parts.
19. OIL AT THE EXHAUST
Cause:
Correction:
Too Much Oil in the Valve Compartment
Be sure that the dowel is installed in the left bolt hole of
the rocker shaft.
Worn Valve Guides
Reconditioning of the cylinder head is needed.
Worn Piston Rings
Inspect and install new parts as needed.
20. LITTLE OR NO VALVE CLEARANCE
Cause:
Correction:
Worn Valve Seat or Face of Valve
Reconditioning of cylinder head is needed.
Make
adjustment of valve clearance according to the Subject,
VALVE CLEARANCE.
21. ENGINE HAS EARLY WEAR
Cause:
Correction:
Dirt in Lubrication Oil
Remove dirty lubrication oil. Install new oil filters. Put
clean oil in the engine. Check oil filter bypass valve for a
weak or broken spring.
Air Inlet Leaks
Inspect all gaskets and connections.
Make repairs if
leaks are found.
Fuel Leakage Into Lubrication Oil
This will cause high fuel consumption and low engine oil
pressure. Make repairs if leaks are found. Install new
parts where needed.
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