Decarbonize Cylinder Head & Pistons - Lotus TURBO ESPRIT Service Manual

SECTION EA
Page
27
7. Close coolant drain tap on radiator and refill the cooling system, with a
inhibitor/anti freeze solution.
8. Check engine oil, start engine and allow to reach its normal operating
temperature. Adjust slow running speed and mixture, and ignition
timing. Check for o i l and coolant leaks while engine is running. Thoroughly
check fuel system
for
leaks and security of joints.
EA.11.
-
VALVES
To Remove
1
.
Remove the cylinder head (Section
€4.1 0.)
2.
Using a suitable valve spring compressor, compress the valve springs and
extract the split collets. Release the valve spring compressor, and remove
the valve spring retainer, valve springs and spring seat from each valve.
Remove the valve
.
3 .
Repeat the process for the remaining valves. Label each valve with its
I
oca tion.
To Replace
1
.
Check the valve seats for condition, re-cutting as necessary, and check
condition of valve guides. Grind i n all valves.
2.
Lightly lubricate the stem of the valve and insert into i t s guide.
3 .
Fit spring seat, valve springs, spring retainer. Place the valve spring
compressor i n position and compress the valve springs sufficiently to f i t
the split collets. Release the valve spring compressor.
4.
Repeat the process for the remaining valves.
5 .
Replace the cylinder head followed by the cams haft housings. Re-check the
valve clearances
.
6.
Replace ancillaries
.
EA.12.
-
DECARBONISE CYLINDER HEAD
& PISTONS
TO
Remove
1
.
Remove cylinder head t o a clean covered bench
.
(Section
EA .I 0.)
2.
Remove the valves (Section
EA.11 .)