Ignition faults

timing marks on the timing gear wheels or the timing chain as may be the case.

1. Compression leak due to faulty closing of valves. Check valve clearances. See also under (7) or leakage past worn piston rings or pistons. Cylinder head gasket blown.
2. Entry of air at inlet manifold, due to split manifold or damaged gasket. Correct as necessary.
3. Restriction in exhaust system, due to damaged exhaust pipes, dirt in end of exhaust pipe(s), kinked pipe(s), or collapsed silencer. Repair as necessary.
4. Worn valves or valve seats, no longer closing the valves properly. Top overhaul of engine is asked for.
5. Sticking valves due to excessive carbon deposits or weak valve springs. Top overhaul is asked for.
6. Cylinder head gasket blown. Replace gasket and check block and head surfaces for distortion.
7. Camshaft worn, not opening or closing one of the valves properly, preventing proper combustion. Check and if necessary fit new camshaft.
8. Incorrect valve (tappet) clearance. Re-adjust.
9. Cylinder bores, pistons or piston rings worn. Overhaul is the only cure. Fault may be corrected for a while by adding "Piston Seal Liquid" into the cylinders, but will re-develop.
10. Worn valve guides and/or valve stems. Top overhaul is asked for.
11. Damaged valve stem seals (if fitted). Top overhaul is asked for.
12. Leaking crankshaft oil seal, worn piston rings or pistons, worn cylinders. Correct as necessary.
13. Loose spark plugs, gases escaping past threads, or plug sealing washer damaged. Correct.
14. Cracked cylinder or cylinder block. Dismantle, investigate and replace block or cylinder barrel as necessary and applicable.
15. Broken, weak or collapsed valve spring(s). Top overhaul is asked for.

IGNITION FAULTS

Engine does not start: 1 to 3, 5, 6, 8 to 14, 19

Engine misfires: 2 to 7, 9 to 12, 14, 19

One cylinder not working: 2 to 7, 9 to 14

Engine fails to rev, misfires on acceleration: 2 to 7, 9 to 12, 14, 19

Incorrect idling speed: 1 to 3, 5 to 15, 17, 19

Lack of power: 2 to 12, 14, 15, 17, 19

Poor acceleration: As for "Lack of Power"

Lack of max. speed: As for "Lack of Power"

Excessive fuel consumption: As for "Lack of Power"