Page 807 - 2006 HARLEY FLSTCI SERVICE MANUAL

Disconnect spark plug wires, clean around plug base
3.11 TEST RESULTS Compression low on first stroke, tends to build up on the following strokes, but does not reach normal. Improves con- siderably when oil is added to cylinder. Compression low on first stroke, does not build up much on following strokes. Does not improve considerably with the addition of oil. Check for correct push Same reaction as valve trouble.

and remove plugs. Connect compression tester to front cylinder per manu- facturer’s instructions. Make sure transmission is in neutral. With throttle plate in wide open position, crank engine continuously through 5 to 7 full compression strokes. Note gauge readings at the end of the first and last com- pression strokes. Record test results. Repeat steps 2 through 4 on rear cylinder. If the final readings are 90 PSI (620 kN/m 2 ) or more, and if the final readings do not indicate more than a 10% vari- ance between cylinders, compression is considered nor- mal. If compression does not meet specifications, see Table 3-1. Inject approximately 1/2

1. 2. 3. 4. 5. 6. 7. Ring trouble Valve trouble

3.22 PUSH RODS, under
To diagnose and correct noisy hydraulic lifters and valve train
DIAGNOSING VALVE TRAIN NOISE

TROUBLESHOOTING
components, use the following procedures: With engine and oil at normal operating temperature, check oil pressure at 2000 RPM. If oil pressure is above 50 PSI (345 kN/m 2 ) or below 5 PSI (34 kN/m 2 ), inspect oil pump, crankcase passages, and oil hoses for restric- tions or blockage. Repair or replace parts as necessary. If oil is reaching the hydraulic lifters, remove and inspect. LIFTER INSPECTION LIFTERS AND COVERS. Clean lifter bore of all foreign material. Replace hydraulic lifter if required. Examine push rod, lifter and lifter block for proper fit and any signs of unusual wear. Replace parts as necessary. Visually inspect cams

HOME 1. 2. See 3. 4. 5. 6. 7. shifting. 8. compression gauge. 3-20