John deere 445 lawn garden tractor service repair manual

Page 58

ENGINE—FD620D, K SERIES

TROUBLESHOOTING—445 FUEL INJECTED ENGINES

TROUBLESHOOTING—445 FUEL INJECTED ENGINES

Worn or burned valves or improper clearance. Worn valve stem(s) or valve guide(s).

Engine overheats.

Coolant leakage.

Engine knocks.

Engine backfires.

Excessive oil consumption.

Excessive fuel consumption.

Engine misses at low rpm.

Engine misses at high rpm.

Engine runs erratically.

Check or Solution

Loss of power.

Problem or Symptom

Engine cranks but will not start.

See Electrical Section for fuel injection chart.

Warped cylinder head.

Broken valve spring.

Defective head gasket.

Low oil level.

Too much oil in crankcase.

Air/fuel passages clogged.

Carbon deposits in exhaust pipe/ muffler.

Carbon deposits in combustion chamber.

Lack of coolant.

Governor linkage out of adjustment.

Faulty governor spring.

Governor gear assembly binding or broken.

Air being drawn through throttle body or intake manifold flanges.

Incorrect timing gear alignment.

9/28/99

www.servicemanualall.com

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