1977 Volvo 262 264 265
Possible cause
Correction
Defective wires.
Check wire terminals at: fuel pump, fuse No. 7, coil,
distributor, ignition switch and relays and air flow sensor.
Intake system leaking.
Check hose connections to cold start valve and auxiliary air
valve.
Low idle speed.
Adjust.*
Exhaust Gas Recirculation Valve seizing. Replace valve.* (Engine will stall at idle.)
Fuel filter clogged.
Clean fuel tank filter and replace line fuel filter.
pg. 78 Service diagnosis
Condition: Low top speed, loss of power
Possible cause
Correction
Air filter clogged.
Check air filter.*
Throttle misadjusted.
Check that the throttle touches the high speed stop when the
accelerator is fully depressed.*
Incorrect timing or dwell
angle.
Check and adjust.*
Fuel filter clogged.
Clean fuel tank filter and replace fuel line filter.*
Condition: Excessive fuel consumption
Possible cause
Correction
Fuel lines leaking.
Check tightness.
Spark plugs worn
Replace plugs.
Incorrect timing.
Check/adjust.*
Air filter clogged.
Check/replace.*
Control pressure
incorrect.
Check/replace control pressure regulator.*
Cold start injector
leaking.
Replace injector.*
(A leaking cold start injector also causes uneven idle and hard
starting.)
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