Volvo DL 1981 Owner Manual

pg. 85 Service diagnosis, Page 107 of 127 pages for Volvo DL 1981 Owner Manual. The Owner Manual is applied into the following products: GL 1981, GT 1981

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1981 Volvo DL, GL and GLT * Should be checked by a Volvo dealer. pg. 85 Service diagnosis Condition: Erratic idle (misfiring) Possible cause Correction Intake system leaking. Check vacuum hose connections at manifold and auxiliary air valve. Spark plugs, high tension leads or distributor cap worn (defective) Clean distributor cap and leads, check the cap for cracks. Replace defective or worn parts. Worn spark plugs. Remove. Clean or replace spark plugs. Cold start injector leaking . Test the injector function.* Uneven compression. Test compression.* Condition: Engine stalls at irregular intervals Possible cause Correction Defective wires. Check wire terminals at: fuel pump, fuse No. 5 and 7, coil, distributor, ignition switch and relays. Intake system leaking. Check vacuum hose connections at manifold and auxiliary air valve. Low idle speed. Adjust.* Fuel filter clogged. Clean fuel tank filter and replace line fuel filter. * Should be checked by a Volvo dealer. pg. 86 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.* file:///K|/ownersdocs/1981/81_dl_gl_glt/81DLGLGLT_03c.htm (9 of 12)12/22/2006 10:28:44 PM

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