PART NUMBER | TOOL NAME |
HD-35457 | BLACK LIGHT LEAK DETECTOR |
Oil does not return to oil tank
1. Oil tank empty.
2. Oil pump gerotors damaged. The oil pump is not functioning.
3. Restricted oil hoses or fittings.
4. Restricted oil filter.
Engine uses too much oil or smokes excessively
1. Piston rings badly worn or damaged.
2. Valve guide(s) or seal(s) worn or damaged.
3. Restricted oil filter.
4. Oil tank overfilled.
5. Restricted oil return hose to tank.
6. Restricted breather operation.
7. Plugged crankcase scavenge port.
8. Oil diluted with gasoline.
Engine leaks oil from cases, pushrods, hoses, etc.
1. Loose parts.
2. Imperfect seal at gaskets, pushrod cover, washers, etc.
Note. To aid locating leaks, use BLACK LIGHT LEAK DETECTOR (Part No. HD-35457).
3. Restricted oil return hose to tank.
4. Restricted breather passage(s) to air cleaner.
5. Restricted oil filter.
6. Oil tank overfilled.
7. Porosity.
Low oil pressure
1. Oil tank underfilled.
2. Faulty low oil pressure switch.
3. Worn oil pump gerotor(s).
4. Worn pinion shaft drive gear.
5. Restricted feed hose from oil tank.
6. Restricted high-pressure feed hose to oil filter housing.
7. Oil diluted with gasoline.
8. Oil bypass plunger stuck open.
High oil pressure
1. Oil tank overfilled.
2. Restricted oil tank return hose.
3. Oil bypass plunger stuck closed.