Toyota Camry

1992-1997 of release

Repair and car operation

On the V6 engine 1MZ-FE disconnect electric sockets from ignition coils.

The engine should be heated-up to working temperature. Level of oil should correspond to norm, and the accumulator is completely charged. Also the help of the assistant is required.

PERFORMANCE ORDER

1. Unscrew from the engine all spark plugs. 2. Remove the central high-voltage wire from a cover of the distributor and connect it to weight. Open a power-supply circuit of the fuel pump. 3. Screw in a tip компрессометра in an opening of a spark plug of the cylinder No. 1. 4. The assistant should press against the stop a pedal of an accelerator and turn the engine a starter within several seconds. Thus it is necessary to watch indications компрессометра. Pressure will grow quickly enough in the serviceable engine. Low pressure on the first piston stroke, accompanied by gradual increasing pressure on the subsequent courses, indicates worn-out piston rings. Low pressure on the first course which does not raise further indicates leaky valves or the punched laying of a head of the block of cylinders. Deposits on a reverse side of plates of valves can promote low pressure also. Make record of the most high pressure, then repeat procedure for the remained cylinders. 5. Because of a variety компрессометров and speeds of rotation of a cranked shaft of the engine a starter data often differ at compression check. For this reason the actual pressure of compression is not specified, however the most important factor is that pressure should be identical in all cylinders. 7. Add in cylinders insignificant amount of engine oil (about 20 cm3) through an opening for spark plugs and then repeat tests. 8. If there is an increase in pressure after oil is added, indicative that piston rings are worn-out. If pressure does not increase, available leak in valves or laying to a head of the block of cylinders. Leakage of valves can be caused by the burned saddles or plates of valves or pognuty valves. 9. If two adjacent cylinders have equally low pressure, it is the most probable that laying of a head of the block of cylinders burned through between them. Emergence of cooling liquid in chambers of combustion or on щупе for measurement of level of engine oil confirms this defect. 10. If pressure in one cylinder approximately for 20 % is lower, than in other, and the engine has slightly rough mode of idling, the worn-out cam on distributive to a shaft can be the reason of it. 11. After check establish spark plugs and repeatedly connect high-voltage wires and the ignition coil. Restore a power-supply circuit of the fuel pump.