Nissan Patrol, Ford Maverick
1988-1997 of release
Repair and car operation
Nissan Patrol and Ford Maverik
+ Cars of the Nissan Patrol and Ford Maverick series
- Diagnostics of malfunctions
Problem diagnostics at engine start in road conditions
Diagnostics of the general mechanical engine failures
Diagnostics of malfunctions of system of cooling
Diagnostics of malfunctions of systems of heating and air conditioning
Diagnostics of malfunctions of a power supply system
Diagnostics of malfunctions of coupling
Diagnostics of malfunctions of manual transmission
Diagnostics of malfunctions of automatic transmission
Diagnostics of malfunctions of the forward bridge
Diagnostics of malfunctions of the back bridge
Diagnostics of malfunctions of a steering
Diagnostics of malfunctions of a forward suspension bracket
Diagnostics of malfunctions of a back suspension bracket
Diagnostics of malfunctions of brake system
Diagnostics of malfunctions of systems of electric equipment of the engine
Diagnostics of malfunctions of onboard electric equipment
Diagnostics of a condition of tires and their protectors
+ Settings and routine maintenance
+ Systems of cooling, heating and air conditioning
+ the Power supply system and production of the fulfilled gases
+ Systems of decrease in toxicity of the fulfilled gases
+ Systems of electric equipment of the engine
+ Brake system
+ Forward and back bridges, running gear and steering
+ Onboard electric equipment
Diagnostics of the general mechanical engine failures
There are ignition admissions at operation of the engine on single turns
Leakages of air through laying of the inlet pipeline take place. Check, having missed the mark with oil or a vlagopoglotitel pipeline joints at the working engine and listen to the hissing indicating a source of leak.
Adjustment of valves (engines of 4.2 l) is broken. Check, in case of need make correction of gaps.
Integrity of laying of a head of cylinders is broken. Make check of kompressionny pressure in cylinders, in case of need replace laying.
Takes place прогар plates of valves or their saddles in a head of cylinders. Check kompressionny pressure, in case of need make major maintenance of a head.
Piston rings are broken or worn-out. Check kompressionny pressure, in case of need replace rings.
Klapanny springs weakened or are worn-out. Uncover heads of cylinders and check a condition of klapanny springs.
The Klapanny mechanism at work publishes unusual noise
Adjustment of gaps of valves (engines of 4.2 l) is broken. Check, execute adjustment.
Klapanny springs weakened or are broken. Uncover heads of cylinders and check a condition of klapanny springs. In case of need make replacement.
Assemblies of yokes are worn-out or damaged. Replace defective components.
Hydraulic pushers (engines of 3.0 l) are faulty. Replace defective pushers.
Directing plugs of valves are worn-out. Execute major maintenance of a head of cylinders.
Working ledges of cams are worn-out. Check a camshaft condition, in case of need make replacement.
The noise published by bearings of the bottom heads of rods take place
Supply of oil is broken. Check oil level in the pallet of a case and a condition of the oil pump and the reduktsionny valve. Replace the oil filter.
The gap in bearings is excessive. Replace loose leaves, check a condition of shatunny necks of a cranked shaft, in case of need execute their pro-point.
Too liquid oil is filled, or there was its razzhizheniye gasoline or water. Replace impellent oil, the gulf is fresher than a demanded grade. Try to reveal and eliminate the razzhizheniye reason.
Pressure of oil fell. Check serviceability of the reduktsionny valve, a spring condition. Also check serviceability of functioning of the perepuskny valve of the oil filter.
There was a shift of shatunny bearings. Correct rods, in case of need make replacement of loose leaves.
The noise published by radical bearings (obvious) take place
Weakened flywheel fastening. Tighten bolts with demanded effort.
Pressure of oil fell. Check gaps in radical bearings. Check a condition of the oil pump and the reduktsionny valve. In case of need make regenerative repair of the pump.
It is excessive axial люфт a cranked shaft. Replace radical bearings.
There was an ovality of necks of a cranked shaft. Pierce necks and replace bearings (on the repair size with belittling).
Supply of oil is broken. Add oil in a case, having finished its level to demanded value.
The consumption of impellent oil is excessive
Leakages of oil take place. Check a condition of laying and epiploons. In case of need make replacement.
Maslootrazhatelny caps of cores of valves are damaged or worn-out. Replace defective caps.
The gap of landing of cores of valves in directing plugs is excessive. Replace directing and/or caps.
Piston rings are worn-out or broken. Replace rings on all pistons. Piston rings are too hardly planted or jammed in the flutes. Replace rings, clean flutes.
Cylinders, pistons and piston rings are excessively worn-out. Pierce and/or отхонингуйте cylinders, replace pistons and/or piston rings.
Kompressionny rings are incorrectly established, maslosjemny rings are broken or jammed. Make replacement.
Pressure of impellent oil fell
Oil level fell in the case pallet. Check, in case of need add.
Too liquid oil is filled, or there was its razzhizheniye. Replace oil and eliminate the razzhizheniye reason if that took place.
The reduktsionny valve is jammed, or its spring is broken. Eliminate the reason of jamming or replace the broken klapanny spring.
The gap in bearings is excessive. Replace loose leaves, or (in case of need) pierce necks of a cranked shaft.
Wear of components of the oil pump is excessive. Make regenerative repair, or replace the pump.
The engine is not turned
The starter is jammed. Remove a starter. Check a condition and (in case of need) replace the damaged drive and/or a gear wreath of a flywheel.
The engine клинит with a simultaneous overheat. Remove the engine and disassemble it. Check a condition of internal components, make necessary replacements.
In cylinders moisture at the expense of a water podsasyvaniye got to the highway of a fence of air (for example during a crossing through the river).Выверните spark plugs and dry cylinders.
Water gets to cylinders through laying of a head of cylinders or a crack in a head/block body. Remove a head of cylinders. If cooling liquid filters through laying, check planeness of interfaced surfaces of a head and the block. In case of need make a pro-point. At detection of cracks it is necessary to replace the head/block.
Damage of a cranked shaft or components of shatunno-piston groups takes place. Remove and disassemble the engine. Examine components, make necessary repair/replacement.
Integrity of a plate of the valve owing to an overheat or fatigue deformation is broken. Remove a head of cylinders and check a condition of its components. Make necessary regenerative repair or replacements.
Turn out candles and disconnect ignition system as it is described in the Section devoted to check of kompressionny pressure (setup of the engine) in Head of Control and routine maintenance.
Turn the engine manually, вытолкнув from it there is as much as possible water.
Then turn the engine a starter - try not to bend over the engine block as water can be pushed out through candle openings with a decent pressure. Check impellent oil, the distributor, the carburetor, an air purifier, the fuel filter and a fuel tank on existence of traces of presence of moisture in them. If moisture is not found, dry and screw to the place of a spark plug and start the engine.
When jamming engine as a result of an overheat owing to falling of level of cooling liquid bearings, pistons, etc. components unequivocally fail. Though sometimes the engine also manages to be started successfully after an ostuzheniye and replacement of oil and cooling liquid, such deviations as the raised consumption of oil, oil pressure drop, increases level of noise at operation of the engine, etc., depending on degree and nature of damages usually are soon shown.
At infiltration of cooling liquid in cylinders through head laying, or if kompressionny pressure in two next cylinders low, is extremely important to check carefully interfaced surfaces of the block and a head of cylinders on planeness violation. Through laying or crack thinnesses in the head/block the quantity of water can filter into cylinders sufficient for an engine failure from a provorachivaniye. Usually such situation is accompanied by difficulties at start, ignition admissions, a steam-out from an exhaust pipe, and also falling of level of cooling liquid.
Leakage of gases in system of cooling can be revealed by a way of removal of a cover of a radiator and supervision of bubbles in the top tank of a radiator at the engine working with turns of fast idling or without removal of a cover of a radiator on excessive inflow from a broad tank.