Starting problem my nissan altima2003 had overheating problem.the gasket was change and since then one of the sparking plugs shocks once. and stop even when cranking continue. i diagonised the car .it gave no problem result . please i need your help
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the only way is to have a head gasket test done on the car. you can pull the plugs to see if there is coolant in the cylinders or if the spark plug tip is white as this is an indication of a possible head gasket. has your car been overheating. it could be a thermostat and the engine got too hot and stopped. it could have a coolant leak somewhere as well and the coolant ran out. just some things to check.
Is there leaves,feathers & such around the condensor & radiator, you have to blow & hose that out once a year Do you change spark plugs every 3 years? Do you have cylinder misifires? Do you change your air filter every 2 or 3 years? Did you change front oxygen sensors, on all your vehicles at 100,000 miles Did you change Power Steering,Transmission & Coolant every 3 years? Look at scan tool data? Ask a Repair Shop to figure it out? Any overheating you stop using it Do you have a timing belt that is off & should have been replaced before 95,000 I it actually overheating or just the gauge reading is off?
You need to strip the engine down and check the top of the block (deck) for cracks and have it resurfaced, Do the same for the cylinder heads, check them for vcracks and have them resurfaced. Use felpro gaskets.
Check for spark by grounding a plug on the engine somewhere and turn it over for a couple seconds. If spark, the, problem is fuel delivery or compression..
unfortunately these engines are known for this condition and for head gasket failure.with engine cold pressurize cooling system with spark plugs removed.look down into holes with flashlight after about ten minutes.....im betting youll see a puddle of coolant on piston...usually its cyl# 2 or 3.i cant think of any other possibility for system repeatedly airlocking other than a head gasket.good news they are probably one of the easier ones to replace.
Check vacuum leaks , by spraying carburator cleaner around intake manifold gasket and vacuum hoses connections . See if engine picks up the idle speed while you doing it , and if it does , locate leak and fix it. Most common , intake manifold gasket brakes.
Sound like an air / vacuum leak to me.
Re-check for an air leak on #2 cylinder inlet manifold.
Use a propane torch (unlit, of course) to flood propane gas around inlet manifold/head flange & gasket area.
If there is any change in idle speed during this test you have a vacuum leak.
The block sealer you used may have been too thick or too big. A leaking head gasket or cracked head is a rare cause for a cylinder misfire. Tryin putting a manufacture gasket back on and change the spark plugs. If that doesnt work, try checking your valves or pistons-- maybe you have worn valve guides or your cylinder wall is worn out.
Sounds like misfire. Change spark plugs, wires, cap, rotor , fuel and air filters. Check for oil in spark plug holes. if oil found change valve cover gasket spark plug orings. they can leak oil into spark plug holes and cause misfire.
was the timing belt changed, since it overheated the cam may have gotten tight and the belt might have jumped 2-3 teeth and you still would have a spark and fuel pressure.
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