Question about Hyundai Motor 1998 Sonata

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No compression on one cylander 1998 sonata

No compression one #3 cylander, valve looks good

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What about the plug and wire for that cylinder?

Posted on Apr 02, 2014

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Posted on Jan 02, 2017

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Ford escort 1996 1.8i - running on 3 cylinders, changed leads have spark


Determine what cylinder is misfiring and do a compression test on that cylinder. Compare it with a cylinder that is not misfiring. You should have no more than 20% difference between the good cylinder and the bad cylinder. If it is low on compression, suspect a burn valve or bad valve seat... and it will require cylinder head repair. If it is good on compression, then look for a faulty injector or some other reason for the misfire on the dead cylinder.

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1996 volvo 850 missfire cylander 4


If this has the coil over the spark plug try replacing the coil. If it still has wires replace the cap, rotor and wires. Do a compression test and check for a mechanical problem like a burnt valve.

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Water in all cylanders


Sounds familiar. If the engine oil is too full, oil will splash into the spark plug openings. Then, condensation will sit on the oil shorting the plugs. Be sure not to overfill. Also, the valve cover gasket has an inside seal. Once again, oil will partly fill the spark plug hole if the gasket is bad. There is a large hole in back of the valve cover leading right to the plugs. Be careful not to rinse the engine. Gaskets seal the plugs but water can sit on the plug openings.

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1 Answer

Timing belt broke on hyundai sonata 2002 what should I do? The mechanic saya theres a ten percent chance that replacing the belt will solve the problem.


You can have your mechanic pull the valve cover. Loosen the bolts that hold the cam(s) in place and do a compression test. If one or more cylinders is low on compression the motor is junk. If the compression test is fine reinstall the cam and replace the timing belt and you should be good to go.

Jan 25, 2013 | 1996 Hyundai Sonata

2 Answers

Good evening, I have a 1998 hyudai sonata and the engine races while I am driving the car. When i put it in park the engine revs even louder. Can you tell me what it could be? Thanks


there can be a few things to look at. A vacuum leak. The idle air control valve or a problem with the transmission. is there any codes?

Jan 23, 2013 | Hyundai Motor 1998 Sonata

1 Answer

No compression or fire on a 1998 mercury tracer 2.0 single ohc


Could be bent valves. Was the motor running then stoped? Broken timeing belt? You need to remove the top timeing cover unless yu can see the camshaft through the the oil filler cap. have someone crank motor & you see if cam turns. If not = broken belt & may have bent all your valves. You can also do a cylinder leakage test to see where the compression is being lost (inlet, exhaust, rings, headgasket)

Jun 28, 2012 | 2001 Hyundai Sonata

1 Answer

Car overheated random cylindar misfire after the overheat after it heats up it bogs down and eventually dies. I have done a compresion test 2 center cylander are 10-15 psi depending also little black...


if the center 2 cylinders have only 10-15lbs pressure then you need to do a wet compression test to see if it is valves or piston rings that are bad.put about tablespoon of oil into each cylinder and turn over motor and redo the compression test.if the compression goes up you have a ring problem if it doesn`t it is a valve problem.you should check the oil to see if it has a white-caramel look to it as this indicates water in the oil.(head gasket) if the coolant level is low it can be burning coolant,you should have the cooling pressure tested just in case.it could possibly be a cracked head.if it overheats because of the low compression(sometimes happens) the motor is working twice as hard(runs hotter) as the other good cylinders have to work harder to do the same amount of work,

Apr 10, 2011 | Honda Civic Cars & Trucks

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Rear brake replacement


you need a special tool that fits in the piston face and snaps on a 3/8" rachet and you turn the piston in now,not compress them anymore

May 16, 2010 | Hyundai Motor 1998 Sonata

2 Answers

1998 oldsmobile Intrigue #3 misfire


I would check compression as well A low compression will also cause a misfire.I have seen where a valve was closing perfect for a couple of days then not so good for a couple of days and so on . so do cyl leakage test. and good luck

Mar 17, 2010 | 1998 Oldsmobile Intrigue

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