Question about 1998 Kia Sephia

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Water inside spark plugs and no comppresion power

Theres water inside the spark plugs the wont stay on theres a knocking sound inside the engine comparment?

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You need to take the cylinder head off to change the head gasket, check how straight the cylinderhead is and see for cracks in the head. Knocking can imply that the water has blocked the piston and the connecting rod has been bent--> see the height of all pistons.

Posted on Apr 10, 2014

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Have a Isuzu 4hg1, assembled the engine and started it. I run it for two kilometers n hear the knocking sound n believe its a fuel knock. How can I fix the abnormal sound?

at idle only, when,does it knock.... wow.
no car stated, sure a huge truck,, 4.57 Liters
what truck? my guess NPR huge.
is the TURBU -T 4HG1-T?????
Applications include the 2000 Isuzu NPR350A
what year.?
what country?
we know its a diesel"H"
but old ones all knock, (detonate)with mech,injectors, (for sure at idle !!!)

on a new trucks not(with common rail,? direct injection and smart EFI controls)knock ends.

see the old engine
has 9degree injector pump timing
do that? got that?
the new NPR trucks sell this same engine
with Direct injections,knock?
,my guess. a leaking injector DID. if new truck>?
direct injected, is it?
or EFI brain stuck on limphome ,mode ,scan it?

see why not staying year, is IMPOSSIBLE:
the engines in 2000 are NOT same as now,
totally different efi fuel systems.1024092b-cf5d-4452-8e68-40060a48c7e5.jpg

Feb 17, 2017 | Isuzu Cars & Trucks

1 Answer

What would a knocking machine gun sound be under hood. I just started it and somewhere under the hood is a LOUD Knocking like a Machine Gun sound.

Is it metalling sound ? if that's the case then don't drive it .. you might be having issues with connecting rod or the bearings in the both cases engine will seize. Consult a auto technician, but you wont have engine light on due to this.

If it is knocking due to misfire (which is mostly the case as the engine light is also on) .... than find which cylinder have the issue then clean or replace the spark plug. If you can get a scanner to read the car computer it will solve the issue in a blink. Otherwise start the engine ... open the hood .pull out spark plug connector one by one and notice the change in sound... the one that is bad will have no effect on the sound.

Sep 06, 2015 | 2004 Dodge Durango

1 Answer

Jeep troubleshooting free

You need to get some kind of scan tool that can read the data ouput of the efi system while driving on the hills that give you problems.The efi system probably has a spark knock sensor.Reading the data off of the sensor while driving will tell if the sensor is telling the engine ecm to adjust itself for low quality fuel.The engine ecm is programmed to dial back power if it detects spark knock.Running poor quality fuel will cost you many dollars more in the long run.A lean running condition (low fuel pressure,partialy plugged injectors,plugged fuel filter) will cause spark knock under load.Carbon deposits on the pistons(internal engine problems) will cause spark knock.The knock is caused by fuel igniting before the spark plug ignites it-The piston is trying to go back wards.Sometimes there will be a factory reflash for the ecm if many of the engines had the same problem.Try reading on some Jeep forums online.This is a problem for a good auto tech-not your average flat rate parts swaper.If the jeep has had many miles since some maintenance(filters & spark plugs) you might start there before laying out $ for diag.

Aug 29, 2014 | 2007 Jeep Commander 4.7

1 Answer

Toyota solara engine knocking and car cutting off

Meloe77, there's a high possibility you have a mechanical failure inside the engie causing the knocking sound. (Check the oil?)
The reason for shutting off is because the knock sensor can hear it, and the powertrain control module (PCM, herefore) is trying to detune the engine to eliminate the sound, (as if it were caused by bad gasoline.) The fact that there is a mechanical knocking sound, means that the sound cannot be eliminated by detuning of fuel or spark mapping, therefore it starves for fuel and/or spark causing the engine to stop running.
My recommendation: Have the vehicle TOWED to a reputable mechanic and ask him if its possible that I'm right.

Jan 22, 2013 | 1999 Toyota Camry Solara

2 Answers

What part of the engine knocks when your knock sensor is bad on a 11995 cutlass supreme sl

Hello: The Knock Sensors purpose is to detect pre-ignition, when the computer receives a knock signal it re tarts the timing to prevent the pre-ignition. Any mechanical related knock will activate the knock sensor signal. If the knock sensor is bad it WILL NOT cause the engine to knock.......

Sep 15, 2011 | 1994 Oldsmobile Cutlass

1 Answer

How do I replace a knock sensor for a 1992 toyota camry v6 le

First, I would like to mention that most knock sensor codes are not caused by the knock sensors, but a mechanical problem with the engine. The knock sensors cannot differentiate between noises caused by mechanical problems like a bad pulley bearing, bad motor mount, noisy alternator bearings, etc. and spark knock. knock sensor codes are set when the computer has retarded the timing as far as possible to compensate for ignition ping (Spark Knock) and the noise still exists.

With that said, here are the instructions.

Remove the Intake Chamber assembly.
Disconnect Injector connectors.
Disconnect the heater hose from the Intake Manifold.
Remove the 9 bolts. 2 nuts, 2 plate washers and Intake Manifold assembly.
Remove right hand engine mounting stay and water outlet.
Disconnect the following hoses and connectors:
Radiator inlet hose.
Engine coolant reservoir hose.
Engine Coolant Temperature Sensor connector.
Engine Coolant Temperature Switch connector.
Ground strap connector.

Remove the 3 bolts and right hand mounting stay.
Remove the wire band.
Disconnect the water bypass hose from the inlet housing.
Remove the 2 bolts, 2 nuts, 2 plate washers and water outlet.
Remove the 2 gaskets.
Disconnect the Knock Sensor connectors.
Remove the Knock Sensors.

Dec 02, 2010 | 1992 Toyota Camry V6

1 Answer

After driving through water engine makes loud knocking sound, i've change my oil,checked my coils, spark plugs,,

water and engines dont mix at all. if you get water in your air intake and ends up in your engine not good.

the engine knock is a sure sign of a blown motor.

Do Not Drive or Start to avoid further damage!!!!!!
get it towed to a engine re-builder

Apr 08, 2010 | 1999 Nissan Maxima

2 Answers

I went through a huge puddel and the car stoped and the engine wont spin

Sounds like there is water in the engine. First check the oil level, if it is over full you have water in the crankcase and will need to drain the water form the oil pan. Next you will need to remove all of the spark plugs because it sounds like it is hydrolocked. with the spark plugs removed spin the motor over with the starter and after a bit of that, most of the water should have cleared form the cylinders. once you get it running, go over all of your fluids looking for anything overfull, indicating water intrusion and change anything suspect.

Sep 27, 2009 | 2003 Chrysler PT Cruiser

1 Answer

I drove through some high water and flooded my engine. Trying to let the car dry out and be able to get it running without taking it to a shop. Any suggestions on what to do?

Depending on how much water you got into the engine you could have irreversible internal component damage. I would start by removing all of the spark plugs and then try to crank the motor. If you are hearing knocking noises at this point it is barely worth putting the spark plugs back in the motor as it is blown. If you hear no knocking while clearing the water out of the cylinders reinstall the spark plugs and try to start it momentarily (DO NOT LET IT STAY RUNNING). If you still have no engine noise I would proceed to a oil change. At any point if it is knocking or refusing to turn over normally with the plugs out you can count on a bent connecting rod or bent crankshaft. Hope this was of help to you.

Jun 05, 2009 | 2002 Ford Taurus

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