Question about 1992 Mazda B-Series

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Antifreeeze coolant entering cyclinder ,remove spark plug ,disable coil turn over eject coolant from cylinder replace plug fire up ,runs good drove for 1 hr. stopped then started it right up idled well.next day would not turn over ,remove plug of offending cylinder ejected coolant returned plug fired right up ran perfect?

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You probably have a bad head gasket, leaking coolant into the cylinder. Running it this way will destroy your engine.

Posted on Oct 14, 2010

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Mis fire on cyclinder one and overheating for an 2005 Chevrolet equinox


You are describing the classic symptoms of a blown head gasket from the cylinder into the water jacket. This causes loss of compression in the affected cylinder and also injects hot gases into the cooling jacket resulting in overpressure and overheating of the coolant. Perform a compression check of all cylinders and if any are appreciably lower than the others, you are looking at some major engine work.

Aug 02, 2014 | 2006 Chevrolet Equinox

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2 cyclinders are working out of 4


You mean without taking it to a shop for repairs, or at least some diagnosing? Check for spark on all four cylinders. If two do not have a spark, the problem is in your ignition system. Possibly the ignition coil for the two not working.
If all four spark plug wires do have spark, it could be a fueling problem to the cylinders not firing, or it could be an internal mechanical problem in the engine. Then you would need professional help.
Google or watch a vid on you-tube for how to check for spark, if you are not sure.

Jan 25, 2014 | 1995 Volkswagen Passat

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99 mpv missfires,splutters.wont idle & has no power. when MAF is disconnected runs a lot better. I replaced the Maf but still does the same.The problem started suddenly,drove to work ok but when i


replace fuel filter, clean fuel injectors.could have bad fuel, do a code scan before buying new parts.faulty egr valve or faulty engine coolant temperature sensor cause engine run poorly.replace spark plugs and wires because if spark plug wires is bad or spark plug and ignition coil is bad that will cause rough idling misfiring and stalling you have dead cylinder not firing properly..

Oct 01, 2012 | Cars & Trucks

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98 passat # 2 missfire help


If your getting a P0302 ( cylinder #2 misfire detected), the first thing to check is the spark plug. If it's new then the next thing to check is the plug wire. If it has individual coils, then swap it out with another one and see if the misfire moves too. If so then the coil is faulty.

May 07, 2011 | 1998 Volkswagen Passat

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The code is # 1 cylinder miss fire. i replaced plugs and wirers still running bad but no code yet


check for spark at the coil, if its weak, or no spark, replace the coil pack.

Dec 03, 2010 | 2001 Ford Windstar

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Engine light keeps comeing on mecanic change o2 senser worked for half hour came back on cods keep saying its miss fireing have had this problem for a month know


Start Small work to Big = Saved Money!
The Code(s) should be telling the specific cylinder(s) that are misfiring. Do you know waht the code is?
Target those cylinders 1st before testing the unaffected cylinders.
The following should isolate the problem(s).
1. Spark plugs - take out-reconnect back to wires and test spark plugs for getting sparks. If none: Don't replace them yet. GO TO 2. If the spark plugs are worn, dirty them replace them.
2. Remove spark plugs form end of ignition wires and test for spark from the wire. If none: Don't replace them yet. GO TO 3.
3. Remove the wires from the coil connection and test the coil for spark for each cylinder. If none: Don't replace it yet.
4. Test each spark plug and wires this way.
5. Coil Packs normally provide fire for 2-cylinders at the same time. The two are paired across from one another.
6. Test the coil for fire, amount of fire and if there is both cyclinders firing.
Misfire and the O2 Sensor got replaced??
Good Luck and get back with me if you need additional help or if this solved the problem.

Nov 20, 2009 | 2004 Dodge Intrepid

1 Answer

Car started running bad with no power.So put fuel injection cleaner in and car started running better.So drove it about 20 miles and car went dead going about 30mph and would not crank back up, what is...


If this is a 4 cylinder, then its most likely the coil. Take out a spark plug and crank the engine to see if you have a good spark. If you don't have a spark, in order, replace the distributor cap and rotor, and replace the coil. If your ignition wires are old, replace them as well.

If its a 6 cylinder car, there is a separate coil for each cylinder, so your problem is more difficult to diagnose. In that case, if no cylinders are firing it may be the ignition computer or the ignition switch.

Jun 28, 2009 | 1996 Toyota Camry

2 Answers

02 camry firing on only 2 cyclinders


If 2 and 4 won't fire no matter what coil is there, then you likely have problems with either spark plugs or spark wires. If rotating the coil packs doesn't make a difference, it has to be something that's always "with" those cylinders, which would be plugs and/or wires. A new set of plugs is very inexpensive, and isn't a bad idea, especially if it's been awhile since they were changed. I'd try them, see if it works, and if it doesn't, try swapping spark wires between cylinders (at both ends - undo the wires from the coil AND plug and move them to another cylinder and see if the fault follows).

Sep 27, 2008 | 2002 Toyota Camry

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1990 Subaru Legacy shorted out the ignition coil. I replaced it and in less than 1 mile,it shorted out the new one.


Subaru engines (including Legacy and engines of many other automobiles, GM, etc.) have returned to so-called wasted spark ignition systems since advent of the electronic distributor-less ignition (having been used historically in early engines with magneto ignitions). With this approach, the ignition systems are less expensive and usually quite reliable. At the same time, however, a shorted spark plug (cracked or carbon clogged, etc.) (or bad ignition spark plug wire) grounds both the ignition spark and the false spark being used. This means that it also grounds the corresponding respective ignition spark of the other 180 degree out of phase cylinder (that uses the same the same coil because the spark current is connected to the spark plugs of two cylinders). Since such a defect allows more current to flow in the spark coil to two plugs when the resistance of the spark plug gap disappears due to a cracked plug, etc, it seems likely to hasten coil burn out if the spark plug/plug wire defect is not corrected before installing the new spark coil.

To explain further, wasted spark means that when a cylinder is ready to fire, it gets a spark to its spark plug while part of the spark (from the same coil and current) as a sort of copy is also sent to another cyclinder at the same time but when the piston in that cylinder is exhausting its ignited gases 180 degrees out of phase from when its spark is needed. When the second cylinder is ready to fire and receives its "spark, the first cyclinder the also receivesa "wasted" spark "copy" of the one needed by the second cylinder. Economy is achieved in manufacture because otherwise electronics would have to turn on and off four different spark coils to distribute four different sparks as needed to the four cylinders. With wasted sparks (which are cheap), because the spark current of one coil is connected (internally in the ignition coil unit) to two cylinders that are in the same position but 180 degrees out of phase in firing, the system can turn on and off two spark coils twice as fast with half the electronics and fire two cylinders that are 180 degrees out of phase. A four cylinder engine thus uses only two coils, a six cylinder engine, three coils, etc., in a wasted spark system.

Jul 27, 2008 | Subaru Legacy Cars & Trucks

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