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Whats wrong with a motor when one of the cylinders is not firing

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Could be HT lead , coil ,plug, mechanical fault Burnt/bent valve/loose insert) injector fault /blocked, wiring. Run the fault codes for a list of possible reasons for misfiring

Posted on Nov 13, 2014

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Posted on Jan 02, 2017

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1 Answer

What is the spark plug diagram for 1976 dodge colt


do you mean the firing order or which cylinder is which.if you mean firing order its 1,3,4,2. if you mean the other then #1 is the cylinder near the front of the motor or at the end of the motor wear the belts are.then 2,3,4,in order as you go along the motor.

May 21, 2014 | 1983 Dodge Colt

1 Answer

Truck is not firing on 3 cylinders yet it runs.. Runs really rough, back fires, under powered.. Plugs are Wet, Firing order is correct. New Spark plug cables. Don't know that is wrong! Please Help


Check for spark at the plug ( may have coil problem).
If spark is good then do a compression check. Pressure shouldn't be less than 75% of known good cylinders.

Apr 17, 2013 | 1995 Dodge Dakota

1 Answer

1 cylinder misfiring.. what does that mean?



  • Hi, I can help.

  • A miss fire is when a cylinder does not fire off or fires poorly or at the wrong time. This can be a plug or plug/coil wire most of the time but not always.
  • Your engine is a 1.6 liter - 4 cylinder engine. One of them cylinder's is not firing as it should.
  • Did you get a scan and a P0 code that said cylinder misfire? List it here and I will gladly help you figure out what needs to be done to fix it.

  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.

Regards, Tony

Sep 08, 2011 | 1997 Honda Civic

1 Answer

Changed the plugs wires and cap and rotor...think I might have screwed the firing order up....no misfire just wont turn over.


the wires to the plugs should not keep the motor from cranking over. If the battery is fully charged the ignition switch should engage the starter. If you think the firing order is wrong you need to determine 1 where is top dead center (the position the motor is in when #1 cylinder is at the top of the compression stroke). 2 what direction does the rotor turn 3 what is the firing order One way to make it easy to rotate the motor is to remove the spark plugs. no compression means no resistance to the starter so the motor should turn over with the key in the start position. If it won't crank over with the plugs out then something is wrong with the starter, battery, starter relay, or ignition switch. I always start with the basics. the battery should have at least 12.5 volts. if it does check the battery terminals. even if the starter is weak you should hear a click when the key is turned to the start position. Once you get the starter to turn over the motor you can tell when the number one cylinder is at top dead center by putting a finger over the spark hole as you crank over. You will feel the compression as the cylinder comes up on the compression stroke. I have used a large socket to slowly turn the motor over and when you are near top dead center you should be able to see the degrees of advance on the timing mark. Set the motor at top dead center then see where the rotor lines up with the wires on the distributor cap. that is where number one cylinder should fire. You then follow around in the direction that the rotor turns and the wires will corispond with the firing order. I always make a mark on the number one spot on the cap with a felt pen. That way you have a fixed reference point. Take care to verify that all the wires are to the proper plugs before trying to start. Take extra care at this point and make sure your firing order and rotor rotation are correct. I would triple check this. The firing order and rotor direction are usually somewhere on the autozone repair web site

Apr 19, 2011 | Jeep Cherokee Cars & Trucks

5 Answers

What is the firing order for 01 mitsubishi Diamante 3.5


The firing order is 1-2-3-4-5-6, and here is a firing order diagram to help assist you and let me know if you need any help to understand this diagram, or if you require any further assistance.


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Oct 06, 2010 | 2001 Mitsubishi Diamante

1 Answer

Timing my 1998mazda 626 6cyl having problems all day...What do i do?


Hi,
Questions...
Is it trying to fire?
Are you getting fire to the plugs? If so,
double check the firing order, 1,2,3,4,5,6
Make sure wires aren't in wrong places.
Did you replace timing belt? If so, recheck timing mark locations. Are you getting fuel to the cylinders?
Anything else about the engine a person should know for consideration?
I know... mundane questions... but motor 101 "if you're getting fire and gas, something out to happen".
Hope it helped a little... Good luck!

Aug 27, 2009 | 1998 Mazda 626

1 Answer

I put the wrong oil in my 99 lexus es 300 would


No, it would not cause a miss-fire. What oil did you use, wrong weight?

May 05, 2009 | 1999 Lexus ES 300

1 Answer

97 jimmy wont start


Check for a bad distributor cap and or rotor..........a bad cap and or rotor can caues firing (cross fire)across the terminals and introduce spark to the wrong cylinders at the wrong time.......
hope this helps.....good luck!

Dec 14, 2008 | 1997 GMC Jimmy

1 Answer

My motor shakes


1). mis fire on one or more cylinders
2). timing
3). fuel flow
4). air flow
lets go with these for now.

Oct 22, 2008 | 1992 Honda Accord

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