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Dodge Ram 2012

I have a 2012 Dodge Ram 1500 4×4 my #4 cylinder is miss firing what could cause that to happen?

I have a 2012 Dodge Ram 1500 4×4 my #4 cylinder is miss firing what could cause that to happen?

Donald

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20 Answers

Michael

Probably failed lifter. Very common. Look up MDS lifter failure.

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DonaldQuestion author

@Michael okay thanks

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Michael

@Donald it sucks that is common. I would repair then get a tuner and turn MDS off with tuner.

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James

Welcome to the cam show!

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Christopher

I have the same problem on my ‘09. cylinder 6 misfire. Dodge said it’s a bad cam. That was about 25,000 miles ago. Chose to let it be. No problems since. Not even a check engine light.

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Johnny

If cam & lifters need replaced a little more can get whole new engine I got 2011 I am going this way

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Isauro

I’m getting a 2014 ram soon and removing MDS and cammed definitely worth it these engines are to big to only make 350 to the wheels in 2020

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Todd

Clogged fuel injector, fouled spark plug, bad ignition coil. Worse case scenario is the cam and lifter issue

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SalandLaurena

Tune up then recheck

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Serg

Worse case is a head gasket. There, I said it.

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Larry

My dodge nitro R/T had misfire code 4 times now. Each time it was a coil on that cyl. Does your eng have a coil each cyl?

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Davey

2010 Had to replace cam and hour lifters 1000 in parts 2000 in labor

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Kody

Since you asked. Fouled spark plug, broken spark plug, deteriorated spark plug, plugged injector, open in injector solenoid. Open in injector feed circuit, open in injector ground circuit. Short to ground in injector feed circuit. Short to voltage in injector ground circuit. Open or short in ignition coil control, faulty ignition coil, broken or corroded engine ground. Broken cam shaft, worn camshaft, bent pushrod, broken pushrod. Bent or broken intake valve, bent or broken exhaust valve, broken or damaged piston rings, broken or damaged piston, cracked engine block. Failed lifter, failed MDS rocker, failed MDS solenoid. And More..

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Eddie

Most likley a coil or could be fuel injector or plug went bad

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Greg

Move coil pack from that cylinder to another cylinder see if the miss fire flows. If it does you need a coil pack and replace the spark plug

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DonaldQuestion author

My check engine light isn’t on

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Dakota

Plug

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DonaldQuestion author

@Dakota thanks

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Ediel

Cam

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Joe

It is the valve spring!!! Had it happen 3 times on 1 truck. And 2 times on my other 04 ram

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