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Old 03-27-2020, 11:14 PM   #1
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2016 Ford V-10 Misfire Issue

I have a 2016 Vista with the v 10. I have a very bad
misfire when below 2000 rpm, it shakes and shudders
until it gets above 2000 rpm then it smooths out completely
As if there is nothing wrong. Bad coil pack , bad injector
I'm at a loss as to what the problem might be. Any ideas
As to what it could be, I have about 12,000 miles on her.
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Old 03-27-2020, 11:24 PM   #2
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Hi kc8kix,

If you have an check-engine light displaying on your dash, then drop-in to your local auto parts store for a free error code reading. I know for sure that O'Reilly does this. You might do this even if no check engine light is displayed, as perhaps the warning light itself is faulty. It really is odd to not throw a code with a misfire.

If you cannot get an error code, then I would replace the fuel filter.

Thanks, Eagle5
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Old 03-28-2020, 09:40 AM   #3
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I agree on getting codes. If it says one bad cylinder firing that could be anything from what you mentioned to a cracked head gasket or block. CruiseAmerica sent me out in such a condition. If you are losing coolant--that would be the sign.
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Old 03-28-2020, 04:53 PM   #4
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Are you the first owner?
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Old 03-28-2020, 07:35 PM   #5
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Vacuum leak?
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Old 03-28-2020, 09:17 PM   #6
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The code shows a faulty fuel injector on #4 cyl.
The question is why does it work at higher rpms.
And yes I am the original owner.
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Old 03-28-2020, 10:12 PM   #7
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Codes often say that, when there can be a lot of reasons. Like, a vacuum leak...
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Old 03-28-2020, 11:22 PM   #8
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What is the code? Is it like a P0304
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Old 03-28-2020, 11:37 PM   #9
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I don’t mean to be cavalier, it’s just that these sensors often show a low oxygen flow, when it’s simply a vacuum leak, presenting a confusingly diagnostic.
Mine was the air flow sensor in the filter, nothing like a real low bank registery.
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Old 03-29-2020, 07:59 AM   #10
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switch the coil pack to a different cylinder and see if it changes what the miss fire does
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Old 03-29-2020, 08:09 AM   #11
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Quote:
Originally Posted by njtinman2001 View Post
switch the coil pack to a different cylinder and see if it changes what the miss fire does
That is an excellent idea, but I would add to it. Move it more than one cylinder, preferably to the opposite side. That would rule out my worst case scenario of cracked block/blown head gasket (assuming the error code moves to that other cylinder). If you just swapped it to an adjacent cylinder and it switched to that one, you wouldn't rule the worst case out.

You might as well change out that plug while you're at it.
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Old 03-29-2020, 08:53 AM   #12
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I would also move it to the other bank
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Old 03-29-2020, 11:07 AM   #13
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If you purchase a simple scanner for under $30 you could than see if the code changes to a different cylinder with the swapping of coil packs.
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Old 03-29-2020, 10:53 PM   #14
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I've got an appointment with a dealer. I realised that its still under warranty for another
2 months. Get it in before the warranty runs out, and let them figure it out. Thanks anyway for all the help you've given me .
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Old 03-29-2020, 11:14 PM   #15
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Dealers, Dealers...

Quote:
Originally Posted by kc8kix View Post
I've got an appointment with a dealer. I realised that its still under warranty for another
2 months. Get it in before the warranty runs out, and let them figure it out. Thanks anyway for all the help you've given me .
Hopefully, you’ll get it back in time to actually use it again. #hatethe19
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Old 04-05-2020, 06:03 PM   #16
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Sounds like a coil pack
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Old 04-05-2020, 06:21 PM   #17
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2016 Adventure V10

Had a problem with the engine light. Turned out to be burnt valves on both heads. Warranty paid for labor and parts.
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Old 04-05-2020, 07:15 PM   #18
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Typical COP coil on plug. Some are easy some are not. Just fixed mine---the easy one. Good luck
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Old 04-05-2020, 08:15 PM   #19
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Burned valve

I hope there is a simpler answer to your problem , but I had a car do that once, turned out to be a burned valve, it smooths out because at higher Rpm the valve closes better.
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Old 04-06-2020, 09:04 AM   #20
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Quote:
Originally Posted by kc8kix View Post
The code shows a faulty fuel injector on #4 cyl.
The question is why does it work at higher rpms.
And yes I am the original owner.
I had a similar problem and found that a squirrel had chewed into the injector wire.
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