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2011 fusion 3.0

Cheryl
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5 years 10 months ago #41003 by Cheryl

2011 fusion 3.0 was created by Cheryl

Is this fuel injector current ramp enough to call a bad injector. I haven’t done any disassembly yet it’s misfiring on cylinder 2 here’s a screenshot of the scope

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Cheryl
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5 years 10 months ago #41008 by Cheryl

Replied by Cheryl on topic 2011 fusion 3.0

Ohh checked all injectors they are all 13 ohms but cylinder 2 which is 35 ohms

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Hardtopdr2
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5 years 10 months ago #41009 by Hardtopdr2

Replied by Hardtopdr2 on topic 2011 fusion 3.0

Need to zoom in more on current ramp and injector waveform. Is this on cyl. 2?

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Cheryl
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5 years 10 months ago #41010 by Cheryl

Replied by Cheryl on topic 2011 fusion 3.0

No injector waveform is on cylinder 5. Found firing order on google it says it’s 1 4 2 5 3 6

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Cheryl
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5 years 10 months ago #41011 by Cheryl

Replied by Cheryl on topic 2011 fusion 3.0

I’ll zoom in on it when I’m back working on it. Came from a pay here car lot. Has new coil in cylinder 2 and 4 new plugs in all cylinders. Did relative compression test it was okay

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Tyler
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5 years 10 months ago #41012 by Tyler

Replied by Tyler on topic 2011 fusion 3.0

That's enough for me.

I dunno why, but it's always the injectors under the intake on that engine that fail. About 50% of the time, the same injector appears to be wet with fuel.

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Hardtopdr2
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5 years 10 months ago #41013 by Hardtopdr2

Replied by Hardtopdr2 on topic 2011 fusion 3.0

I looked up specs for injectors 11-18 ohms so I would say that injector is failing with 35ohms.

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Cheryl
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5 years 10 months ago #41014 by Cheryl

Replied by Cheryl on topic 2011 fusion 3.0

I’ve never seen an injector fail on this vintage of fusion.9 out of 10 times it’s a coil. Well atleast it has 2 new coils and all new plugs from the buy here pay here lot. With 2 broke plenum bolts.

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Tyler
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5 years 10 months ago #41016 by Tyler

Replied by Tyler on topic 2011 fusion 3.0

Cheryl wrote: I’ve never seen an injector fail on this vintage of fusion.9 out of 10 times it’s a coil. Well atleast it has 2 new coils and all new plugs from the buy here pay here lot. With 2 broke plenum bolts.

Oh coils are still tops on the list of suspects! :lol: But I've seen this a few times now on 3.0's and 3.5's, so I just started ramping them as a matter of course.

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Cheryl
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5 years 10 months ago #41018 by Cheryl

Replied by Cheryl on topic 2011 fusion 3.0

I’m getting the cheapest one tomorrow because the car dealer is cheapp

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juergen.scholl
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5 years 10 months ago #41020 by juergen.scholl

Replied by juergen.scholl on topic 2011 fusion 3.0

It's a good practise to zoom in into the injector voltage and current to spot the actual pintle movement. Without any movement you found the problem. If there is movement you can compare the actual opening time to a known good/working cylinder. The actual opening time is defined by the pintle hump in the current trace - injector opening - up to the pintle hump in the voltage trace - injector closing.

An expert is someone who knows each time more on each time less, until he finally knows absolutely everything about absolutely nothing.

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Cheryl
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5 years 10 months ago #41021 by Cheryl

Replied by Cheryl on topic 2011 fusion 3.0

Yea I was just looking for being all the same current at the beginning. I zoomed in after but forgot to take a screen pic.

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