Ecoboost Performance Forum

well my bad luck this week continues. pulling in the garage after some spirited driving last night the car started to chug and miss. exhaust had an extremely strong fuel odor. CEL was on but the X4 wouldn't read them until this morning although i immediately suspected a stuck injector.
C0303-cylinder 3 misfire
C00C6-Fuel rail pressure too low

cleared the codes,put everything back to stock and disconnected the positive cable. gets towed to the dealer monday.
don't think the dealer will poke around in the ECU but i hate knowing about this
http://www.revbase.com/BBBMotor/TSb/DownloadPdf?id=171551

also paranoid about having the car sit all weekend with the leaky injector and flooding the cylinder and it bending a rod when the dealership goes to crank it.
not too stoked on this with only 31k on the car.


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 car running and white smoke oozing out the tailpipe after i shut it down(https://uploads.tapatalk-cdn.com/20170429/252213fa72436e39fb19f144d3d55c87.jpg)(https://uploads.tapatalk-cdn.com/20170429/5655042ec812529212d528662593715b.jpg)


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What does the smoke smell like?

Did you notice the temp climbing while you were driving?

Quote from: StealBlueSho on April 29, 2017, 02:52:10 PM
Did you notice the temp climbing while you were driving?

smoke smelt FUEL and very strongly so. was a quick jaunt home before i noticed the issue so i didn't have my eyes on the gauges really


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At least it's not coolant... cracked heads or block etc...

Looks like 2 different issues.  Fuel injector and HPFP pump.

Too early 4 sure

do not take the chance with dealer.  Swap the 2bar MAP back in and use the SCTx4 and return the tune to the stock tune.  The dealer likely will look at the ECU and it had been reported before that they will sometimes update the strategy when a car is in for service.  Specially with a CEL and some sort of fuel related issue I would bet they reflash/update the strategy as part of the work...  Not worth the risk when takes 20min to change..

Be interesting to see what they say about the WG mod...

Quote from: lamrith on April 29, 2017, 04:03:10 PM
do not take the chance with dealer.  Swap the 2bar MAP back in and use the SCTx4 and return the tune to the stock tune.  The dealer likely will look at the ECU and it had been reported before that they will sometimes update the strategy when a car is in for service.  Specially with a CEL and some sort of fuel related issue I would bet they reflash/update the strategy as part of the work...  Not worth the risk when takes 20min to change..

Be interesting to see what they say about the WG mod...

oh no way! already put the car back to stock tune first thing this morning. removed wastegate and even disconnected all the catch can hoses and hid them from visibility and hooked the oem pcv system back up. i left the the can(behind front bumper) and hoses in place but that's literally the only thing that's not oem on the car currently. i'm pretty sure they won't see it as they'll only be working in the top of the engine bay.
i even unplugged the positive battery cable to erase the ECU flash memory. i got the strategy updated about 6 months ago and to the best of my knowledge it already had the latest strategy code. if i come back with a different one then so be it. i'm sure brad could use some extra $ for a strategy update right now! ;)


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Quote from: SHOdded on April 29, 2017, 03:50:40 PM
Looks like 2 different issues.  Fuel injector and HPFP pump.

Too early 4 sure

i'm hoping it's not the HPFP. during full load it always stays at 2k+ but it is possibility. I'm thinking the injector issue may have caused other code to trigger.


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True, the misfire code makes the injector the priority.

Stuck injector, guaranteed. I had the same codes and symptoms. With an injector stuck open, you won't build pressure in the fuel rail. You'll probably need an oil change. I would recommend NOT driving it. All that unburnt fuel in the exhaust can/will damage the cats. Having it towed to the dealer for repair is a wise decision. :)

Should be covered under the 7 yr/75k mi long term defects warranty.

This was mine:

(https://uploads.tapatalk-cdn.com/20170429/d0e4d171ec897cca3f19cb26cb127820.jpg)


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Quote from: MiWiAu on April 29, 2017, 05:47:51 PM
Stuck injector, guaranteed. I had the same codes and symptoms. With an injector stuck open, you won't build pressure in the fuel rail. You'll probably need an oil change. I would recommend NOT driving it. All that unburnt fuel in the exhaust can/will damage the cats. Having it towed to the dealer for repair is a wise decision. :)

Should be covered under the 7 yr/75k mi long term defects warranty.

This was mine:

(https://uploads.tapatalk-cdn.com/20170429/d0e4d171ec897cca3f19cb26cb127820.jpg)


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yep i thought if you! i will request that the dealer not start it to avoid potentially bending a rod of the cylinder has flooded. . don't know if they will abide tho. they might have to run it to make the codes pop up again since i cleared it to flash back to stock.
MiWiau did they only replace the one injector on yours? how many miles since then? wish i could get them to replace the whole set.


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Quote from: Colorado-SHOBro on April 29, 2017, 06:11:26 PM

MiWiau did they only replace the one injector on yours? how many miles since then? wish i could get them to replace the whole set.

I asked them to change the set, but they said Ford would only cover the 1 bad injector under warranty. I decided to pass on paying extra, but it couldn't hurt to ask your dealer.  I had ~32k miles on mine when the failure occurred last September, and I'm now at ~42.5k. No issues since then (knock on wood).

I had fuel in my oil, so an oil change was required. They also said warranty would only cover Motorcraft oil, even though I had just switched to Amsoil 2k miles earlier. I ended up dropping off 6 qts of Amsoil at the dealer (my expense). Just a heads up in case you are running something other than MC oil.

Also, I'm not sure if it has helped or not, but I've been adding Amsoil HP Marine TC-W3 oil to my fuel (1 oz oil for every 4-4.5 gal of fuel) at every fill-up since the injector failure in the hopes that it would help keep the fuel system better lubricated.


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Quote from: MiWiAu on April 29, 2017, 06:23:44 PM

Quote from: Colorado-SHOBro on April 29, 2017, 06:11:26 PM

MiWiau did they only replace the one injector on yours? how many miles since then? wish i could get them to replace the whole set.

I asked them to change the set, but they said Ford would only cover the 1 bad injector under warranty. I decided to pass on paying extra, but it couldn't hurt to ask your dealer.  I had ~32k miles on mine when the failure occurred last September, and I'm now at ~42.5k. No issues since then (knock on wood).

I had fuel in my oil, so an oil change was required. They also said warranty would only cover Motorcraft oil, even though I had just switched to Amsoil 2k miles earlier. I ended up dropping off 6 qts of Amsoil at the dealer (my expense). Just a heads up in case you are running something other than MC oil.

Also, I'm not sure if it has helped or not, but I've been adding Amsoil HP Marine TC-W3 oil to my fuel (1 oz oil for every 4-4.5 gal of fuel) at every fill-up since the injector failure in the hopes that it would help keep the fuel system better lubricated.


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i'm definitely going to press the issue and attempt to get all 6 but doubt i'll have much luck. ill have to look into the Amsoil supplement.
i have 6 quarts of amsoil handy but i might let them put the motorcraft in and just change it after 1,000 miles or so afterwards. any harm in doing this? i've always heard your not supposed to go synthetic and then go back but at least the motorcraft is semi-synthetic.


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I don't think you'd have any issues with changing it back out to full syn after 1k mi. It's supposed to be compatible with other oils.

I was originally worried about contaminating my new oil if all the fuel hadn't drained out, but a subsequent oil analysis did not show any concerning fuel content.

I'm basically using the 2-stroke Amsoil as an upper cylinder lubricant (UCL). If you search google for upper cylinder lubricant, you'll find LOTS of opinions. LOL If you decide to go that route, you need to make sure you use a TC-W3 rated oil, which has low ash content and [supposedly] won't foul up O2 sensors or cats.

Good luck, sir!


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Update:
Got the car back from the dealer yesterday. Warranty was approved and injector 3 was replaced along with an oil change and coolant topped off and burped. Spark plug was not fouled so it was not replaced although i will pull it and verify myself. i wonder if they noted it was not an OEM plug. . . or if they were able to tell it wasn't an OEM thermostat when they pulled that out. I highly doubt it as it looks similar at first glance.
Also, the strategy did not change so i'll be putting the car back to my preference soon.

Overall this was the 2nd positive experience i've had from warranty work done at this dealership. The job took longer than expected as they had to get approval from the warranty company(which had me sweating for a day) and had to order in injector o-rings.

I asked one of the service writers if fuel dumping through the exhaust could cause the cats to fail or harm them in general. He said it's hard to say but if i didn't run the car for long with the stuck injector he doubts it would be a big deal. He suggested driving the car on the highway and "getting on it" to let the car breathe and heat up the cats to cook off any residual fuel. I gladly obliged on the way home  :punk: Feels good to have the car back . . even in stock form for now.