What could be the reason for my fuel system to be far more deficient then most?

[FoMoCoSHO]

Check again for codes, like BigMac said.  Then draw up a list of observations that you CAN present to the dealer like:  uneven power, sound of "marbles" at part throttle, etc.  And slip in a suggestion that maybe the engine's not getting enough fuel.

You do not have to revert to stock to read the codes.  Codes will come up regardless.  The SCT device should be able to scan the OBD port and present them to you, if any.

I think i will have to do this if the fuel filter change does not fix it. Torrie wanta me to try that first since its the cheapest to do. Anyone know where exactly the fuel filter is located?

High Command says the filter is built into the pump and not serviceable.

2013 is a better pump, you might want to see if you can upgrade to it.

 

[FoMoCoSHO]

Marbles sounding... sounds like detonation under part throttle load. I haven't looked at the log but if it detonates even with a stock tune, there would be some issues that need resolved.

I'll see what the log says...

John

From you log, I don't see anything out of place other than the fact that for whatever reason, you are only able to flow enough fuel to support about 200kpa of boost.  If it goes over 200 your car is loosing HPFP rail pressure and you can see the car leaning out from 11.76 to 12.3.  I don't see any issues with knock so there may be room to turn your timing up.  However, the marble noise worries me as under part throttle low load, maybe inadequate fuel flow is causing it to have less than ideal fuel ratio which makes it more prevalent to detonate.

Of course this is all diagnosis via internet and there could be other "levers" at play causing the issue. 

I would be investigating the LPFP in your car.  Maybe the filter, may be the pump.  I have not heard of any folks having issues with the HPFP but maybe it has issues as well.  I am not sure how you could distinguish between each one.

Can you log the LPFP pressure too?  I have never tried, if so you can see if it is dropping off before the HPFP pressure drops off.

John

200kpa=29psi of boost?? i will have to probably go to dealer but the worst part is putting the plugs to stock specs ughh

Plausible deniability sir, gaps move around.

 

[ElvenSho]

Marbles sounding... sounds like detonation under part throttle load. I haven't looked at the log but if it detonates even with a stock tune, there would be some issues that need resolved.

I'll see what the log says...

John

From you log, I don't see anything out of place other than the fact that for whatever reason, you are only able to flow enough fuel to support about 200kpa of boost.  If it goes over 200 your car is loosing HPFP rail pressure and you can see the car leaning out from 11.76 to 12.3.  I don't see any issues with knock so there may be room to turn your timing up.  However, the marble noise worries me as under part throttle low load, maybe inadequate fuel flow is causing it to have less than ideal fuel ratio which makes it more prevalent to detonate.

Of course this is all diagnosis via internet and there could be other "levers" at play causing the issue. 

I would be investigating the LPFP in your car.  Maybe the filter, may be the pump.  I have not heard of any folks having issues with the HPFP but maybe it has issues as well.  I am not sure how you could distinguish between each one.

Can you log the LPFP pressure too?  I have never tried, if so you can see if it is dropping off before the HPFP pressure drops off.

John

200kpa=29psi of boost?? i will have to probably go to dealer but the worst part is putting the plugs to stock specs ughh

Plausible deniability sir, gaps move around.

gotcha. Do you think they will bother checking the thermostat? I doubt it...

 

[BiGMaC]

Marbles sounding... sounds like detonation under part throttle load. I haven't looked at the log but if it detonates even with a stock tune, there would be some issues that need resolved.

I'll see what the log says...

John

From you log, I don't see anything out of place other than the fact that for whatever reason, you are only able to flow enough fuel to support about 200kpa of boost.  If it goes over 200 your car is loosing HPFP rail pressure and you can see the car leaning out from 11.76 to 12.3.  I don't see any issues with knock so there may be room to turn your timing up.  However, the marble noise worries me as under part throttle low load, maybe inadequate fuel flow is causing it to have less than ideal fuel ratio which makes it more prevalent to detonate.

Of course this is all diagnosis via internet and there could be other "levers" at play causing the issue. 

I would be investigating the LPFP in your car.  Maybe the filter, may be the pump.  I have not heard of any folks having issues with the HPFP but maybe it has issues as well.  I am not sure how you could distinguish between each one.

Can you log the LPFP pressure too?  I have never tried, if so you can see if it is dropping off before the HPFP pressure drops off.

John

200kpa=29psi of boost?? i will have to probably go to dealer but the worst part is putting the plugs to stock specs ughh

Plausible deniability sir, gaps move around.

gotcha. Do you think they will bother checking the thermostat? I doubt it...

I would not (nor ever have worried about) plug gaps or the T-stat...  No problems... usually the techs don't find it if it won't show on the OBD2.... the car will run fine.

For me, I used antisieze when I did my plugs.... ford says no... so they wouldn't need a gap tool to know I "tampered" if they looked.  I think they have better things to do, LOL

As FoMoCo says... you have plausible deniability!

 

[FoMoCoSHO]

Check again for codes, like BigMac said.  Then draw up a list of observations that you CAN present to the dealer like:  uneven power, sound of "marbles" at part throttle, etc.  And slip in a suggestion that maybe the engine's not getting enough fuel.

You do not have to revert to stock to read the codes.  Codes will come up regardless.  The SCT device should be able to scan the OBD port and present them to you, if any.

I think i will have to do this if the fuel filter change does not fix it. Torrie wanta me to try that first since its the cheapest to do. Anyone know where exactly the fuel filter is located?

High Command says the filter is built into the pump and not serviceable.

2013 is a better pump, you might want to see if you can upgrade to it.

Apparently your gen pump has a tendency to crack on the either inlet or outlet, hence the 2013 change.

There could be tuning issues as the newer pump is variable PSi instead of fixed and a higher max PSI.

PM me your vin and I will see what I can find out for you, as far as possible compatibility.

 

[ElvenSho]

Well I checked for codes with the xcal but it shows no codes

 

[ElvenSho]

Check again for codes, like BigMac said.  Then draw up a list of observations that you CAN present to the dealer like:  uneven power, sound of "marbles" at part throttle, etc.  And slip in a suggestion that maybe the engine's not getting enough fuel.

You do not have to revert to stock to read the codes.  Codes will come up regardless.  The SCT device should be able to scan the OBD port and present them to you, if any.

I think i will have to do this if the fuel filter change does not fix it. Torrie wanta me to try that first since its the cheapest to do. Anyone know where exactly the fuel filter is located?

High Command says the filter is built into the pump and not serviceable.

2013 is a better pump, you might want to see if you can upgrade to it.

Apparently your gen pump has a tendency to crack on the either inlet or outlet, hence the 2013 change.

There could be tuning issues as the newer pump is variable PSi instead of fixed and a higher max PSI.

PM me your vin and I will see what I can find out for you, as far as possible compatibility.

 

[ElvenSho]

Well I called the service advisor at the Lincoln dealership and was basically advised to bring the  car in but if there is no codes it’s going to be hard for them to do anything with the warranty until an actual code comes up telling them what needs to be fixed. If they can’t find an issue which I doubt they will) they will charge me 100 bucks for checking the car over. I explained to him about the “marbles” sound under part throttle and explained it could be the fuel pump going out. He asked me if I smell gas around the back of the car, which I explained I do not. If I do decide to take the car in, what should I tell them to look at? I am assuming they will not do any type of dataloging under hard acceleration to  figure out it’s the fuel pressure issue? Unless they can see the fuel pressure issue in their tests also? I was thinking about just telling them I have logs but that would just void my warranty I am sure. (they are nice but I doubt they are nice enough to not void the warranty) Any tips on what to tell them when/if I take the car in? It just bugs me to no end that I can’t take full advantage of the tune/power and I know sooner or later whatever is causing it to have bad pressure will let go anyways so I want it fixed.

 

[SHOdded]

I suppose you could stress to them that you feel the problems are under part and full throttle, that maybe the fuel pump isn't putting out the volume consistently that it should.  It is definitely a gamble, but I'd rather pay the $100 diagnostic fee and have them check out the fuel system thoroughly if nothing else.  You would want fuel pressure, fuel volume, and injector leakdown tests done, basically all the diags they can do without removing components from the car.  As I understand it, dealerships have the equipment to simulate real-world conditions without having to roadtest, assuming they have qualified personnel to use said equipment.

 

[Airbornemaikai]

Having data logs would not void the warranty either, unless of course your logs are from the tune. I've actually used dash command and my OBDII device and cleared my cel for my cats right in front of the technician and he thanked me for saving him the time of having to get his device

 

[ZSHO]

X2 on paying the extra 100.oo twards getting a proper diagnostic testing performed on your vehicle,it will be beneficial if a compression test would also be performed and monitored and importanly obtain the work order to see exactly what kind of tests were done for future reference.

 

[SHOnUup]

$100 to have fuel system checked sounds like a great deal, especially considering the damage that could be caused.

Are you mixing any corn in the fuel?

Scantool and tablet to display torque would be a good thing to monitor, not exact, but would give you real time feedback.

Rich

 

[IHeartGroceries]

What I want to know is, who tunes a car which is obviously mechanically deficient? Especially an E tune...

 

[BiGMaC]

What I want to know is, who tunes a car which is obviously mechanically deficient? Especially an E tune...

It's in Eleven's sig... But without a DTC how would the tuner know?

 

[IHeartGroceries]

According to the OP, the tuner stated the fuel system was working insufficiently...
And tuned accordingly.

 

[BiGMaC]

According to the OP, the tuner stated the fuel system was working insufficiently...

OIC... Thanks, understand your question now.

 

[ElvenSho]

What I want to know is, who tunes a car which is obviously mechanically deficient? Especially an E tune...

I didnt know therr was an issue. Tuner did nothing wrong.

 

[SHOnUup]

Tuner did right thing it sounds...told him of issue and dialed it back to be safe.

Rich

 

[ElvenSho]

Tuner did right thing it sounds...told him of issue and dialed it back to be safe.

Rich

Yup. Car is back to stock as of 5 min ago i need to schedule appt to get the tests done. How long before they cant tell it was tuned? I heard after 50 miles of driving...

 

[ZSHO]

Tuner did right thing it sounds...told him of issue and dialed it back to be safe.

Rich

Yup. Car is back to stock as of 5 min ago i need to schedule appt to get the tests done. How long before they cant tell it was tuned? I heard after 50 miles of driving...

What are you exactly refering to emmission testing!!!!