Ok, I have a 2003 F350 with the 6.0. All at once I replaced the oil cooler and did EGR Delete. I also replaced the ICP, EGP, IPR, ECT, and EOT sensors, and blue spring upgrade. I also took the turbo apart, cleaned and inspected it. I also did new injectors. Now I have this weird like back fire or burp happening as you can see in the video.

It only happens once things get around 160 degrees. seems to do it only at idle. If I unplug the VGT solenoid, its worse. I suspected the turbo. So took it off again, really looked at it closely, and it seemed good. A little bit of pitting under the veins, but veins and unison ring look good. Clamp seems good. No sound of an exhaust leak where the y pipes connect. But when it does the burp thing, there is a little bit of smoke that creeps out around the turbo somewhere. Also is not throwing any codes.

Any help would be greatly appreciated, and thank you in advance.

Video Link: https://www.youtube.com/watch?v=bMDV...ature=youtu.be

 

What do you have to read codes and live data? Need SG2 or DashBoss or? It really is the best way to narrow things down properly. Could be several issues. I would start there.

 

While mhoefer is right, that sounds a lot like a exhaust valve issue.

 

I'm thinking it's an injector problem. Unless you can hear the popping back up at the air intake.

 

I would agree except for the metalic sounding click like a valve snapping back inplace.
That said I also did not hear anything in the engine compartment that you would normally also hear for a valve.

 

Sounds like an injector over fueling, notice the puffs of black smoke.

What injectors did you use? Are they Ford OEM or something else?

.

 

Thanks for all the feed back. Up until now, I have only been using my bully dog for codes. I am looking to purchase a better, PC based diagnostic program, so if there is an in-expensive one you would recommend that would be great.

When I got the truck, I had codes for two injectors and the oil temp was about 30 degrees hotter than coolant. The truck really had cold start issues. But once warm ran great. Now after all the work, its opposite. If it is indeed one of the injectors (OEM), could it be the FICM? Thats really the only thing everyone has problems with that I have not touched yet.

There are no metallic noised from the engine hinting at a valve issue, and as far as the intake, its stays constant air flow. No popping or anything.

 

Do you remember what the codes were? Do you still have them, did you clear them, or did they go away?

It is possible the FICM could cause this. Has the FICM ever been repaired or updated? What are you getting for voltage cold/hot?

I would also not rule out a harness issue, but if there is a difference now from the when the old injectors were in then probably not the harness. Still can't hurt to check those common chafe locations.

Keep an eye on the oil level to be sure there is no increase. Can also do a bubble test.

Some injector codes:


P0261 INJ Cylinder Number 1 Injector Circuit Low Open circuit, fuel injector, FICM connector loose
P0262 INJ Cylinder Number 1 Injector Circuit High Circuit short to ground or voltage, fuel injector
P0263 INJ Cylinder Number 1 Contribution/Balance Power cylinder, valve train or injector
P0264 INJ Cylinder Number 2 Injector Circuit Low Open circuit, fuel injector, FICM connector loose
P0265 INJ Cylinder Number 2 Injector Circuit High Circuit short to ground or voltage, fuel injector
P0266 INJ Cylinder Number 2 Contribution/Balance Power cylinder, valve train or injector
P0267 INJ Cylinder Number 3 Injector Circuit Low Open circuit, fuel injector, FICM connector loose
P0268 INJ Cylinder Number 3 Injector Circuit High Circuit short to ground or voltage, fuel injector
P0269 INJ Cylinder Number 3 Contribution/Balance Power cylinder, valve train or injector
P0270 INJ Cylinder Number 4 Injector Circuit Low Open circuit, fuel injector, FICM connector loose
P0271 INJ Cylinder Number 4 Injector Circuit High Circuit short to ground or voltage, fuel injector
P0272 INJ Cylinder Number 4 Contribution/Balance Power cylinder, valve train or injector
P0273 INJ Cylinder Number 5 Injector Circuit Low Open circuit, fuel injector, FICM connector loose
P0274 INJ Cylinder Number 5 Injector Circuit High Circuit short to ground or voltage, fuel injector
P0275 INJ Cylinder Number 5 Contribution/Balance Power cylinder, valve train or injector
P0276 INJ Cylinder Number 6 Injector Circuit Low Open circuit, fuel injector, FICM connector loose
P0277 INJ Cylinder Number 6 Injector Circuit High Circuit short to ground or voltage, fuel injector
P0278 INJ Cylinder Number 6 Contribution/Balance Power cylinder, valve train or injector
P0279 INJ Cylinder Number 7 Injector Circuit Low Open circuit, fuel injector, FICM connector loose
P0280 INJ Cylinder Number 7 Injector Circuit High Circuit short to ground or voltage, fuel injector
P0281 INJ Cylinder Number 7 Contribution/Balance Power cylinder, valve train or injector
P0282 INJ Cylinder Number 8 Injector Circuit Low Open circuit, fuel injector, FICM connector loose
P0283 INJ Cylinder Number 8 Injector Circuit High Circuit short to ground or voltage, fuel injector
P0284 INJ Cylinder Number 8 Contribution/Balance Power cylinder, valve train or injector
P0297 INJ Vehicle Overspeed Condition Excessive engine speed, VSS interference



P0300 INJ Random Misfire Detected Oil/fuel aeration, base engine
P0301 INJ Cylinder Number 1 Misfire Detected Base engine, injector
P0302 INJ Cylinder Number 2 Misfire Detected Base engine, injector
P0303 INJ Cylinder Number 3 Misfire Detected Base engine, injector
P0304 INJ Cylinder Number 4 Misfire Detected Base engine, injector
P0305 INJ Cylinder Number 5 Misfire Detected Base engine, injector
P0306 INJ Cylinder Number 6 Misfire Detected Base engine, injector
P0307 INJ Cylinder Number 7 Misfire Detected Base engine, injector
P0308 INJ Cylinder Number 8 Misfire Detected Base engine, injector



Yours is not a common problem, in fact I don't think I have seen a 6.0 do that.

.

 

I originally had a constant P0269 Cylinder Number 3 Contribution/Balance Power cylinder, and an occasional P0278 INJ Cylinder Number 6 Contribution/Balance Power cylinder. Those are the two injectors I replaced, and have not got a code since. The only code Im getting (Bully Dog) is something about OBII not learned, and an occasional EGR code. Im assuming because I did the delete, but left the sensor in for fan controls. I have tried running it with the EGR unplugged, but made no difference on my problem.

Im going to borrow a scan tool from a friend today and try to get you guys some better numbers to work with. Thanks again for the help.

 

Although this may not be causing the burping, but since you are doing some repairs, why not give the truck a OEM oil cap and filter.

 

Here are some numbers for you guys, I wasn’t quite sure what to monitor, but did all the ones that made sense to me.
EBP(volts)- 1.09-1.19 spiked at the burp (that’s what Im going to call if for now)
FICM synchronization – yes
FICM logic power fused from FICM relay- 12.5-13.5 volts. (drops from 13.5 to 12.5/13 volts about every 4 to 8 seconds)
FICM main internal injection power- 47.5 – 48.5 volts. (Fluctuates identical as the power in)
ICP - .81-.97 volts. (drops from .97 to .81 volts at the burp)
ICP Desired- 637 PSI
IPR%- 24.61-25.39, (spikes at burp)
VGT- 65% (pretty constant)

The difference in FICM voltage doesnt appear to be correlated with the burp.. It jumps up and down quite a bit more often. Over a 15 minute span, there was NOT a single misfire on any injector. Does all this help at all?

Note: All readings were taken at idle.

 

I think you may want to look at ICP actual pressure see if it drops in relation to the burp. May be a sticking turbo tho. Also look at maff and IAT1 readings.
Any smoke when it burps?

 

yes, black smoke. I will check on the other readings.

 

Here are some additional readings as requested:
MAF LB/min= .02
MAF-F= No fault
IAT Volts= 2.34
IAT1= 102 deg. F
IAT2= 129 deg. F
ICP- PSI= 632-644

Again, all readings at idle

 

I appreciate you saying something about that oil cap. I had no idea that was the wrong one. I do have an OEM filter, and after some studying this week, this is a bad scenario. I will be getting a new one today.