I have a code for #6 low contribution and a thumping noise out the exhaust. When I turn number 6 injector off the popping/ thumping goes away. Truck is straight piped and deleted. It started doing this after getting on it hard to get on the high way. Sounds like beating an empty pop bottle on something
View 14 RepliesI have a 2004 F250 with a powerstroke 6.0. I have done the egt delete and oil cooler upgrade. Last weekend I did head gaskets, arp studs, new heads, injector o rings, updated stand pipes and dummy plugs, glow plugs, glow plug harnesses, water pump, and exhaust gaskets. After everything was done and truck was primed and started it ran really rough. I drove it a little to possibly purge any air and it still ran rough and I got a code p0275 for cylinder 5 contribution. I removed valve cover and oil rail and swapped injector 3 and 5. 5 was covered in fuel. After reinstalling oil rail I cranked engine over and saw cylinder 5 intake valves were not moving. Removed rail and rockers. Pulled push rod and it was bent. Installed new push rod a and reassembled. Crank engine over to verify all rockers were moving. Reinstalled valve cover and started truck. Truck ran great. Cleared codes and test drove. After test drive truck sounded like it was missing so I checked the codes again and p0275 was back! I know at this point I need to check the harness but any other possibilies you may know of? FICM voltage it good at 48v and oil pressure reads good as well.
View 7 RepliesI have an 04 f350 with an 03 6.0 motor. Truck started running very rough a two weeks ago. Checked codes and found p0274 and p0275. Both codes are for cylinder 5. I replaced #5 injector and truck ran like normal for a few days then began to miss again when operating temperature hits about 187+. It will show code p0275 once hot as it misses. When cold runs fine, starts fine. No smoke. Could I have put In a bad injector? It was purchased from AutoZone...
View 14 Replies#2 contribution/glow plug/injector code ????? Harness looks good. What's the malfunction?? Runs rough. Never seen those 3 codes together.
View 2 Replies2003 f350 dually. Fully bulletproofed about 10k miles ago. Everything was running great for about 5k miles. A friend of mine got stuck and I went to pull him out. Got him out but got on it really hard...never overheated or anything.
Next day truck throws a cyLinder 5 contribution balance code. Ran ok but idled rough. Pulled injector and put a used one from a running truck in it. Code went away and runing fine for a few weeks. Took a long trip from FL to Texas, and on the way home same code occurred but idle was not as bad. I would clear the code and it would be fine for a few hundred miles, then would show up again. Made it home, still was driving around town a little with the code only showing sometimes. A couple blocks away from home taking off from a stop sign lost all power and motor shut off. Turned out the Injector o ring blew and hydrolocked the motor.
So now, ordered all new 155cc30% injectors , 58v ficm and new oem injector harness. Installed and Drove the truck to Illinois. After about 700 miles I noticed a little rough idle and had a cylinder 4 cont code. Made to Illinois and back to fl. At fl line I had cyld. 4 and 5 codes now. Cleared and cyld 4 was gone but 5 stayed. Got home and balance test showed 4 and 5 bad injectors. Sent them off to be fixed just got them back in. Truck started fine, smooth idle, ran for about 10 miles and cyld 5 code come back and so does the rough idle. I'm at a loss now.
Will be doing compression test tomorrow. Other than a rough idle truck runs flawless, will roast the tires and pull anything hooked to it. No hot starts, no symptoms of anything else. Possibly a problem with the oil rail feed on that cylinder? Main ficm harness? Bent pushrod?
I'm looking at maybe trading for a 2004 F350 with a studded and deleted 6.0. It has a "thumping" sound coming through the intake like an exhaust valve is staying closed. My question is, how common is it for the rocker arm retainer or rocker itself to fail? It has 204k miles, and the owner says he was on his way home about 2 weeks ago and it just started doing it.
View 3 RepliesI have an 03 ex with 03 motor. I use torque pro all the time and periodically check for any codes. Well, I got P0278 but no check engine light. It does seem to start a little different than our 05 with 04 motor. It sounds like it just doesn't fire right away or like it turns over and then decides to start. It doesn't make the destinctive sound at the end of cranking when it starts. I hope that makes since. I could tell it sounded different, that is why I checked for any codes. It also seems to run just fine down the road and at idle. Where to start or what to look for?
View 14 RepliesMy 2011 F350 - 6.7 has developed this KRAZY thump, snap noise under the hood, loud enough to be heard inside the cab, and I cannot find out what the heck it is. It is not directly connected to the motor, you can rev it and the noise does not change. the thump is like, every few seconds or so, especially when the motor is cold. I am afraid this is a 2000 dollar noise and the truck is out of warranty.
View 8 RepliesI have an 06 f250 superduty, 6.0 . Last week I rolled into the throttle up to about 95 and then backed off. After which it developed a thumping noise, not metal, more like an air thump in the intake. Not throwing any codes, still runs strong, pulls boost, etc. The motor does have 285,000.
View 7 RepliesI have recently bought a 04 f250 6.0, and it has the intake thumping noise that varies speed with idle... I was told it could be a broken rocker, a bent push rod, or a broken roller... I am not that much experienced with diesels. I've spoken to the dealership, and they don't wanna fix it, they said it wouldnt hurt it to drive it like that, but the noise bothers the hell out of me, and everyone notices it. so i wanna get it fixed. I am hoping its just a rocker. if it is just a rocker how deep am i in? truck has 240xxx miles on it, and runs perfect other than that noise.
View 7 RepliesJust wondering what this could be.its giving me the 50 miles to 50mph max speed. Def tank is half full.truck runs fine.
View 2 RepliesI had a ford technician plug in and check my CEL. Says P246E, Bank 1 sensor 4, exhaust system fault. I am leaving for holidays in a couple of days but dealer to busy before I leave. Is this something that will leave a guy stranded on the side of the road? I've already been towed once...
View 5 RepliesI have a 2004 6.0 with 75000 miles on it. My truck is throwing a P0470 code pointing at the exhaust pressure sensor. my question is do I need this sensor or can i bypass it? When I look up the part it only shows 2005 and up.
View 6 RepliesMy truck is currently stock and recently started making a knocking noise louder than it usually does. I researched and have found the injectors can make a knocking noise when not performing correctly. I took it to a local shop who hooked it up to a snap on scan tool and ran some tests. It passed the Buzz test but continually failed the contribution test on cylinder 8. I'm going to go home and remove valve cover and unclip the injector to see if the noise goes away. I'm sure hoping it does as an injector by the looks of things is definitely the cheaper option. I'm scared because if I was listening to a gas powered truck and heard the sound my trucks making I would assume it was a lower end noise. My truck only has 148,000 miles....
View 14 RepliesI have a 2006 F350. It started running rough and white smoke from the exhaust. I did an injector buzz test and found no codes. Cylinder contribution check showed cylinder one was not functioning. I replaced number one injector, cleaned injector cup installed new injector and copper washer. Engine runs the same. If it was a wiring harness issue should that have shown up in the buzz test?
View 8 RepliesI have a 2011 that does not currently have the complete factory exhaust system on it and no muffler. With the nice weather I have been driving around with the windows down and hear a noise out of the exhaust that sounds like tires spinning on wet pavement when I let off the throttle or at some shifts of the transmission. Boost seems normal, and don't hear any noise while under load. I think it is just the VGT closing and making the noise. With deleted sys heard this noise in exhaust?
View 4 RepliesOn my way home from picking up or new Voltage 5er, I could hear a loud squealing noise when we pulled up to the house. After crawling around the under side of the truck I found the last exhaust thermal couple had either blew out or just fell out.
View 9 RepliesI just got a 5 inch turbo back Magnaflow stainless exhaust system installed on my 2007 F 450. The downpipe rests directly on the firewall and causes a horrible vibration and noise at times. I have been on the phone talking directly with Magnaflow trying to resolve this issue
View 6 RepliesFor a while now, I have been hearing a very high pitch whistle noise from the turbo/exhaust area. Everybody told me it was an exhaust leak, but I never could pin point the leak. While I was under the truck last weekend I found the flex joint on the passenger side up pipe was broken a leaking.
I ordered a Dorman replacement pipe that comes with a new gasket and hardware.
I will be the first to admit, I am not a fan of Dorman parts... BUT, this pipe is really nice. It looks identical to the pipe being sold on Dieselsite.com, it doesn't have the scoop inside to direct exhaust gas to the EGR cooler and it comes with all the mounting hardware.
[URL] ....
Once I got the turbo down pipe out of the way and soaked the bolts with penetrating oil, I had the broken up pipe off in 30 minutes.
I posted a few threads about the P04DB code over the past several months. Last month while on vacation it came back and this time I was getting an engine light. So I finally got around to taking it in. The A/C blower was also making a clicking noise so I thought I would take care of both of those. At 41k and 42 months in service, the factory drive train warranty covered the CCV sensor replacement. The fan blower had to be replaced. So if getting that P04DB past 3/36, it is covered under the 5/60.
View 2 RepliesI've topped up the DEF and the warning is still showing that I'll have reduced engine power within 45kms.
Its weird, just yesterday it showed 550kms to empty so I added one full container, all day it kept showing less and less kms' til empty. Warning lights and bells etc.
This evening topped it completely and still shows. Is there a way to reset it without having to stop at the service dept.