I just replaced my FPR and put on a 4" turbo back MBRP exhaust.

I replaced the FPR trying to fix the idling issue I was having when the truck was in gear at a stop. It didn't fix it.........right back to where I was. Now the truck is surging at smoking at an idle, in gear, stopped. Doesn't do it in neutral or any other time. The smoke is a blue-white color. Injectors? HELP!!

I'm about ready to run it off a cliff.

I just replaced my FPR and put on a 4" turbo back MBRP exhaust.

I replaced the FPR trying to fix the idling issue I was having when the truck was in gear at a stop. It didn't fix it.........right back to where I was. Now the truck is surging at smoking at an idle, in gear, stopped. Doesn't do it in neutral or any other time. The smoke is a blue-white color. Injectors? HELP!!

I'm about ready to run it off a cliff.

Disconnect your Edge and try it. Even at Level 0 signals still run through the module.

I just replaced my FPR and put on a 4" turbo back MBRP exhaust.

I replaced the FPR trying to fix the idling issue I was having when the truck was in gear at a stop. It didn't fix it.........right back to where I was. Now the truck is surging at smoking at an idle, in gear, stopped. Doesn't do it in neutral or any other time. The smoke is a blue-white color. Injectors? HELP!!

I'm about ready to run it off a cliff.

Being you said you just replaced the FPR i would go back and make sure you connected everything properly. Are there any codes ? and did it smoke before you did the FPR ?

Make sure its a tall cliff

No codes

No smoke before that I could see but I'm figuring the exhaust and pressure may be the reason for that.

I had a wierd smell before this work, kind of like kerosene, that is what the smoke smells like now.

I'm thinking the cat may have caught a lot of the smoke before.....now it is just getting pushed out.

took the edge completely off and got the same thing..........ideas?

took the edge completely off and got the same thing..........ideas?

How many miles driven since this problem came up.....bad / contaminated fuel?

Other than being stock now (edge removed) - how is it for power?


If you have loss of power, do you get the 1093 Low Fuel Pressure codes? I had 2 FPRV's before they changed the rail as the Relief valve seat was bad as well.

Search "bottle test"

no codes and power seems fine

I've went through about 2 tanks since this started.

The smoke smells like kerosene. A sweat smell but yet will burn your sinuses after a couple inhales. It smells rough enough that sitting iin the truck if there is enough breeze coming from behind it with stink up the whole truck. The more I look at it the more white it looks which makes no sense when comparing back to other notes and issues listed above.

no codes and power seems fine

I've went through about 2 tanks since this started.

The smoke smells like kerosene. A sweat smell but yet will burn your sinuses after a couple inhales. It smells rough enough that sitting iin the truck if there is enough breeze coming from behind it with stink up the whole truck. The more I look at it the more white it looks which makes no sense when comparing back to other notes and issues listed above.

How's your coolant level....(sucking in coolant from bad h-gasket?)

Upper rad hose? rock hard?

Upper rad hose? rock hard?

Explain.......

it isn't leaking if that is what you are asking.....

I did mess with a lot of that crap when I replaced the FPR. More info please.

Explain.......

it isn't leaking if that is what you are asking.....

I did mess with a lot of that crap when I replaced the FPR. More info please.

Driver's side rad hose upper....running temp, engine running, hose should be firm but NOT hard. Let it cool down over night, check it first thing before starting, hose should be soft (and sometimes it is flattened...another non related small issue).

Coolant level. Is there any missing? White smoke (not to be confused with white exhaust) could indicate she's eating coolant.

Engine off and cold (in the morning)....unscrew the overflow bottle. Should not relieve excessive pressure.

Driver's side rad hose upper....running temp, engine running, hose should be firm but NOT hard. Let it cool down over night, check it first thing before starting, hose should be soft (and sometimes it is flattened...another non related small issue).

Coolant level. Is there any missing? White smoke (not to be confused with white exhaust) could indicate she's eating coolant.

Engine off and cold (in the morning)....unscrew the overflow bottle. Should not relieve excessive pressure.

will check the hose.........last time I was in that area (about a week ago) it seemed fine

coolant level alert cam on yesterday but I figured that might have been from me spilling some fluid out when I replaced the FPR. I refilled it so we shall see on that one.

I'll check the pressure deal tomorrow also.

Thanks for the help so far.

Damn L you gonna get that thing fixed or what?

You might be on your own for head gaskets. I'll give you a call Thursday unless you get it figured out before then.

What are your injector balance rates?

I can answer that for him

He hasnt had them checked yet and we plan on checking them Thursday with my EFI Live.

I am thinking maybe an injector going bad or a wiring harness. Those would be the easiest to repair but if it is head gaskets well that is a whole nother beast.

if it is a head gasket I'm going to pray my engine and drivetrain warranty will cover it......

wiring harnass would be better that the latter two......but injector won't be too bad. I'll have to learn a lot one one of those though cause I'm not sure I want a stealer to fry me with one of those.

if it is a head gasket I'm going to pray my engine and drivetrain warranty will cover it......

wiring harnass would be better that the latter two......but injector won't be too bad. I'll have to learn a lot one one of those though cause I'm not sure I want a stealer to fry me with one of those.

i just did mine and they are not that bad. i wouldnt take it to the stealer unless you have warrenty. other than that its gonna cost upwards of almost 4000 to 6000+ dollars to have gaskets done at a shop

Very interested... My LLY gives alot of blue/white smoke at high idle. Hopefully mine is the cold weather. My balance rates are fine.

what is the range the balance rates should be within?

according to the upper radiator hose, it isn't the head gasket I guess (it is soft after sitting all night and all day)

according to the upper radiator hose, it isn't the head gasket I guess (it is soft after sitting all night and all day)

Good, now check out the injectors and harnesses....

Tomorrow we will check balance rates first and if all rates are within specifications we will look into the harnesses. Thank goodness I can turn each cylinder off with EFI Live and see if we can narrow it down to the culprit harness.

played with the harnesses and couldn't get anything odd out of it today..........we shall see tomorrow.

boy i hope u figure this out my 05 gmc is doin the same thing. more so if its cold say under 30f if its above 45 it dosent do it nearly as bad. but its been about 2000 miles and no hard rad hose or coolant loss so i been reading but havent got efi or anything to check injectors

boy i hope u figure this out my 05 gmc is doin the same thing. more so if its cold say under 30f if its above 45 it dosent do it nearly as bad. but its been about 2000 miles and no hard rad hose or coolant loss so i been reading but havent got efi or anything to check injectors

You should fill out your signature under the USER CP settings so we know what you have. Welcome to the forum.

I don't either.....just good friends.....I'll keep you posted.

Just got mine back from the dealer with the same issues, had 2 bad injectors. Truck Runs great now, but now I am smelling raw diesel in the cab and outside the truck. So I will be back at the dealer next week.

Balance rates are as follows:

1........-5.1
2........1.05
3........13.0
4........-1.6
5........-2.0
6........-2.57
7........-2.96
8........-1.18

Looks like number 3 is getting replaced first...........

Anybody got a DIY/info/part/rebuild suggestions????

Thanks C. Bagley and EFI!!

I would check the connector and ice pick first, before I change it out. These connectors on these trucks suck, I seem to have to do 4 every 2-4 weeks.

Are you referring to Ice Pick that one injector. I thought you have to do the entire harnass. Which for the #3 side (odd side) would be the connector at the back passenger side, correct?

Ice pick the one connector, 2nd one behind the FICM. Odd are all on the passenger side, starting at the front #1, 3, 5, 7. 7 being the backside by the firewall.

Cheaper than an injector if this ends up being the issue.

i was going to try the ice pick trick but didnt see temp playing a role in the injector harness problem or injector problem figured that close to the engine cold wouldnt get to it?

I understand the ice pick trick on the main harnasses but can you explain this on the smaller injector plug and what it does? I'm all for trying it but I'd like to know what I'm doing before I do it

Also, my Edge was on when we checked the rates, will this throw a single injector off? I mean if all the others are consistant, is that one truely gone?

I understand the ice pick trick on the main harnasses but can you explain this on the smaller injector plug and what it does? I'm all for trying it but I'd like to know what I'm doing before I do it

Grab a coffee (or other bevy of choice) and read up on it. The ice pick fix is just for the connectors at the injectors. The Harness Rub is the harness that lies ontop of the Alternator bracket. Thats just tape up and go.

http://www.dieselplace.com/forum/showthread.php?t=142114

I just had my Balance Rates checked with EFI live (thanks 06Bowtie_Guy). Looks like 5 and 6 are out of spec

Also.....

Will it hurt me to keep running it like it is for now?

Also.....

Will it hurt me to keep running it like it is for now?

Eventually it will catchup to you, more fuel isn't always a good thing.

Grab a coffee (or other bevy of choice) and read up on it. The ice pick fix is just for the connectors at the injectors. The Harness Rub is the harness that lies ontop of the Alternator bracket. Thats just tape up and go.

http://www.dieselplace.com/forum/showthread.php?t=142114

I just had my Balance Rates checked with EFI live (thanks 06Bowtie_Guy). Looks like 5 and 6 are out of spec

Heres the screen capture.

Have a look at 5 and 6.... :mad: Click the file and then zoom.

96962

Heres the screen capture.

Have a look at 5 and 6.... :mad: Click the file and then zoom.

96962

HA, your's look good compared to mine. #1 was at -5.1 average and #3 was at 13 average.

HA, your's look good compared to mine. #1 was at -5.1 average and #3 was at 13 average.

Are you withing your 5 yr / 100K Engine & powertrain mileage warranty? Its 5 year 160 up here....

13mm3 ya thats pretty sad.

I'm heading to the dealer on Monday to have them check it and hopefully it does the same for them.

The day I picked it up from getting Head Gaskets (November), it slobbered fuel all over the place. It was a loose injector line coming off the CP3. I asked them if they checked the bal rates and they said they did....It made a different noise right from the day I picked it up and they were telling me the rates were good.

After messing with the inj system I'd have thought first thing would be to max out the line pressure and check bal rates....guess thats why I'm not a mechanic :rolleyes:. They should have picked that up right away.

At least were getting somewhere on this issue.

I'll have an injector by the end of the day today. Might not get installed till Sunday but we shall see.

And now I'm under an extended warranty which doesn't cover injectors.......lubricated parts of the engine and drivetrain only.

At least its just one. If mine go, i might get some performance ones, then ill probably cook the turbo....... its a vicious cycle.

does it make sense for the truck just to quit surging? could the truck fix itself?

I went to start changing out the injector yesterday and wanted to mess with the harnass before I started just to make sure that the harnass wasn't the issue, one more time, and it won't surge/smoke for me. Drove it 100 miles today and nothing....... Sat in the shop, idling, in gear for an hour and nothing.

Have you rerouted the PCV (Crank Case Vapor)?

does it make sense for the truck just to quit surging? could the truck fix itself?

I went to start changing out the injector yesterday and wanted to mess with the harnass before I started just to make sure that the harnass wasn't the issue, one more time, and it won't surge/smoke for me. Drove it 100 miles today and nothing....... Sat in the shop, idling, in gear for an hour and nothing.

Yes, been there, that's why I said check the connector first. Also could have been bad fuel.

Ok here is where I stand.

It started acting stupid again and I was able to play with the connector and get no change in action. So I went ahead and changed the injector. Haven't went very far with it yet but so far so good.

The old injector was black on the tip and had a lot of, what looked to be, metal shaving on it. They were also up the side of the old injector. Is this normal?

Truck seems to be running fine for now but time will tell.

Going to see about catching up with my buddy some time this week and check the balance rates again just to be sure.

Shouldn't see any metal filings, black is normal. I would borescope the cylinder if you could. Have you ever over heated the engine or run a big tune for long periods?

nope and nope

First time I've ever saw any trash in or around this motor.

You have 2 choices borescope it or ignore it. You shouldn't see any sign of metal, usually this means the piston is breaking down. But some have had piston failure with stock tunes. Check out speedpro's thread labeled "Blown Engine".

I don't know what else to tell you, worst case install the new injector and let her buck worst case you have to build a new engine:D

engine is covered under extended warrany for another 3 years and about 80K miles...........so I'll probably ignore for now.

Truck seems to be running a lot better. I've got a small "skip" just before I come to a stop and rights as I go to take off. I'm guessing that #1 is still acting stupid. I only replaced #3. I should get another blance rate test done this week and then go from there.