a "tune-up" is a valve adjustment in Diesel terms.... and i usually fill my new filters with ATF ... and run about 1/2-1qt per fill up ... extra lube and it does help mog a little bit ...

been running that for about the last 5 yrs in my IDI ford ... i was shocked when i pulled the heads and all was really spotless ... i also run 1 gallon of "dry" waste oil per 10 gallons on a fill in the ford .. no smoke but does seem to pick up power ... WIll be running 3 types of fuel on dyno to prove that it works....

 

I think timing could have slipped, it's a reasonable possiblity, and mentioning that the turbo has 1mm of axial and radial play, could be another problem (you shouldn't feel the axial play (in and out) at all, that is a tight tolerance. and it could be the reason the turbo is surging more as well.. it won't be delivering the airflow as well either which will give you your EGT's, but it wouldn't explain a lower idle... the timing slipping to 8 degrees or worse could still have happened.

How does the truck start in the morning? if you find it fires up easier than usual, that could be slipped timing as well.

I would first look for boost leaks (you'll usually hear them if they're bad), but go over all the hoses, etc... the intercooler boots often will rub on the inner fender and get cut on there.
Next, check your valve lash
Then the timing.
by then it should be idling smoothly where it's supposed to be.
if it still has trouble boosting and that turbo indeed has the axial play you say it does, I'd get it looked at before it pukes oil into the intercooler and your engine runs away

 

Ok. Timing was off 8 degrees. I had it retimed and checked for boost leaks and fp. FP was good boost good. Runs a little better now. EGT gauge is bad, false readings. On another note unread another thread about my similar problems In that thread said that the power loss I was experiencing could be a result of badly adjusted Gov. Springs. This Same problem could also account for my idle not being able to stay constant as well as my powerless. My only other option as far as that is concerned I guess would be to have the governor springs recheck by another shop who can look at them without taking the pump out. I was trying to towa load today was a flatbed 16 foot trailer had a miniature backhoe on it probably weighd around 9000 pounds in total and I didn't have a whole Lotta power, telling you probably couldn't get past about 50 miles an hour if I wanted to. the motor would wind up and Boost would go it seem like it was trying to get more power but the truck want to go any faster. I had the valve lash adjusted about six months ago and I've only driven about 6000 miles since then. The fuel filter oil filter air filter Are all new. The transmission is a fully Built goeren with a tripple disk converter but I bought it used so I didn't know what kind of condition it was in when I bought it.

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To answer the other question the truck starts fine once it's warmed. In Cold weather or if it has been sitting for a while it has trouble starting up right away it will blow little white smoke, idle little rough for a few seconds then it will be okay

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To answer the other question the truck starts fine once it's warmed. In Cold weather or if it has been sitting for a while it has trouble starting up right away it will blow little white smoke, idle little rough for a few seconds then it will be okay

 

ok ... silly question .... has anyone checked your fliter/pre-filter in the bottom of the lift pump ? ... this little monster can cause all kinds of trouble ... if is also worth mentioning that a bad return valve will suck the power out of the truck by allowing loss of fuel pressure ... how much timing are you running ?

 

There is a Small leak in the fuel return line! Im not sure about the pre filter, Lift pump has about 4kmi on it

 

could be plugged and choking fuel flow ...

 

I doubt it, I've had the fuel pressure checked and double checked by 3 different shops in the last 3 months, all said it was perfect. After adjusting the timing (back to stock) the truck defiantly has a bit more ooomf from about 55 on up and at highway speeds. It top ends almost at 90, but still lacking on off the line. Occasionally when I jam the pedal from a gentle roll it will rev up a bit, then its like the throttle position sensor realizes what I'm trying to do and locks up the TC or downshifts for me. From other videos I've seen with the same modifications as my truck, my truck should have a way faster 0-60. When I get on it, off the line, it jumps rpms and boost, but when it shifts its almost like there is no gear ratio change. Is this the TC failing to drop to lower rpms before locking up. This problem is only occurring when towing (it behaved like the TC wouldn't even lock up at all), or from a stand still and low speeds, and occasionally when climbing hills at moderate speeds (45mphish) Also when I lightly touch the pedal from a stop sometimes its like the TC is already locked and ready to go and it's real torquey and good, and sometimes the rpms will slide up to 15-17 maybe 1800 before a the full torque of the truck is felt. Could this be a TC problem (still confused as it is a tripple disk that has seen no more than 500hp) although it did drive a short time with a stock vavle body on a goerend transmission due to the shop thinking the goerend VB was bad and so I had to send off for a new one. Could this have kept efficent fluid flow to the trans and messed it up? I'm just sick of my truck not running like it's supposed to, it also seems like no matter what I adjust my idle to, it will always drop to 650-670 in gear, and then sometimes vibrate. My gut tells me I either have a cracked flywheel or bad tc, maybe coupled with a failing IP (maybe poorly adjusted gsk) , in which case im screwed because that's about 4k worth of repairs. So with all that said…what now? I need to recheck the shaft play on the turbo, but i don't think there is any at all, I was over exaggerating with the 1mm, I don't think it moves at all

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Ok finally. HERE IS A VIDEO. apologize for the language, some idiot was driving into oncoming traffic. Towing an empty 16 ft flat bed. It does this under wot empty. I am accelerating from a stop at about half throttle.


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0-60 no load

 

Anybody?

 

What is your star wheel adjustment like ?

any smoke ?

the 0-60 .. NEEDS SOUND ... i cant tell from the viedo alone my friend ...

 

what exactly is your issue? the top video is about normal. @ about 45 they want to be in OD which sucks for towing. i suffer from the same problem and plan on bumping up line pressure when the temps get warmer.