ruff idle still
 

Well my truck is still idling ruff. I got a new under the valve cover harness and tried a new icm and im still having ruff idle. When I start the truck up cold it idles perfect. Is there a way to adjust the tunes so it idles like that all the time? When it gets warm is when it idles bad.
99 F350 DUALLY 4*4
STAGE 2 SINGLE SHOT injectors by Rosewood
Magnum intake
whissling wheel
exhaust
Guages
rebuilt fuel bowl
New ip sensor
New valve thingy on hpop pump
New alternator
I have the fu chip with custom tunes. Please help I have had nothing but issues with these single shot injectors.
also my dad was following me and said when I let go of the gas it blows a puff of white smoke.

Just guessing, blown injector gasket, bent push rod, valves not seating all the way. My uncle said he has a blown injector gasket because of all the gunk built up around that injector. Any truth to that...:shrug:

I think I have the same issue (minus the white smoke) and I JUST replaced the cps with the black one from riff raff. I'll see how it runs when I leave work. It did stumble under light acceleration, but pulls very good under firm acceleration. So just in case I'm doing pricing for rocker arms, push rods, and valve springs.

My uncles 99 F250 did puff out clouds of white smoke under normal accleration but would clear up if he got on it. Then he went to start it one day and you could hear a open vlave. He pulled the valve covers and a push rod (or half a pushrod) was laying on top. After he replaced that one, another one broke and a rocker arm. So he just replaced every one of 'em.

Try running some tests on the engine and see if you get any codes...that'd be a good place to start.

Does anyone have a video of a 7.3 idling with air in the fuel lines? Im wondering if i have a leak in the fuel line and thats why it idles funny. Just a guess. I did the fuel tank mod and it has a inline filter.

After I installed a new black cps my truck ran much better, but now its back to its old ways...stumbling on accleration and a miss at idle. I unpugged my ICP yesterday and the miss at idle was even more noticeable. So I'm thinking IPR or IDM. Have you tried letting it idle with the ICP unplugged? Maybe we have a related problem.

I'm buying AE from PHP next month and hoping it can help me find the issue.

Ok finally pulled my injector Rosewood diesel will inspect my injector even though my warranty is up. While everything is open what do I need to look for. What am I looking for in the cups etc. I started the truck up with the valve covers off and there was good blowby that I could see. What is expectable etc. Anyone have a video?

Acceptable is when you can remove the oil fill cap and you don't see individual "puffs" of crankcase vapors.

The pressure of the vapors should not be enough to lift the cap off of the filler tube when placed upside down. It may vibrate off of the filler tube, but it shouldn't be blown off.

Ok then its fine what am I looking for in the injector holes?

I spoke to Rosewood he thinks its the tuning but will check the injectors for me

And what is there is enough pressure to lift the cap? I was at the dealer a couple of months ago to do the brake sensor recall and I asked him (the diesel tech) about my idle. He said it was from cylinder wear due to a "bad" filter (AFE). He then pulled my oil fill cap off and showed me the crank case vapors...it looked enough to lift the cap but I haven't tried..yet.

There is ALWAYS going to be some amount of blowby. That's what PCV and Crankcase Vents are for. The concern is not necessarily how much blowby you are getting (of course there can be too much), but whether or not it is a smooth stream (like blowing through a straw) or coming out in puffs (like making a motorboat sound with your lips). Uneven blowby indicates unusual wear (or worse, piston/ring damage) on a particular cylinder. This would also be evidenced by a compression test, but this is the poor man's way to identify possible engine problems.

That's my kind of diagnoses:cheesy smile:

My blowby was even. I always thought the idle of a 7.3 with a good bit of cylinder wear would be like my 96 250k with 650k mi. It idles up and down in a uniform fashion. My truck now has a random hick-up...mainly after its warm. I've read where a lot of other guys on the forums saying they fixed the same issue by finding and fixing bad injectors o-rings. And unless it becomes a must to fix, I'm gonna wait it out until I replace the injectors.

Thanks Bill, good to hear you

I talked to Mr Rosewood and he straighted that my injectors tested out completely fine. Bill I was hoping you could tweek with my tunes and see if we could fix my idle issue. The injectors are out what should I look for in the hole? Bill I have a video of the idle if you need it.
Thanks Eric

I put the injectors in still have a ruff idle. Im sure im getting over fueling. Bill I was wondering if you could tweek a tune so I can try to see if that fixes it. Please help im starting to get really pissed.

Can I get help please? ? My truck is the main car for my baby and wife.
Could I get a tune that is tweaked so I can see if this fixes it. Also you can smell fuel when it idles but no smoke.

http://i670.photobucket.com/albums/v.../VIDEO0016.mp4
idling
http://i670.photobucket.com/albums/v.../VIDEO0012.mp4
driving up a hill

Do you have a Phoenix or an FU2? I can't find a server file with your original invoice number although I do have the original number for the Phoenix.

I have the fu chip sure its an fu2 because of the custom tunes
I have never had the phonixs one.

Rosewood Diesel Shop
I have the converted single shot stage 2.

You're going to see an additional 80DD file in your drop down menu for the custom tunes. It will be followed by "_v2" in the list. Try that out and let me know how it goes (don't forget to program all 6 slots on the chip though).

Your a gentleman and a scholar ty!! I will let you know.

What ever you did made a big difference. Im going to drive it to work tomorrow to make sure its all good. Cody what ever you did could you go just a little bit more and maybe try one more tune? Let me know what your think cody.
oh and I can switch it to the old daily driver and feel the ruff idle .

Yeah, you can switch it all you want. No harm there.

Instead of changing all six tunes at once, I will work with the one (or two) until it's running smoothly. THEN I will apply those changes to the rest of the programming (saves a lot of time that way!)

Let me know how it drives to work. :cool:

It drove great cody. I had the ac on pulled up to a light it was nice and hot. The idle was good not shaking the truck like it was but it seemed it was trying to idle like it was very lightly. I would like one more of whatever you did and will compare both tunes. Is there anything specific I should look for cody?

Try it again. I did all 6 tunes this time (v2 files).

I pulled up the the tunes and clicked refresh cal list. List looked the same so I loaded the tunes and clicked burn. First tune burned then said error tune not available contact power hungry or something like that :-). What am I missing cody?

Also cody im looking for a tune like the 80dd tune but with firmer shifts. It seems that if I hit the gas hard at 65 or 70 it want to shift out of over drive. Also have lots of mountain hills. Will the 100hp race tune do that? Or any race tune? I have heard of people using the race tunes as a Dd because I do alot of freeway driving and the race tunes get good fuel economy with freeway driving.

Ps she's driving and idling awesome.

Cody? ? Lol said I had to use five characters :-)

What?

"Driving and idling awesome" is the last I heard.

Try it again.

Did you read post 22 I will try loading the tunes again.

Yes. A few times waiting for a response from you.

The 4-3 downshift at anything below 72-74 MPH is normal. That's the way the factory shift points are set up and those are the shift strategies that the daily driver tunes use.

The "race" tunes will do that too...and even more so in some cases because the downshifts are commanded at an even lower accelerator pedal position for a given road speed.

The "economy" is purely relative and subjective. Maybe, maybe not. Buying something for mileage is a sure way to never recoup the money invested.