quasi-kill

[Atilla the Fun]

Can diesels have lean misfire? It seemed like that's why I had a Duramax fail to beat me across a traffic light. Score a win for the '85 Ford 3.8L V6!

[crzyone]

Diesel's can not run lean. They don't have a throttle body, the only thing controlling throttle or how much power they output is the amount of fuel injected into the cylinders.

It's more likely he ran too rich. If it's a mechanical injection diesel, if you floor it from idle it will run rich before the turbo spools up. That's why you see diesels bellowing black smoke all the time, injecting too much fuel for the air available. Once the turbo spools up it usually goes away.

[The Dark Side of Will]

It's more likely he ran too rich. If it's a mechanical injection diesel, if you floor it from idle it will run rich before the turbo spools up. That's why you see diesels bellowing black smoke all the time, injecting too much fuel for the air available. Once the turbo spools up it usually goes away.

Duramax has been a common rail engine from the get-go. They are electronically managed and shouldn't smoke at all (well... maybe a tiny bit).

[crzyone]

Depends if it's been chipped or not. I've seen some pretty smokey Duramax trucks at the strip.

Not sure if they have traction control, and what that would do to the injection when it senses tire slip? Maybe that's what happened, the ecu pulled fuel?

[Atilla the Fun]

Hmm. I still have alot to learn about diesels. I've machined Cummins parts, but that's not really diesel specific.

[The Dark Side of Will]

We have a couple of Powerstroke Excursions here (one of them is bright metallic green and armored) and they are very slow off the line when cold. They don't run rough... they just don't move. It seems to be an engine management issue, although I can't really see it being any kind of protection routine to keep it from hitting boost when cold.

[Indy]

My brother-in-law's Powerstroke F-250 is the same way. It simply will not accelerate if it's cold. My father-in-law has another F-250 that's exactly the same package and same year, but doesn't seem to suffer from the same problem. I can accelerate decently off of the line even if it was just started 30 seconds ago.

[Atilla the Fun]

That's the way my '83 6.2 diesel is. It'll accelerate just fine right away. But it's pre-computer.

[Atilla the Fun]

2 more kills for the LTD yesterday, a Cummins 5.9-powered Ram 2500 with a manual trans, and a Dodge Neon.
I only beat the Neon by a bumper, but a kill is a kill. I've got this 3.8 pretty well tuned. I'm hoping to find a set of the HO heads from the Police Taurus that I can port and swap on. Then get the manifolds Extrude-Honed. I'm also thinking of a bit more rear gear and a custom cam. As soon as I heat the HO heads found, purchased, ported and flowed. Out to be a surprising little sleeper at that point, especially when they see a stock-looking TBI V6 instead of a built-looking V8.

[CincinnatiFiero]

I'd spend money on your Fieros. LS Fiero > 200hp LTD

[Atilla the Fun]

You make a good point.
Please consider this: The Police Taurus wasn't the only thing to get the good heads. And I might go to the salvage yard and not find any of the Fiero stuff I hope to find, but I might find the good heads.
Would it not then be wise to spend the $60, rather than return 100 miles home with nothing at all?

[Emc209i]

No... it wouldn't be wise.

[Atilla the Fun]

Sorry Emc209i, you'll have to repeat whichever grade you're in.
The trip is an outright loss of time and gas if I were to return home with nothing.
I may not sell the heads right away, and I may not make a big profit on them, but I can get some return on my investment, eventually. And considering the way things are going in the world of finance, this is still a safer investment.

[CincinnatiFiero]

What kind of power can you gain from the HO heads? Do they bump CR or just flow more?

[The Dark Side of Will]

Is it worth the 200 mile round trip on the possibility of picking up 5 HP on a Taurus?

[CincinnatiFiero]

We have a couple of Powerstroke Excursions here (one of them is bright metallic green and armored) and they are very slow off the line when cold. They don't run rough... they just don't move. It seems to be an engine management issue, although I can't really see it being any kind of protection routine to keep it from hitting boost when cold.

This has to do with timing, it's the only reason my mercedes has a computer, that and "anti-jerk" whatever that is. It can retard the timing while the motor is cold. It supposedly is easier on the motors. You can floor a Mercedes after just starting it in the winter and it just sort of starts to move away not really. Once you are above like 40*C though it lets you have the normal timing. VWs don't retard the timing so they are always fast, however this puts more wear on the motor when they are cold, so they don't last the 500k miles that the benzers do. My much older jetta has a mechanical advance lever you can use to warm the motor up easier, but if you drive with it the lever on you'll fuck stuff up in a hurry.

[The Dark Side of Will]

I was thinking it was something like that.

Solution is just to let the damned engine warm up like you should.

[CincinnatiFiero]

If I don't have to be anywhere in a hurry I pre-glow extra long and let her idle for a couple minutes. Extra-preglow is harder on the battery, but prevents misfires because my glowplugs are getting old.

[Emc209i]

Sorry Emc209i, you'll have to repeat whichever grade you're in.

I believe it would be the 17th grade by any standard. You finish any of your ghetto projects yet?