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Author Topic: 8V92 Kicker  (Read 3706 times)
PCC
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« Reply #15 on: February 16, 2010, 07:32:50 PM »

What a brilliant idea - See if it is blowing bubbles.   Sounds like fun !!

How do they get past the separator? or are they coming into the lines after that?
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Just Dallas
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« Reply #16 on: February 16, 2010, 07:55:39 PM »

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« Last Edit: July 15, 2010, 11:35:42 AM by Now Just Dallas » Logged

I'm just an old chunk of coal... but I'm gonna be a diamond someday.
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« Reply #17 on: February 16, 2010, 08:20:41 PM »

I have a strange idea. (not my first!)

What if there is a crack in the pickup tube inside the tank, and when the fuel level goes down to a certain level, then the problem begins? There does not appear to be even a chance of a crack elsewhere, as I have inspected the visible lines and they look good, but I am going to work out the full/empty tank option to see if the problem only occurs when the tank is below a certain level.

That would be a real tough one to have found, if it is found to be true, without all your collective intellects coming together to think up such a crazy idea, but that is starting to make some sense to me. So I will try to document tank levels with happenings of the kick.

Higher engine speeds would cause the bubbles to go unnoticed, right?
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hargreaves
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« Reply #18 on: February 16, 2010, 10:02:54 PM »

Please tell me how on an ECM DDEC equipped engine how you can change the engine rpm with a reprogram. As I understand it is preset and non adjustable.    Cheers  Gerry
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now as of Feb 2012 series 50 B400  . Sunshine Coast British Columbia
PCC
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« Reply #19 on: February 16, 2010, 10:18:14 PM »

If nobody answers the question about adjusting the idle on a DDEC ECM before then, I will be talking to a DD dealer about adjusting the idle this morning.

I hate the kick, and it concerns me, because it feels like it will let me down one day, and, if the usual takes place, it will be in the middle of Hollywood and Vine, on 42nd Street, or during rush hour in the middle lane on the Interstate.
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« Reply #20 on: February 17, 2010, 06:08:24 AM »

Quote from: hargreaves
Please tell me how on an ECM DDEC equipped engine how you can change the engine rpm with a reprogram. As I understand it is preset and non adjustable.    Cheers  Gerry

Gerry, Certain people (mostly DD dealers) have computers that are capable of re-programing or changing certain perimeters of the DDEC ECM! Most of US, and your little hometown diesel shops are not able to do this. It is done with a very expensive and complex DD program that is expensive to buy, and hard to get DD to sell you it unless you meet the licensing criteria such as authorized DD repair shop, or certified technician having go through their extensive training program (supposedly to protect them from liabilities and warranties from Joe Blow altering his RPMs, or top speed, yada yada yada, but mostly to keep the $ in the DD loop. IE if the only ones who can change those things, where will all the DIY guys like us have to go? Right to a DD dealer!)
Grin  BK  Grin  (the politically incorrect busnut! Wink )
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« Reply #21 on: February 17, 2010, 10:28:03 PM »

Ya and if I remember correctly its about $200 bucks. I think most are set at 650rpm for an auto trans.   Cheers Gerry
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« Reply #22 on: February 18, 2010, 06:46:28 AM »

First, i'm not trying to hyjack this thread, but do have a question about adjusting the idle speed. I've got a 1955 Scenicrusier repowered with a 8v92ta and 754 allison. Now the 8v92 is totally mechanical. How would i check the idle speed and adjust it. I've got a lot of other things to get done first, but wanted to tuck this info away and have it ready for when that day arrives. THanks,
Mike
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1955 GM Scenicrusier, 8V92TA & Allison 754. Totally rewiring all 12v systems and lots of questions.
PCC
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« Reply #23 on: February 18, 2010, 10:43:33 AM »

The last non ECM controlled diesel I worked on had an idle set screw that could be adjusted to raise or lower the idle, similar to a gas powered engine.

Look where all the fuel lines come together and near there you should see lever/s that move with the throttle, either air controlled, or fully mechanical. There should be a screw there that will move the lever to set the idle speed.

I hope that matches what you have, and this information helps.
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« Reply #24 on: May 26, 2010, 07:50:47 AM »

I just love being able to find a peculiar problem so that a thread can have an end.

When I asked about the kick in my 8V92, I got a lot of suggestions, but this solution might be one for the books.

The previous owner had installed a small inverter and had connected it to the 12V feed (after the shut off). The inverter was failing, and intermittently dropping the voltage sufficient that the ECM would shut down, just for a split second, creating what felt like a problem with the engine.

I found this only when I turned the inverter on one day as she was in slow idle, and the engine kicked. When I turned the inverter off, the kicking never happened, but as soon as I turned it on, it kicked again.

Where you connect does make a difference, and so does the accessory equipment.

Thanks for y'alls help and advice. I so appreciate being able to ask about things.

Keith
PCC
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« Reply #25 on: May 26, 2010, 08:15:54 AM »

OOOHH KAAAYYYY!  And just where is your idle set?  Getting back to the post. Grin Grin Grin

John
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« Reply #26 on: May 26, 2010, 08:38:18 AM »

Nothing has changed with regards to the idle speed, and I have not even worried about it since the kick has stopped.

It sits at a traffic light, or other stop, in gear (automatic), and just purrs, so I am a happy camper.

What is a happy camper? Have you ever known a not-happy camper? What defines 'happy'?

So for what it is worth, I am pleased that it was not something serious in the engine or the fuel lines.

I will have the idle speed checked next time she goes in for service.

Thanks for asking.
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For some, patience is a virtue.
Dealing with me, it is required.
Thank God - He is always patient.
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