Wet stacking a real problem?
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Laughing Gas
Joined: May 2003
Posts: 1,148
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From: Richmond, VA
Wet stacking a real problem?
Now that I know what it is has anyone had any problems with it? Known of anyone that stuck/bent a valve or pushrod or had other damage because of it?
I put Diesel Kleen in the tank and avoid excessive idling should that be sufficient?
Just want to know if it is a legitimate concern or not.
Reg
I put Diesel Kleen in the tank and avoid excessive idling should that be sufficient?
Just want to know if it is a legitimate concern or not.
Reg
Posting Guru
Joined: Sep 2002
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From: Northeastern Pa - USA
Wetstacking is only a problem if you let the engine idle for long periods of time. Dont get your tassle in an uproar if you run into the house to get a different coat of a pair of gloves and come back out. You should nt have a problem unless an injector is stuck on all the time and you see slobber on the downpipe from the turbo outlet. Enjoy the oil burner and take pride in your ride. Bill
Senior User
Joined: Apr 2002
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From: On the farm near Loveland
Wet stacking takes a couple of things to be a problem. First, the engine needs to be running cold. Then you need a long idling time followed by a shut down.
If you drive your truck after idling it for a long time, you won't get wet stacking. The excess unburned fuel goes away. The computer controller in the PSDs is programmed to prevent wet stacking, anyway. If the engine is cold, it ratchets up the idle speed, the amount depends on engine coolant and outside air temperature.
Wet stacking may have been an issue on older technology diesels, but it's almost impossible on a properly-working modern PSD engine like yours.
If you drive your truck after idling it for a long time, you won't get wet stacking. The excess unburned fuel goes away. The computer controller in the PSDs is programmed to prevent wet stacking, anyway. If the engine is cold, it ratchets up the idle speed, the amount depends on engine coolant and outside air temperature.
Wet stacking may have been an issue on older technology diesels, but it's almost impossible on a properly-working modern PSD engine like yours.
Senior User
Joined: Jan 2004
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From: northern Maine
How long is a long time? when one warms up engine when it cold outside, i usually idle it when i start for 10 minutes or so before going to work. never heard of wetstacking kind of worried now. in alaska sometimes when it -45 some people idle all night = some of these people do not have electric. runing house on batteres and solar cells. someyone please answer.
New User
Joined: Jan 2004
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Can idle long time with AIC. Also handy in keeping battery charged up and to warm up, runs about 1250 rpm. Without the AIC the idle is too low and will cause wet stacking which is unburnt diesel collecting on valve stems until a valve hangs and munches a cylinder, not much clearance at TDC with these high compression Diesels. So if you want to keep her running all night buy an AIC from FORD
FTE Leadership Emeritus
Joined: May 2001
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From: Cabot, Arkansas
Re: Wet stacking a real problem?
Originally posted by afinepoint
Just want to know if it is a legitimate concern or not.
Reg
Just want to know if it is a legitimate concern or not.
Reg
shendoa:
If it low idled (650rpm) all night at -45 degrees there is a possibility it could wetstack, but a PSD is going to high idle in that temp, and it will never wetstack while at a 1200rpm idle. You don't really need an AIC, just put a brick on the go pedal.
Wetstacking in modern diesel engines is largely urban legend.
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Elder User
Joined: Dec 2001
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From: Kelowna B.C.
My 99 idles up to around 1200-1300 sitting just sitting there after half a minute or so. So I don't think its much of an issue in newer trucks.
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Senior User
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From: Northern IL
I was a lead mechanic for a very large fleet of trucks. We had 80 PSD trucks among many others. We had let all 80 sit outside and idle all night on real cold nights. Never had a PSD wet stack.
I have seen some people get real paranoid about this, but I personally do not worry.
I have seen some people get real paranoid about this, but I personally do not worry.
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Laughing Gas
Joined: May 2003
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From: Richmond, VA
To sum it up excessive idle without driving the vehicles seems to be the problem.
I was looking at buying a 2000 PSD that had a timer. The owner said he could set the timer to start and stop the engine throughtout a cold night. The idea being to prevent a cold start in the AM. Glad I didn't buy. Sounds like a great way to get into trouble.
So the big rigs we see idling all night at the rest stops are OK so long as they don't shut down before leaving?
Reg
I was looking at buying a 2000 PSD that had a timer. The owner said he could set the timer to start and stop the engine throughtout a cold night. The idea being to prevent a cold start in the AM. Glad I didn't buy. Sounds like a great way to get into trouble.
So the big rigs we see idling all night at the rest stops are OK so long as they don't shut down before leaving?
Reg
Senior User
Joined: Aug 2001
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From: Kentucky
STOP WORRYING ABOUT "WET-STACKING", THESE NEWER ENGINES DON'T HAVE THE PROBLEM, SIMPLY BECAUSE OF THE NEW TECHNOLOGIES ASSOCIATED WITH FUELS, HEAT, ETC. THIS CONDITION WAS A PROBLEM WITH STATIONARY POWER UNITS THAT WERE IDLED LONG OR NOT RUN AT LEAST 70% FULL LOAD. THE HEAT AND HIGHER RPMS TAKE CARE OF THE PROBLEM.
BILL IN KY
BILL IN KY
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Laughing Gas
Joined: May 2003
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From: Richmond, VA
Actually Bill my concerns came after reading an article on wet stacking written by a learned individual refering to todays diesels.
Given the right conditions modern diesel engines can encounter the problem. Technology just makes it harder - but not impossible.
Reg
Given the right conditions modern diesel engines can encounter the problem. Technology just makes it harder - but not impossible.
Reg
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Senior User
Joined: Sep 2003
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From: Miami Beach
I heard from another guy who was a so and so from another engine company that............?
Use an addative, let it idle, and if you are really concerned, simply drive up and down the driveway before you shut it off.
Use an addative, let it idle, and if you are really concerned, simply drive up and down the driveway before you shut it off.
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Laughing Gas
Joined: May 2003
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From: Richmond, VA
I let it idle but not excessively.
In all honesty no engine should be allowed to idle for prolonged periods of time. All engines are designed to work under load and best at a steady speed/RPM. Automotive engines, like all others, toil in the real world which requires idling but that doesn't mean they like it.
Use common sense. They are built to drive not sit.
Reg
In all honesty no engine should be allowed to idle for prolonged periods of time. All engines are designed to work under load and best at a steady speed/RPM. Automotive engines, like all others, toil in the real world which requires idling but that doesn't mean they like it.
Use common sense. They are built to drive not sit.
Reg
Last edited by afinepoint; Feb 8, 2004 at 12:54 PM.
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