| From | Message |
Bill
12/06/2002
22:03:24 |
 Subject: n14 cummings
Message:
i have a 1997 n14 cummings electronic and am wondering if it can be converted to mechanical and cost and maybe where to go get the parts thank you
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Terry Wermerskirchen
12/24/2002
14:50:30 | RE: n14 cummings
Message:
Bill,
I had three N14's, the first was in a 91 Pete, 410 HP, the second in a 93 Pete, 430 HP. These two were both STC (mechanical injection) engines. The third one was in a 97 Pete, 500 HP, electronic. Of the three, I liked the electronic the best - it started better in cold weather and got better mileage than the other two, a little over 7.1 MPG vs. 6.3 and 6.6 for the STC engines. The electronic engine was a bit noisier at idle, but once you were going down the road, there was little difference in the noise level.
You should be able to convert to STC, but I don't think the cost would be justified, especially when you consider the increased fuel consumption. As for the actual dollar figure, I have no idea, but it isn't a bill I would want to face. Your local Cummins dealer would be able to tell you a lot more as there may be regulations in effect that prevent you from converting it if it is still going to be used on-highway. If you're planning to max out the fuel delivery, or put a stinger in the pump, you can count on much reduced engine and component life.
Just my two cents worth.
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Mark
4/24/2003
22:20:51 | RE: n14 cummings
Message:
I have a electronic n14 turned up to 460 hp, but we were told it was missing some kind of air sensor that restricks hp by 25% if not installed. The truck runs out of power climbing small hills, is there a different turbo or? to make it up the hills.
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Mark
4/24/2003
22:20:57 | RE: n14 cummings
Message:
I have a electronic n14 turned up to 460 hp, but we were told it was missing some kind of air sensor that restricks hp by 25% if not installed. The truck runs out of power climbing small hills, is there a different turbo or? to make it up the hills.
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Terry Wermerskirchen
4/25/2003
00:50:42 | RE: N14 Cummins
Message:
Mark,
It's probably the Intake Air Temperature sensor (IAT) that is missing. The computer will change the timing and fueling rate based on the temperature of the air coming into the engine. Because the computer cannot get a true air temperature when the sensor fails or is missing, it simply defuels the engine to ensure that no damage is done by over-fueling when temperatures are not at proper levels.
Another sensor that can cause problems when missing is the Manifold Pressure sensor. During periods of low boost, the fuel rate is cut back because there is less oxygen available for combustion. If this sensor is missing or faulty, the computer keeps the fuel rate low so that smoke and excessive emissions are not produced, not to mention to keep the exhaust temperatures down to a safe level so that things don't start to melt.
As for the cost of converting to STC, it would be high. You would need different injectors, and a different fuel pump. There is also a timing controller that would need to be installed. What the cost would be to convert, I don't know, but it would be far cheaper and much more efficient to install the missing sensor.
I am a little curious as to why a sensor is MISSING. I can understand a sensor malfunctioning, but the fact that it is not there at all makes me wonder a bit. At present you're probably only making 325 - 350 HP, but the bad part is that your fuel mileage is probably in the toilet right now too. With today's fuel costs, keeping your fuel cost down is going to be the key to success. Electronic engines are able to get the most out of a given amount of fuel. Efficiency translates into reduced cost, which translates into greater profit.
One other thing to consider: Fuel system problem diagnosis. Electronic engine fuel problems can be diagnosed faster, easier, cheaper and more accurately than for mechanical injection systems. With the electronic engines, it only takes minutes to get a readout of any problems, and the cost would be around $40 or so. Mechanical engines need to have temporary fuel flow sensors installed, and the truck has to be operated under a load. The only way have it hooked up to the necessary monitoring equipment and operate under load is to do a dyno run, which costs about $200 these days if I've been hearing correctly.
To make a long story short, replace the missing sensor. It'll be the best for your engine.
Good luck!
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WILLIAM
7/01/2003
11:44:19 | RE: n14 cummings
Message:
I have a 500 hp N14 with 810,00 miles and it has developed a ticking nose that comes and goes. I had the overhead set the injectors flushed and the Cummings Repair shop said everything was within specs. You can rev the engine to 1500 rpm and not hear the noise or at idle. The engine runs perfect has good power and uses no oil. The noise is most noticable when under a heavy load and starting to accelerate. It only does it for a few seconds most of the time,somestimes a little louder than others, but always goes away. Any help with this is greatly appreciated. thanks
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charlie
8/23/2003
23:13:57 | RE: n14 cummings
Message:
What was the most factory rated horsepower the
N-14 with a mechanical injection pump ? Thanks
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ernst
9/02/2003
12:17:47 | RE: n14 cummings
Message:
I have a N14 that was parked for about a month.Iwent to move the truck and 1)the RPM will not go past 1500, 2)the jake brake dont work, 3)engine shut off blinks and the engine cuts off every about 2 or 3 minutes. The truck is 1994 and the dealers around dont have the computer with the proper fitting. Please help. The engine is a 375e upgrade to 410e
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alex
9/04/2003
10:19:12 | RE: n14 cummings
Message:
I'm buying a n international with a n-14 esp 370 490k miles ,it has had new injectors ,a new head ,and the pump recalibrated ,this engine should be good for many more miles ,and what kind of mpg should I get?
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chris
10/17/2003
08:57:27 | RE: n14 cummings
Message:
i need to know the torque specs for the head and the jake brakes
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Remo
11/18/2003
14:53:28 | RE: n14 cummings
Message:
I have an n14 460hp electronic with around 800,000 miles. I've had complaints that it's a dog on the hills and it looks like I'm getting about 3.5 mpg. I just had it tuned up and it seems to be running fine. I can't figure out the terrible fuel mileage. Any Ideas?
Thanx.
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alex
11/18/2003
22:36:45 | RE: n14 cummings
Message:
How do I find out the torque of the heads ?, I have driven this truck for a month, an am getting around 7mpg, can I do better?
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Shaun
12/04/2003
01:11:59 | RE: n14 cummings
Message:
I have a n14 500hp is there a chip that I can buy to up the hp alot!!! Let me know what i can do. Thanks.
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Darryl
1/08/2004 22:01:17
|  RE: n14 cummings
IP: Logged
Message:
we have a n14 engine in a KW and it will run ok on start up . but once it warms up and is run under load for a while it cough's /barks /smokes bogs down and die's.
than when you start it up it idles and does it at idle or if you step on the throttle bogs out and dies.
ive checked for loose fuel lines , air leaks in the air to air .
i'am still searching for broken wires .
there's also a 20 amp fuse hooked into the harness but no one seems to figure out why it there.
and it will blow the fuse and run like i explained .
but if you replace the fuse it runs great , until the fuse blows
so what should i look for
thanks
 
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Darryl
1/08/2004 22:01:19
| RE: n14 cummings
IP: Logged
Message:
we have a n14 engine in a KW and it will run ok on start up . but once it warms up and is run under load for a while it cough's /barks /smokes bogs down and die's.
than when you start it up it idles and does it at idle or if you step on the throttle bogs out and dies.
ive checked for loose fuel lines , air leaks in the air to air .
i'am still searching for broken wires .
there's also a 20 amp fuse hooked into the harness but no one seems to figure out why it there.
and it will blow the fuse and run like i explained .
but if you replace the fuse it runs great , until the fuse blows
so what should i look for
thanks
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kevin
1/13/2004 16:22:23
| RE: n14 cummings
IP: Logged
Message:
Sounds like the ecm is getting a short or the power feed to the ecm is shorted
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Pete
1/15/2004 20:51:19
| n14 cummings oil pressure problem
IP: Logged
Message:
I have a problem with the engine oil pressure the pump has been check and there is nothing wrong with it. The problem is the oil pressure won't stay constant to a 12pressure it drops to a seven and stays there. The truck turns on but the oil seems to fail everytime. They check the heads of the motor and there fine. The computer reads that there is no problem. It's this simple the oil pressure will not rise to what it has to for the truck to function at normal perameters. If any one call tell me what the problem is e-mail me as soon as possible. My mechanic is trying to cheat me so i want to be one step ahead of him. If anyone has had the same problem or knows someone that did please contact me at the e-mail address your input will be thanked.
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VINNIE
2/06/2004 19:26:29
| RE: n14 cummings
IP: Logged
Message:
HI CAN YOU TELL ME HOW THE NEW ELECTRONIC ENGINE CONTROLS WORK MEANING DISCRIPTION AND OPERATION
AND ARE ALL THE CUMINGS ENGINES THE SAME
I AM WORKING ON A YARD TRUCK THAT HAS A BAD HESITATION THANK YOU VINNIE.
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alex
2/06/2004 20:53:17
| RE: n14 cummings
IP: Logged
Message:
I replaced the o rings on the oilers ,I had a leak problem ,will this be for a long while ,and will I get better oil pressure?, Alex
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eberhart
2/06/2004 21:45:41
| RE: n14 cummings
IP: Logged
Message:
to ernst:
The blinking light is telling you a fault code for the engine...read the flashes....flashes...space....flashes...maybe 2 or more codes....some engines u need to hold the cruise control switch on "resume" to read the codes. Talk to a knowledgable dealer on your particular truck, he can decipher the codes.
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darrain loomis
2/16/2004 19:57:45
| RE: n14 cummings
IP: Logged
Message:
iwas wandering what the torque specs for a n 14 cummins heads
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darrain loomis
2/16/2004 19:59:56
| RE: n14 cummings
IP: Logged
Message:
iwas wandering what the torque specs for a n 14 cummins heads
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darrain loomis
2/16/2004 20:01:02
| RE: n14 cummings
IP: Logged
Message:
iwas wandering what the torque specs for a n 14 cummins heads
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Dennis Foy
2/18/2004 20:56:57
| RE: n14 cummings
IP: Logged
Message:
I'm searching for a fuel pump for a 400 cummings, turned up to a 450. Its in a 1989 freightliner FLD120. Its hard to start, at times I have to use starting fluid, once it starts its fine. Do I need a new fuel pump? Do you have suggestions on fuel pumps? I need to know ASAP
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alex
2/23/2004 20:30:27
| RE: n14 cummings
IP: Logged
Message:
I just put a new turbo on y n14 460e and now the boost is up to 35 to 40 is that normal or is it to high I called 3 dealers and they siad it was fine but my mech. says its to high does any one have a n14 460e and could you tell me what your turbo boost is at thanks.
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Carr
2/26/2004 15:18:54
| RE: n14 /n11cummings
IP: Logged
Message:
I am pursuing auto mechanical engineering studies, how or where could I get text books on cummings engines; n11, n14 in particular? Living in Caribbean,but would want to buy it in Canada or have it shipped.
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Terry
3/04/2004 15:02:51
| RE: n14 cummings
IP: Logged
Message:
Has any persone had problems with the inner seal on the LF3000 filter staying behind when replacing the filter.
My problem cost me a new engine as the old seal that stayed behind went through the oil passage and got stuck just befor No 5&6 main bearing.
The engine is a N14 selct + 460
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Terry
3/04/2004 15:12:18
| RE: n14 cummings
IP: Logged
Message:
Has any persone had problems with the inner seal on the LF3000 filter staying behind when replacing the filter.
My problem cost me a new engine as the old seal that stayed behind went through the oil passage and got stuck just befor No 5&6 main bearing.
The engine is a N14 selct + 460
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bill
3/16/2004 23:21:37
| RE: n14 cummings
IP: Logged
Message:
torque on heads and jake any info whould be helpful thanks.
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Terry W
3/17/2004 01:11:23
| RE: n14 cummings
IP: Logged
Message:
Let's see, where do I start?
Darrain and Bill: Sorry, I don't have those specs available, but would provide them if I had them. I recommend you check with Cummins. They will either sell you a shop manual, or might even photocopy a page from the manual for you.
Alex: I had an N14 450e - it typically ran boost right in that range. You should be ok.
Dennis: At what temperatures are you having the hard starting problem? Is that a Big Cam III 400? If I remember correctly, that was a lower compression engine. I had a late 70's IH with the old NTH 400 in it, which was also a low compression engine. If you walked past it with an ice cream cone in the summer time you needed a can of ether to get it started. The Big Cam III and Big Cam IV engines were hard starting in cool temperatures, 40 degrees and below, but they would usually start without ether. If it got below 20 degrees it was a different story though.
Carr: Your best bet for Cummins manuals would be through a Cummins dealer.
Terry: That can happen, although it is the exception and not the rule. The rule to follow is this: When you remove an oil filter from an engine, no matter what filter it is, ALWAYS check to make sure that all of the gaskets have been removed from the filter housing before installing the new filter. Obviously, you have learned that lesson the hard way. Sorry to hear about your streak of bad luck.
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Kirk
3/18/2004 00:11:28
| RE: n14 cummings
IP: Logged
Message:
at times I get a throtle dely and them other times I dont. Some of lthe time I can tell by how the motor sounds, of when it is going to do it.All of the perimiters have been cleared and re-set, and it still does it. It is not the most fuel economic 5.5 is the average that I ge.Oh the TPS has been replaced 3-4 times and that is not the problem PLEASE HELP!!!!!!!! Kirk.
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alex
3/20/2004 08:16:23
| RE: n14 cummings
IP: Logged
Message:
I now have 530k on the cummins n-14 esp plus, I seem to have no problems ,but am having hard starting in colder weather ,is it the starter, or should I stay south like I usually do.
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alex
3/20/2004 08:27:16
| RE: n14 cummings
IP: Logged
Message:
I may replace the starter , the alternator is fine ,and the batteries r new ,I keep the antifreeze to minus 28, I don't know what to do ,A starter is only 195 rebuilt.
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RAFAEL
Guest
3/27/2004 17:37:08
| RE: n14 cummings
IP: Logged
Message:
HOW DO I GET A N14 370E 370HP TO A 30 HP OR SO, I WILL LIKE TO PGRADE, BECAUSE I HAUL A LOT OF HEAVY LOADS. ANY HELP WILL BE GREATLY APPRECIATED.
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RAFAEL
Guest
3/27/2004 17:39:54
| RE: n14 cummings
IP: Logged
Message:
HOW DO I GET A N14 370E 370HP TO A 430 HP OR SO, I WILL LIKE TO UPGRADE, BECAUSE I HAUL A LOT OF HEAVY LOADS. ANY HELP WILL BE GREATLY APPRECIATED.
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dusty allen
Guest
4/08/2004 23:24:40
| RE: n14 cummings
IP: Logged
Message:
i have a n-14 turned up to a 460 and i,ve been fighting a injector problem
it came in one day and #3 was dead then it came in yesterdayand #6 was dead. So i put my e-check on it and i can get it to bounce back and forth between several difrent wholes but there is always a fuel knock i think ecm or eps ?
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robert santarelli
Guest
4/19/2004 09:39:11
| RE: n14 cummings
IP: Logged
Message:
Im looking for a n14 mechanical engine anyone know of any around?
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Rex
Guest
4/20/2004 22:35:34
| RE: n14 cummings
IP: Logged
Message:
I have a 90 pete with N14, I have the two engine brakes switches on the dash and one on the gear shifter, but I have no engine brake, any combo of the switches still doesn't makes it work, where do the wires go to so I coukd check to see if it is hooked up, I t is a long haul truck, just converted to a 10wheeler dump truck.
thanks
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keven
Guest
5/16/2004 15:28:20
| RE: n14 cummings
IP: Logged
Message:
I have a buddy with a 1997 kenworth T-600
with the N14 cummings and his injectors are going bad....
Is there a rebuild kit for these items or how can we rebuild these?
They are fairly simple to replace with fresh rebuilds but they are $330 for each rebuilt injector.
After removing and replacing 5 and 6 injectors there dos not seem to be much to these injectors... There must be a way to rebuild them myself...
thank you for your time and quick response.
Keven
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Peter Lamphier
Guest
5/30/2004 15:52:11
| RE: n14 cummings
IP: Logged
Message:
I have an n14 in a 94 pete..runs fine during the week if it sits more than 12 hours on weekend it will start and idles rough and will not accelerate ...if you let it idle until the air pressure is built up and shut it off and let it sit for an hour it will start up and run fine....do you have any suggestions what could be the cause of this and solutions to it???thanks Pete
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nicolas diaz
Guest
6/06/2004 22:50:36
| RE: big cam iv
IP: Logged
Message:
Quiero hacer una reparacion general del motor cummins modelo dig cam iv, que marca oem me recomiendan mas economicas que cummins y direccion electronica donde los pueda conseguir.
gracias
Nicolas Diaz
Callao-Peru
ndiaz100@hotmail.com
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Brian
Guest
8/26/2004 20:29:56
| RE: n14 cummings
IP: Logged
Message:
I was wondering where I could find a mannual for a N14 Cummings engine?
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alex cheilik
Guest
8/29/2004 20:01:16
| RE: n14 cummings
IP: Logged
Message:
I have replaced the starter ,the solonoid, and the alternator, and now have noticed ,my truck with 575k on it ,is leaking oil ,thru the cam followers ,can this be fixed ,or can i just tighten the bolts?
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Roel Saldana
Guest
9/07/2004 19:25:02
| RE: n14 cummings
IP: Logged
Message:
Torque on Heads for a N14 Cummings 500hp and how run the rack?
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Roel Saldana
Guest
9/07/2004 19:25:13
| RE: n14 cummings
IP: Logged
Message:
Torque on Heads for a N14 Cummings 500hp and how run the rack?
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chad betland
Guest
10/17/2004 04:23:44
| RE: n14 cummings
IP: Logged
Message:
what other hopups are there for the N14 besides
the pitsburgh power box ,are there any fuel codes
or something thanks chad.
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tdutton
Guest
10/27/2004 19:41:21
| RE: n14 cummings
IP: Logged
Message:
dont cummings have a fault code list that i can obtain so when i run self diagnostics ill know what code 143 is?????ect
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alicija
Guest
10/31/2004 15:35:52
| HELP!
IP: Logged
Message:
Hi,
I would so much appreciate if anyone can let me know where I can purchase a rebuild N14 Cummings. Our guaranty National Truck Protection refuses to pay for replacing the whole engine, and we are looking for other possibilities while suing the company. Thank you so much!
Alicija.
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Casey Parker
Guest
11/11/2004 15:18:58
| RE: n14 cummings
IP: Logged
Message:
I have an oil leak on the drivers side of the engine I can see where it is coming, from behind a plate bolted to the side of the block. I am a little short on funds at present how long can I go on this leak if I maintain oil level, Oil presure is fine.
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Bob
Guest
11/15/2004 11:32:34
| RE: n14 cummings
IP: Logged
Message:
I have a wierd one. 2001 Int, N14 the check/ service engine comes on at start up. It blinks 3 five times. Int has no answer and cummins has never heard of this. Has anyone had this?
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Paul
Guest
12/29/2004 20:01:17
| RE: Big Cam Four Cummings 350
IP: Logged
Message:
HELP - I own a 1986 Pete with a Big Cam Four Cummings 350 a low flow system. I have replaced everything you can possibly think of, water pump, therom., heads, gaskets, raditor and it is still running hot. Can not get any help from Peterbilt or Cummings on getting any information they tell me it's too old. Can you help me?
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