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Old 08-31-2004, 11:27 PM   #31
2eyefishclaw
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Re: 98 isuzu trooper buring oil excessively

if you were burning that much oil your Trooper would be smoking like a burning tire.
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Old 09-04-2004, 08:46 PM   #32
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Trooper excessive oil consumption

All, you might want to check out the following link.

http://www.4x4wire.com/forums/showfl...4&fpart=3&vc=1
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Old 09-04-2004, 10:14 PM   #33
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Re: Trooper excessive oil consumption

A piston travels up and down the cylinder and if there is insufficient spring tension on the compression rings the piston rocks and in severe cases the piston skirt will strike the wall of the cylinder, this is commonly known as piston slap.

Although there can be sufficient spring tension to ensure reasonable compression the rocking motion unfortunately releases oil from the upper ring and that oil is burned in the combustion process, leading to a loss of oil from the sump. This process is generally referred to as excessive oil consumption, because it was not the design intention that the oil would be released into the combustion chamber for burning. At higher revolutions the leakage tends to increase, as does the burning thereof.

The 2 stroke engine however, is intended to release oil into the combustion chamber for the purpose of lubricating the moving parts, as it doesn’t have an oil pump to lubricate those components directly, therefore excessive oil consumption would only exist if the oil mixture ratio or oil injection pump were not set correctly and there was too much oil being delivered to the combustion chamber.

BTW paragraph 1 is much the same for a bent rod
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Old 11-29-2004, 07:29 PM   #34
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This won't fix it, but it may help. First put some Seafoam in your crank and run it for a few hard miles. Then change your oil but throw in a quart of Lucas in place of oil. It increase oil pressure and life in my '90 Trooper. I started burning at 30,000 but made it to 120,000 before I swapped out the 2.8 for a 3.4L.
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Old 02-21-2005, 11:26 PM   #35
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Re: 98 isuzu trooper buring oil excessively

Recently recieved this email:

Found the "SEA FOAM" info on this site. I had all but given up on the oil consumption problem on my 2000 Trooper 3.5. Dumped a bottle of the product in my crank case. Drove 100 miles and did my usual synthetic oil change with 10W 30. The oil when drained with the SEA FOAM additive looked and had the consistency of black gasoline. Four hundred miles later and the oil level has not dropped. By now I would be down 1/2 Qt. The Trooper runs smoother, quieter, and seems to have more power. I will follow up with more info at the 800 mile mark. I am impressed. Regards, Jethro
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Old 02-21-2005, 11:39 PM   #36
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Re: 98 isuzu trooper buring oil excessively

Glad to hear that things are running better. Did you also add the lucas? I think they make a type especially for synthetic oil. You'll be very happy. I use it in every car I own.
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Old 03-02-2005, 09:36 PM   #37
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We have a '99 Trooper that used about 1-11/2 quarts between changes(3-3.5k) & I thought that was a lot! Seems my consumption is less than some. I just switched to Mobil1 truck & suv 5w40 because of the additive package it has, it is my oil of choice for my 6.0 Ford diesel also. The first thing I noticed was the noisy lifters quieted down quite a bit. The oil consumption seems to have dropped by about 1/2 quart.
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Old 03-05-2005, 12:08 AM   #38
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Do they smoke?

One point that has been brought is "if it's burning that much oil it would be smoking like crazy". There was never a comment on this.

Could someone that has high oil consumption confirm or deny this?

The reason I ask is because I'm looking to buy a 98 Trooper with 90k miles, I inspected it drove it and I see no apparent problem with it, in fact it seems all great, engine is really clean, air filter is too, I couldn't go as far as inspecting the inside of the carburetor but the seller (private) assured me it uses no oil at all. The idle seems pretty steady and I couldn't get any smoke out of it worm or cold.

Also the seller is not the first owner and there is no way for me to know what if anything was ever done to the car, any pointers as to "what to look at/for"?

TIA
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Old 03-06-2005, 08:35 AM   #39
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Re: 98 isuzu trooper buring oil excessively

My 99 trooper uses about 1qt / 1000K and does not smoke at all. Sometimes when going into overdrive it would put out a little smoke. I've just finished treating with auto-rx and it doesn't seem to smoke any more. I haven't gone lone enough to see if it has stopped using oil. The only problem I've had with the truck was a bad intake manifold gasket at around 50K, and the cluch fan seezed at around 80K. At 98K, I believe my gasket is just now going bad again, appearently a common problem on these trucks. With the design problem on the rings, the only way I could see one of these trucks not consuming oil would be good synthetic oil from the start. In either case not a problem, just watch the oil level. I really like my truck and will try to keep it running well for another 100K.
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Old 03-06-2005, 01:05 PM   #40
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Re: Re: 98 isuzu trooper buring oil excessively

Quote:
Originally Posted by mlingk
....I haven't gone lone enough to see if it has stopped using oil...
Let us know if it does!

Quote:
Originally Posted by mlingk
I really like my truck and will try to keep it running well for another 100K.
That's something else I'd like to know: I see a lot of people saying "I'll keep it running another 100K. Has anyone succeeded? Is there any 98-01 Troopers out there with 150-200K miles without a rebuilt/warranty replaced or majorly overhauled engine?
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Old 03-06-2005, 09:05 PM   #41
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Re: Re: Re: 98 isuzu trooper buring oil excessively

Quote:
Originally Posted by sciallo
Is there any 98-01 Troopers out there with 150-200K miles without a rebuilt/warranty replaced or majorly overhauled engine?

recent post from an owner with 225k.
http://www.automotiveforums.com/vbul...d.php?t=375612

I've seen about 50 post over the last year with +98 Isuzu's with over 150k.
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Old 03-07-2005, 08:53 PM   #42
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Re: 98 isuzu trooper buring oil excessively

Quote:
Originally Posted by javatrooper
This won't fix it, but it may help. First put some Seafoam in your crank and run it for a few hard miles. Then change your oil but throw in a quart of Lucas in place of oil. It increase oil pressure and life in my '90 Trooper. I started burning at 30,000 but made it to 120,000 before I swapped out the 2.8 for a 3.4L.
You might want to reconsider using the lucas after you read this article:http://www.bobistheoilguy.com/images/lucas/lucas.htm
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Old 03-08-2005, 11:21 AM   #43
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Re: 98 isuzu trooper buring oil excessively

interesting article, but I question the results. I started burning oil at 30,000 in my '90 2.8L. Everyone later told me that these engines are junk. Using the Lucas on and off over the next 10 years I believe enabled my engine to hit 120,000 miles and I was hauling over 1/2 ton of cement on a regular basis over for the last 2 years. Without the Lucas i'm sure I wouldn't have been able to get up the hill. Now, for many years, since my trooper burned so much oil, I never changed the oil properly, just keep adding it. So when I pulled the engine, it was fairly gunky inside, but I do not know if it was lack of maintence or the Lucas ( which I doubt ) that caused the problem.
I can say this though. Many people were surprised my engine still ran as well as it did, and I have never seen my oil look like the oil in that article. I put a 3.4 L from a 95 Camero in the Trooper and it was very clean internally. It had 70,000 miles on it. Hopefully in about 10 - 15 years I will rebuild it and let people know how it weathered under proper care and Lucas.
Also, I just relaced my wifes escort engine. It has 20,000 miles and I have added Lucas, but I have decided to make the switch to full synthetic at the next oil change. Will be interesting to see if I develop a leak or not, but I have already flushed it with seafoam and do not foresee problems. I would like to switch my Trooper over to synthetic but I am not as confident with a higher milage engine. Maybe I'll stil give it a try.
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Old 03-10-2005, 06:31 PM   #44
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1999 Trooper Problems

My 1999 Trooper engined seized up while on vacation last Thanksgiving. After having the car towed to two different dealerships and paying to have the engine broken down (at Isuzu of America's direction), I find I need a new engine. Like many others, I regularly serviced this car and, except for this huge problem, love the car. I can no longer get Isuzu of America speak with me and, in fact, the Supervisor at Owner Relations hung up on me. This engine obviously had design fault and, it seems, that most problems occur after 60k miles and, hence, after warrantly. I want to know if anyone has successfully sued or gotten any satisfaction from Isuzu. There are many of us who have gotten "taken" on these vehicles. I've purchased three Rodeos (2-2001s; 1-2002) and am (was)a good Isuzu customer.

Replacement engines are either expensive, unavailable, or suspect (I've heard that they are not a good engine to rebuild). Any suggestions? Other then the engine, I have a great car (leather,sunroof, cd changer, etc.) in MI and I live in KS. Any one interested in buying the car?
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Old 03-11-2005, 08:48 AM   #45
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Re: 1999 Trooper Problems

Quote:
Originally Posted by RandyO
My 1999 Trooper engined seized up while on vacation last Thanksgiving.
I'm guessing since you posted in this thread that it seized due to low oil in the crankcase?

What's your asking price for the truck?
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