Help burning oil driving cross Nebraska

[1911]

Of note, up at these elevations it not only has less power, but it runs hotter. In Maryland I have never seen temps above 206 and it runs at 195-199. Here I am seeing 206 and a peak at 217

You need more ignition advance at altitude; your Maryland timing is too retarded for altitude, and retarded timing will heat up the exhaust (and from there the rest of the engine) pronto. Can't remember if you can even adjust your timing on an FZJ80, but if you can then advance it at least 3-5 degrees while in Denver/the mountains.

 

[BTLSHP]

You need more ignition advance at altitude; your Maryland timing is too retarded for altitude, and retarded timing will heat up the exhaust (and from there the rest of the engine) pronto. Can't remember if you can even adjust your timing on an FZJ80, but if you can then advance it at least 3-5 degrees while in Denver/the mountains.

I assume mine has the factory 3 Degrees BTDC . Funny, I had thought about moving it to 5-6 but backed off with an emissions test looming. I have the blue clutch with 10,000 cst fluid.

 

[doc_random]

On the passenger seat fore/aft failing, you may end up here:

seat parts — Gamiviti

80 series Land Cruiser power seat caps and gears

www.gamiviti.com

Look for a white plastic (nylon?) cap with a cross on it under the seat. Maybe 15mm diameter. These hold the ends of the screw drive in place. The caps can work loose and fall off. Then the screw does not engage. It is awkward to get to, but if you find the cap you can screw it back in. Clean, dab of white grease, tighten to snug, then back off one turn or so.
The gears can fail, and the old grease is propably dried out.
One of a fews posts on this topic:

Power Seat Eats Replacement Gears

I purchased a '96 LX450 a few weeks ago. Both power seats were hung up, but the motors were working. I bought the Gamiviti replacement gears and end cap and installed on the driver seat without any trouble. I dropped the seat back in and it worked fine... for a few minutes. Once again the...

forum.ih8mud.com

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[mudgudgeon]

The worst smoke seems to be accelerating after coasting to as stop

Classic sign of worn valve stem seals.

Coasting, the engine is in full vacuum. It pulls oil past the seals which will be rock hard, and oil can collect in the ports. When you strip on the gas, oil gets drawn into the cylinders and burns off.

I assume mine has the factory 3 Degrees BTDC . Funny, I had thought about moving it to 5-6 but backed off with an emissions test looming. I have the blue clutch with 10,000 cst fluid.

You can run up to 10⁰ advance on the timing. Not all 1fz-fe will tolerate 10⁰.
Going to 6-8⁰ advance would be a good starting point, see if there's any noticeable change.

You may need to revert back to 3⁰ for emissions testing. It's a 10 minute job to change the timing

 

[BTLSHP]

Classic sign of worn valve stem seals.

Coasting, the engine is in full vacuum. It pulls oil past the seals which will be rock hard, and oil can collect in the ports. When you strip on the gas, oil gets drawn into the cylinders and burns off.


You can run up to 10⁰ advance on the timing. Not all 1fz-fe will tolerate 10⁰.
Going to 6-8⁰ advance would be a good starting point, see if there's any noticeable change.

You may need to revert back to 3⁰ for emissions testing. It's a 10 minute job to change the timing

Thanks, I have a punch list to work through mostly remotely as I fly home Sunday.

 

[Kernal]

The Chevron Delo XSP 400 Full Synthetic 15W-40 is sold at some Wally Marts and some NAPA's, it's not magic oil, but they say it was formulated to decrease consumption and that's what I experienced compared to Mobil 1 10W-40. It's approved for both Diesel and Gas (Petrol) engines (CK-4 and SN, SN plus).
FWIW

Chevron Delo XSP 15W-40 Heavy Duty Synthetic Diesel Motor Oil, 1 Gallon - Walmart.com

Buy Chevron Delo XSP 15W-40 Heavy Duty Synthetic Diesel Motor Oil, 1 Gallon at Walmart.com

www.walmart.com

 

[BTLSHP]

Post an update once you're back on the road.

Kernal, I found your Chevron XSP 400 15W-40 at Walmart -$57 for 12 quarts (not bad) and I will do the oil change this evening. I am expecting to get a leak down test sometime next week (I will be back in Maryland). I would like to put the results here for thoughts. The will also scope each cylinder bore.

Thanks all

 

[BTLSHP]

Ok, we have ha a bit of an adventure getting home. We discovered a fracture at the site of my dad's replacement hip that should have been caught elsewhere. He is doing better, but as the Dr.'s in Utah suggested, we have found a new orthopedist here in Maryland.

The shop linked to my daughter's business looked at it today and got these cold engine pressure readings which they thought were completely consistent with my prior reading. Importantly they saw no signs of excess oil on the plugs or other sources of concern with a borescope.

He also noted that the oil level in the engine was completely full and thought the change to Delo XSP 15w-40 was a good idea. (Kernal's suggestion).

So, he will have her drive the car and check the oil levels over the next 250-1000 miles and see what happens.

Seat is fixed.

 

[John Mc]

BTLSHP,
Any updates? We had the same thing happen to my sons 94 (little over 300,000mi) last month during his trip to Colorado. He went through 10qt on his way home. Symptoms sound the same as yours. Car has good power and smooth. I have plans to do compression test, and scope the cylinder, but haven't had a chance. I'm hoping it's just valve seals, but that is a lot of oil for valve seals! I wish I could say he doesn't drive it over 75mph.

 

[BTLSHP]

BTLSHP,
Any updates? We had the same thing happen to my sons 94 (little over 300,000mi) last month during his trip to Colorado. He went through 10qt on his way home. Symptoms sound the same as yours. Car has good power and smooth. I have plans to do compression test, and scope the cylinder, but haven't had a chance. I'm hoping it's just valve seals, but that is a lot of oil for valve seals! I wish I could say he doesn't drive it over 75mph.
View attachment 3968864

So, I have little new to offer. She is in the midst of climbing season an traveling most weekends. At 100 miles in on the Chevron XSP 400 15W-40 the dipstick read full. But it needs 500 or so and a longer trip. When we handed her the keys my ad says the car comes with a "mother in law" and like many she does a good job of avoiding me.

One thing the trip taught us was the altitude change exposed a weak cooling fan clutch and the temps of the engine rose significantly. I bought her a new one and she will return the original which will be rebuilt. Apparently the older originals had more shearing surface for the oil so they are worth keeping in service.