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Cylinder 4 misfire
 Moderated by: Mike69, MaDMaXX Page:  First Page Previous Page  1  2   
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 Posted: Fri May 15th, 2020 03:11 pm
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JAMMAN

Wants A Torsen


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Headed out back in less than 10. Kids fed, wife off to work, me time. We will have answers today.



____________________
00 XLT 4WD XCSB 4.0 G2
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD RCSB 3.GO! Jalapeño
"I'm thinking about buying a horse eventually, I'll take half a dozen carts please"
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 Posted: Fri May 15th, 2020 07:52 pm
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JAMMAN

Wants A Torsen


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Well I didn't even get the heads off and made a decision based on what I have seen.
One wonderful thing was the bolts holding the exhaust manifolds to the heads came right out. You could see that the heads looked new after removing a few more things.
Here are a couple of the things I found.



Substantial wear on the rockers where they press the valve stems. About half of them are like this. Since the valve stems have no wear at all I have to assume this happened prior to him (the previous owner) replacing the heads. And he just used them.
Another thing that disturbed me:



This was not the worst one, I tried and was having a hard time getting a good picture Again about half of them were this way. One of them was so bad it looked like someone had cleaned it up on a belt sander.
Substantial wear in parts of the cam too.
My evaluation is that when the previous owner bought it (approx 175,000 miles when he bought it) the poor motor had already been abused  and was way late on proper oil changes. He took it apart, the heads were wasted, by the time he paid for heads and gaskets he just needed to put it together and sell it to cut his losses. I bet he used the worn rockers and the questionable push rods and subsequently the lifters.
Or maybe there is some sort of oil flow problem.
Whatever it is, since I know it burns a noticeable amount of oil, it needs at least cam, lifters, rockers, full gasket kit AND it might need heads I have no idea if they are cracked or not... the motor has to come out.



____________________
00 XLT 4WD XCSB 4.0 G2
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD RCSB 3.GO! Jalapeño
"I'm thinking about buying a horse eventually, I'll take half a dozen carts please"
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 Posted: Fri May 15th, 2020 09:23 pm
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410customs

Idahome


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134K asking $700 + 200 to ship has MAKE OFFER button
I would say $750 shipped see what they say :)
https://www.ebay.com/itm/Engine-4-0L-Ohv-VIN-X-8th-Digit-Low-Emissions-Fits-98-00-EXPLORER-148766/113824220719?fits=Make%3AFord&hash=item1a8073c62f:g:8SgAAOSw9HNdMfBe

Just something to think about



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I build custom RBV, specializing in drivetrain conversions, wiring, suspension and complete custom trucks
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 Posted: Fri May 15th, 2020 11:52 pm
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JAMMAN

Wants A Torsen


Joined: Mon Sep 18th, 2017
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I found one in Weirton WV, weighing the trip right now. The pic was in the truck but he has it pulled now. Claims 129K and he wants 500 for it. Says it ran great. Was in a 99. I hope he is storing it inside.

Just chatted with him, it is his dads and I have his number now. I think this might be a unicorn or it might be a turd.




____________________
00 XLT 4WD XCSB 4.0 G2
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD RCSB 3.GO! Jalapeño
"I'm thinking about buying a horse eventually, I'll take half a dozen carts please"
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 Posted: Fri May 15th, 2020 11:54 pm
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JAMMAN

Wants A Torsen


Joined: Mon Sep 18th, 2017
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AND I have 2 of anything he could have busted on it LOL upper lower intake, valve covers...

If I end up with it, it's getting a new timing chain and gears and tensioner. Which I have aready :-)



____________________
00 XLT 4WD XCSB 4.0 G2
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD RCSB 3.GO! Jalapeño
"I'm thinking about buying a horse eventually, I'll take half a dozen carts please"
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 Posted: Sat May 16th, 2020 02:03 pm
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JAMMAN

Wants A Torsen


Joined: Mon Sep 18th, 2017
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Getting closer. It has a good story.
His son was doing an 84 ranger 4wd swap. His friend had a 99 with a 129,000 mile 4.0 and a rotted frame. He bought the engine, harness and ECU was going to put it in the 84.
They decided to go V8 sometime during this. So the 4.0 sits in the back of his garage.
If this story is good then the 4.0 should be OK since they pulled it with every intention of using it. When you pull something with intention of using it you are a little more careful than just hacking and slashing.



____________________
00 XLT 4WD XCSB 4.0 G2
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD RCSB 3.GO! Jalapeño
"I'm thinking about buying a horse eventually, I'll take half a dozen carts please"
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 Posted: Sat May 16th, 2020 02:10 pm
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410customs

Idahome


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and that is a wicked good price for a 99 ohv with 130k!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I would be on my way



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I build custom RBV, specializing in drivetrain conversions, wiring, suspension and complete custom trucks
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 Posted: Mon May 25th, 2020 01:31 pm
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JAMMAN

Wants A Torsen


Joined: Mon Sep 18th, 2017
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OK it is home. I plan on putting the replacement on the stand and freshening it up including timing chain, water pump, valve cover gaskets.

Was wanting to ask and I should know this because I tore one down but can you replace the rear main without taking the oil pan off like on a 5.0?
I have so many 4.0 parts laying around, I think I even have a pre painted timing chain cover/housing, I have 2 other sets of valve covers, upper and lower intakes, too much to list. Part of me wants to drop the engine in there and get it on the road, part of me wants to make sure it will out last the transmission LOL.



____________________
00 XLT 4WD XCSB 4.0 G2
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD RCSB 3.GO! Jalapeño
"I'm thinking about buying a horse eventually, I'll take half a dozen carts please"
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 Posted: Mon May 25th, 2020 03:20 pm
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410customs

Idahome


Joined: Wed May 2nd, 2018
Location: Panhandle IdahoUSA
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Woooooooooooooohoooooooooooooooo good job!!

yes you can do rear main w/o removing oil pan
I would remove oil pan though, have a look see at the pickup screen, replace the oil pan gasket. 
The big oil leak spots on the ohv are:
valve covers
oil filter mount O rings
Dipstick
Oil Pan



____________________
I build custom RBV, specializing in drivetrain conversions, wiring, suspension and complete custom trucks
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 Posted: Mon May 25th, 2020 03:52 pm
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JAMMAN

Wants A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5095
Name: Jim
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OK oil pan gasket shouldn't be that much more expensive. I just don't know how much work I should put in it being the entire truck is 200000 plus. Would hate to put another week and 3-400 into the 4.0 just to have something else give out soon. I'd be yanking it and selling the shell LOL.

Plus I don't have a good way to clean parts any more and no sand blaster. Can't paint over crap. I simply won't paint over crap LOL.



____________________
00 XLT 4WD XCSB 4.0 G2
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD RCSB 3.GO! Jalapeño
"I'm thinking about buying a horse eventually, I'll take half a dozen carts please"
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