Page 1 of 2 12 LastLast
Results 1 to 25 of 29

Thread: Just enuf to be dangerous..........................Engine Rebuild.

  1. #1

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63

    Just enuf to be dangerous..........................Engine Rebuild.

    I know enough to tear engines down and replace head gaskets and such. As what I did to my 1990 Mighty max 2.4l fuel injected engine.

    It ran and runs beautiful, cept when it fouls the #2 plug. I put in those expensive E3 plugs (30 bux for the set).

    Ran great for a while, till it fouled. Doesn't have the power I think it should have. Once going she runs fast, but I can feel the hesitation, spit and sputter.

    Took the truck to the stealership, and was told #2 cylinder failed the leak down test. When I checked the compression, it seemed good . Front to rear 150, 150, 150, 160 first run, 150, 150, 150, 162 second round.

    Charged me darn near 100 bux for that and told me 5 grand for a rebuild. (((((Ain't gonna happen.....))))))

    Bought an engine for 450, darn thing was locked up. (got my money back finally), can't find anything decent in the local salvage yards that runs, besides they probably need rebuilding anyways. So, that being said, may as well rebuild mine since it's out of the truck.

    Question...............................if the #2 cylinder failed the leak down, what could be the cause......does it absolutely have to be rings?

    I've got the engine out, on a stand and just pulled the head, and the cylinders appear to be find. As soon as I go to work 2morrow, I'll post pics, I can't post pictures on the antiquated puter......hell I only 512 megs of ram.

    Can the valves or head cause the leak down failure? All the help would be appreciated.

    And in advance.....Thank You.....Thank You very Much......................!!!!!!!!

  2. #2


    Array
    Status
    Offline
    Join Date
    08-31-2011
    Posts
    832
    Location

    Calgary, Alberta, Canada
    Vehicle

    1981 Dodge D-50
    Engine

    Ford V8
    Yes a small crack in the intake valve or seat will leak a small amount of fuel causing the plug to foul do to raw fuel in the chamber while there is no spark.This can also happen if the valve not adjusted properly

  3. #3

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63
    Hey Thanks Ford......to me it appears I have a head issue. Will provide photos 2morrow.

    The cylinder really looks fine. Looks just like the others. The valves on the other hand look wet.

    Can't really tell what the seats look like, don't see ant cracks, but with the naked eye, who know.

    Gonna take the head down to a machine shop, and possibly have it rebuild.......cost providing.

  4. #4



    Array
    Status
    Offline
    Join Date
    07-24-2012
    Posts
    2,363
    Location

    Washington State
    Vehicle

    1986 Mitsubishi Mighty Max
    Engine

    G63B
    Those plugs are dangerous, as well as those freaky 4 pronged plugs and whatever else a manufacturer can dream up while counting his money. I used them for about an hour and removed them and sent them back. There is a problem with them on many vehicles and especially those strange iridium twin and triple electrode plugs. What is the symptoms of problems you may ask? You just witnessed it first hand. Burning valves among others. Stay away from spark plug snake oils, they are a selling scheme to try and look like an innovator but the testing on them lacks time. Stick with what your truck manufacturer documents, in other words ONLY USE NGK's. I have never had a problem with these plugs in my entire life as a driver or doing tune ups. The reason I tried these other plugs was because I was feeling spontaneous I guess and sure enough the truck acted bad right after installing them. In fact I have had a problem with the truck's motor since that day, but only now has it progressed to parked vehicle. I have used the single electrode iridium with no problems, but I'm sticking with the basic NGK now because the stats show they work and always work without some strange burning of a valve or piston ring.

    I don't work for or advertise NGK, it is just a far more superior quality spark plug for OUR trucks than 90% of these other new fangled plugs. You want to burn a valve or cause a problem in your engine, just change it's normal rhythm with something different then what it's been using for many years and you'll get your unwanted wishes.

  5. #5

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63
    Here are the pictures I promised:::::::::::::::::::::::::::::
    Attached Images

  6. #6


    Array
    Status
    Offline
    Join Date
    08-31-2011
    Posts
    832
    Location

    Calgary, Alberta, Canada
    Vehicle

    1981 Dodge D-50
    Engine

    Ford V8
    From the Pic's it looks like the Valves in Cyl 2 and 3 are dirtier then 1 and 4, you might have a small crack in the head between the 2 and it's leaking coolant into the piston. If you take a real good look piston 2 and 3 are clean on top that means they are being washed with something either gas or coolant. Best thing to do is have the head checked for cracks and really inspect the head gasket to see if there was a leak from the water passage to the cyl's

  7. #7

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63
    So, from the looks of the cylinder walls, it doesn't appear I have a ring issue. I'm hoping that having the head rebuilt/replaced may do the trick.

    I had some white smoke when I stomped the gas. Just a trickle of smoke when idling.

    Budgets very limited, so getting away with just head work would make my day.

  8. #8


    Array
    Status
    Offline
    Join Date
    08-31-2011
    Posts
    832
    Location

    Calgary, Alberta, Canada
    Vehicle

    1981 Dodge D-50
    Engine

    Ford V8
    White Smoke = Coolant, Black Smoke = Flooding, Gray/Blue Smoke = Burning Oil. So if you were seeing white its either a crack in the head, warped head or bad head gasket.

  9. #9

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63
    Hey, Thanks man..........will be taking the head to the shop this weekend.

    Would that cause a leak down failure....considering all of the compression numbers were pretty good?

    Thanks

    Jack

  10. #10


    Array
    Status
    Offline
    Join Date
    04-04-2011
    Posts
    712
    Location

    Columbus, OH
    Vehicle

    1992 Mitsubishi Mighty Max
    Engine

    Other
    yes, that would cause a leakdown failure, and the 2-3 junction is the likely place to get coolant also. That where my head gasket let go.

    Head Gasket top 2-3.jpg

    Oh yeah, 30 lbs of boost helped.

  11. #11

    Array
    Status
    Offline
    Join Date
    12-04-2012
    Posts
    498
    Location

    New Bern, NC
    Vehicle

    1986 Dodge D-50
    Engine

    G54B
    You could take the cam out so the valves close and pour some PB blaster or parts cleaner into the combustion chamber of the head. If it leaks you've got a valve problem. If it doesn't leak you most likely have a bad H/G or warped head. When I bought my truck the 2.4 locked up the timing belt tensioner and snapped the belt. Had to yank the head and fix some valves. Glad I did because the H/G looked worse than Mike's. The metal rings were split open and the truck was running on straight muddy water.

  12. #12

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63
    kewl..........never thought about this..............

    Thanks recian, getting to it right away. Garage here I come.

  13. #13

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63
    Do you have to use silicone sealant for the oil pan?

    Can you just use the gasket with a little grease to hold it into place?

    Thanks for y'alls comments.

    Jack

  14. #14



    Array
    Status
    Offline
    Join Date
    07-24-2012
    Posts
    2,363
    Location

    Washington State
    Vehicle

    1986 Mitsubishi Mighty Max
    Engine

    G63B
    Use silicone, The manual specifies it.

    High temp too, Mine was red in color. It also says to not contaminate the bolt threads too. Go around them on the inside of the hole when laying a bead and bolts go down from center outward...you know the routine, lol. There's like 100 of them little bolts too.
    Last edited by BradMph; 07-28-2013 at 04:39 PM.

  15. #15

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63
    Hey thanks man...................................yea, guess I should have looked in the book.

    Yep....................theres a bunch of those little suckers and when you drop one, it dosen't stay where you dropped it.

    That little booger bounced all the way out the garage door. I found it out in the driveway.

  16. #16

    Array
    Status
    Offline
    Join Date
    04-06-2011
    Posts
    482
    Location

    Jacksonville, FL
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    G54B-T
    Dont forget new timing belt and tensioner, balance shaft belts and tensions, water pump. Change out everything behind timing cover while its off and then forget about it. You dont wanna end up with problems later that could be avoided now

  17. #17

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63
    Hey thanks crvtrch90......................done.

  18. #18



    Array
    Status
    Offline
    Join Date
    07-24-2012
    Posts
    2,363
    Location

    Washington State
    Vehicle

    1986 Mitsubishi Mighty Max
    Engine

    G63B
    At least you didn't find the bolt lodged in your tire, . or lodged in a wall like my valve spring compressor tried to do to a spring.
    Your seal will last much longer with the silicone. I usually like to NOT use a bead so much as just using my finger and coating the gasket on both sides. Protects the gasket a little better and your going to have to get silicone on your finger anyway, so why not. :.)

  19. #19

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63
    Yep, thats what I do, is smear it on both sides of the gasket.

    Will be easy peasy, with the engine on a stand finally, just turn it over and go to town.

    Still have to take the head in, hope it ain't cracked.

  20. #20

    Array
    Status
    Offline
    Join Date
    12-04-2012
    Posts
    498
    Location

    New Bern, NC
    Vehicle

    1986 Dodge D-50
    Engine

    G54B
    Don't even use the gasket unless you're doing a trans pan. Go to the dealer and pick up the grey stuff that comes in a tube for a caulk gun. Less than $20 and a tube can do 3-5 oil pans. That stuff is bulletproof, requires no gasket and with the opening on the tube it lays a perfect bead that looks just like the engine came from the factory. I do it on a regular basis and have learned from personal experience this is the only way to make the job very effective and it also looks very professional.

  21. #21

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63
    Quote Originally Posted by recian View Post
    Don't even use the gasket unless you're doing a trans pan. Go to the dealer and pick up the grey stuff that comes in a tube for a caulk gun. Less than $20 and a tube can do 3-5 oil pans. That stuff is bulletproof, requires no gasket and with the opening on the tube it lays a perfect bead that looks just like the engine came from the factory. I do it on a regular basis and have learned from personal experience this is the only way to make the job very effective and it also looks very professional.
    Any dealer, or a Mitsubishi dealer?

  22. #22

    Array
    Status
    Offline
    Join Date
    12-04-2012
    Posts
    498
    Location

    New Bern, NC
    Vehicle

    1986 Dodge D-50
    Engine

    G54B
    Honestly most dealers sell it since it's starting to become a staple in modern aluminum engines. Nissan uses it. 999MP-1217HP is the p/n. I know Mopar uses it also since I work at a chrysler/mitsu dealer. It's the same stuff with a different label just can't remember the p/n.

  23. #23

    Array
    Status
    Offline
    Join Date
    12-04-2012
    Posts
    498
    Location

    New Bern, NC
    Vehicle

    1986 Dodge D-50
    Engine

    G54B
    I've seen that stuff on original nissan and honda engines well over 200k and 15+ years and no leaks. You can almost put the stuff on, bolt the pan down let it dry and pull the bolts out and it'll probably stay. I've even had some oil get into it before with no issues. Sealing clean surfaces most of the knock-off stuff can do but if you're doing a pan in the yard while oil is trying to drip around the edges that stuff doesn't care as long as you try to clean it good.

  24. #24

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63
    Well, lack of funds has stalled any and all progress.......................................... ..so, I dabbled a little with the polishing equipment that I use for my bikes, and decided to see if I could do something constructive on the mighty max.

    Cleanup parts (1).jpgCleanup parts (2).jpgCleanup parts (7).jpgCleanup parts (9).jpgCleanup parts (14).jpg

  25. #25

    Array
    Status
    Offline
    Join Date
    03-21-2013
    Posts
    234
    Location

    Georgia
    Vehicle

    1984 Dodge D-50
    Engine

    4G63

    Exclamation

    Well, today, I pulled the rocker arms and cam from the head, and filled the chambers with brake clean.

    So far, after 20 minutes all's well.

    We'll see in the morning..................

Page 1 of 2 12 LastLast

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •