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Reading plugs

Scheduled Pinned Locked Moved Car Tech
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  • MisterCMKM Offline
    MisterCMKM Offline
    MisterCMK
    wrote on last edited by
    #1

    What causes the spark plug to look like this? This is out of one of our work trucks. The other 3 plugs look fine.

    legacy image

    legacy image

    legacy image

    FASTER THAN DUBBSY

    > thrash;315544 wrote:
    > I noticed that the new 5.0 valve covers say "Ford Motorsport" or something on them. Instead, the valvecovers should be a big bald eagle, holding a rifle in one talon, an american flag in the other, eating apple pie, and shitting on the outline of europe.
    >
    > Ford is back :)

    1 Reply Last reply
    0
    • wesholeW Offline
      wesholeW Offline
      weshole
      wrote on last edited by
      #2

      Ash deposits or coolant deposits. Any cel's?

      1 Reply Last reply
      0
      • MisterCMKM Offline
        MisterCMKM Offline
        MisterCMK
        wrote on last edited by
        #3

        No, the CEL is not on. I'll scan it tomorrow though.

        FASTER THAN DUBBSY

        > thrash;315544 wrote:
        > I noticed that the new 5.0 valve covers say "Ford Motorsport" or something on them. Instead, the valvecovers should be a big bald eagle, holding a rifle in one talon, an american flag in the other, eating apple pie, and shitting on the outline of europe.
        >
        > Ford is back :)

        1 Reply Last reply
        0
        • ParkerP Offline
          ParkerP Offline
          Parker
          wrote on last edited by
          #4

          im betting its eating oil in that cylinder...

          edit...
          or it looks like it could be overheating.

          or it could be a dodge?

          10 Jeep
          10 F450
          08 F250
          05 F350
          86 rx7
          70 F100
          63 Olds

          > BlueSRT0483;244555 wrote:
          > As proven by Parker... Not everything you read on the internet is true.
          > Trafik Jamz;260984 wrote:
          > You are right Parker.

          1 Reply Last reply
          0
          • MisterCMKM Offline
            MisterCMKM Offline
            MisterCMK
            wrote on last edited by
            #5

            Time to buy a leakdown tester then. I'll post up the compression numbers tomorrow when I get back to the office but they all looked pretty good.

            FASTER THAN DUBBSY

            > thrash;315544 wrote:
            > I noticed that the new 5.0 valve covers say "Ford Motorsport" or something on them. Instead, the valvecovers should be a big bald eagle, holding a rifle in one talon, an american flag in the other, eating apple pie, and shitting on the outline of europe.
            >
            > Ford is back :)

            1 Reply Last reply
            0
            • RexwagonR Offline
              RexwagonR Offline
              Rexwagon
              wrote on last edited by
              #6

              any additives in the oil or fuel?

              bad valve seals?

              legacy image

              1 Reply Last reply
              0
              • ParkerP Offline
                ParkerP Offline
                Parker
                wrote on last edited by
                #7

                reading sparkplug charts i see...

                10 Jeep
                10 F450
                08 F250
                05 F350
                86 rx7
                70 F100
                63 Olds

                > BlueSRT0483;244555 wrote:
                > As proven by Parker... Not everything you read on the internet is true.
                > Trafik Jamz;260984 wrote:
                > You are right Parker.

                1 Reply Last reply
                0
                • RexwagonR Offline
                  RexwagonR Offline
                  Rexwagon
                  wrote on last edited by
                  #8

                  Maybe....

                  legacy image

                  1 Reply Last reply
                  0
                  • MisterCMKM Offline
                    MisterCMKM Offline
                    MisterCMK
                    wrote on last edited by
                    #9

                    Here are the compression test results.

                    Cyl Dry Wet
                    1 160 160
                    2 153 162
                    3 155 162
                    4 165 170

                    FASTER THAN DUBBSY

                    > thrash;315544 wrote:
                    > I noticed that the new 5.0 valve covers say "Ford Motorsport" or something on them. Instead, the valvecovers should be a big bald eagle, holding a rifle in one talon, an american flag in the other, eating apple pie, and shitting on the outline of europe.
                    >
                    > Ford is back :)

                    1 Reply Last reply
                    0
                    • D Offline
                      D Offline
                      dynotune
                      wrote on last edited by
                      #10

                      is it a 318/360 with a cracked head (between the valves)??? They leak coolant when running but won't show up on a compression test...

                      DynoTune Speed & Performance
                      Custom EFI Programming for Ford, GM, and all others
                      Mobile chassis dyno service
                      www.dynotuneusa.com
                      (605) 753-1101

                      1 Reply Last reply
                      0
                      • MisterCMKM Offline
                        MisterCMKM Offline
                        MisterCMK
                        wrote on last edited by
                        #11

                        It is actually a 2.5 I4 pushrod AMC motor out of a 98 Dakota. The motor is a reman that was installed in the spring.

                        FASTER THAN DUBBSY

                        > thrash;315544 wrote:
                        > I noticed that the new 5.0 valve covers say "Ford Motorsport" or something on them. Instead, the valvecovers should be a big bald eagle, holding a rifle in one talon, an american flag in the other, eating apple pie, and shitting on the outline of europe.
                        >
                        > Ford is back :)

                        1 Reply Last reply
                        0
                        • D Offline
                          D Offline
                          dynotune
                          wrote on last edited by
                          #12

                          i'd say you're probably still gonna need to jerk the head and investigate...

                          DynoTune Speed & Performance
                          Custom EFI Programming for Ford, GM, and all others
                          Mobile chassis dyno service
                          www.dynotuneusa.com
                          (605) 753-1101

                          1 Reply Last reply
                          0
                          • MisterCMKM Offline
                            MisterCMKM Offline
                            MisterCMK
                            wrote on last edited by
                            #13

                            I tore it down and should have the head off after lunch here.

                            FASTER THAN DUBBSY

                            > thrash;315544 wrote:
                            > I noticed that the new 5.0 valve covers say "Ford Motorsport" or something on them. Instead, the valvecovers should be a big bald eagle, holding a rifle in one talon, an american flag in the other, eating apple pie, and shitting on the outline of europe.
                            >
                            > Ford is back :)

                            1 Reply Last reply
                            0
                            • ruthless351R Offline
                              ruthless351R Offline
                              ruthless351
                              wrote on last edited by
                              #14

                              MisterCMK;246102 wrote:
                              I tore it down and should have the head off after lunch here.

                              You have way too much time on your hands!! O BTW Im gunna put money on coolant.

                              legacy image

                              Understeer is when you hit the wall with the front of the car
                              Oversteer is when you hit the wall with the rear of the car.
                              Horsepower is how fast you hit the wall
                              Torque is how far you take the wall with you

                              1 Reply Last reply
                              0
                              • MisterCMKM Offline
                                MisterCMKM Offline
                                MisterCMK
                                wrote on last edited by
                                #15

                                Here is what I found.

                                legacy image

                                legacy image

                                legacy image

                                legacy image

                                FASTER THAN DUBBSY

                                > thrash;315544 wrote:
                                > I noticed that the new 5.0 valve covers say "Ford Motorsport" or something on them. Instead, the valvecovers should be a big bald eagle, holding a rifle in one talon, an american flag in the other, eating apple pie, and shitting on the outline of europe.
                                >
                                > Ford is back :)

                                1 Reply Last reply
                                0
                                • wesholeW Offline
                                  wesholeW Offline
                                  weshole
                                  wrote on last edited by
                                  #16

                                  Have the head pressure tested yet?

                                  1 Reply Last reply
                                  0
                                  • MisterCMKM Offline
                                    MisterCMKM Offline
                                    MisterCMK
                                    wrote on last edited by
                                    #17

                                    Nope. The head doesn't look cracked or anything. A couple of guys on TCS were suggesting that the cylinder was lean. I pulled the head off since it seemed to be using some coolant and leaking out of the radiator cap even though the cap is fine. I've got the parts for it and it should be back together tomorrow morning.

                                    FASTER THAN DUBBSY

                                    > thrash;315544 wrote:
                                    > I noticed that the new 5.0 valve covers say "Ford Motorsport" or something on them. Instead, the valvecovers should be a big bald eagle, holding a rifle in one talon, an american flag in the other, eating apple pie, and shitting on the outline of europe.
                                    >
                                    > Ford is back :)

                                    1 Reply Last reply
                                    0
                                    • zbrownZ Offline
                                      zbrownZ Offline
                                      zbrown
                                      wrote on last edited by
                                      #18

                                      Too me that def doesn't look like a lean condition, i'd say coolant is the culprit hands down

                                      rx7-8.89@157mph
                                      12v dodge, twins

                                      1 Reply Last reply
                                      0
                                      • wesholeW Offline
                                        wesholeW Offline
                                        weshole
                                        wrote on last edited by
                                        #19

                                        I'd definately get it magnufluxed/pressure tested to verify there isnt any cracks hiding there. and def get it resurfaced.

                                        1 Reply Last reply
                                        0
                                        • ParkerP Offline
                                          ParkerP Offline
                                          Parker
                                          wrote on last edited by
                                          #20

                                          i blame obama

                                          10 Jeep
                                          10 F450
                                          08 F250
                                          05 F350
                                          86 rx7
                                          70 F100
                                          63 Olds

                                          > BlueSRT0483;244555 wrote:
                                          > As proven by Parker... Not everything you read on the internet is true.
                                          > Trafik Jamz;260984 wrote:
                                          > You are right Parker.

                                          1 Reply Last reply
                                          0

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