CHANGING PLUGS
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Joined: Jun 2006
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CHANGING PLUGS
here is a real stupid question.... My 2003 Dodge Ram Slt 1500 4.7 engine light went on. Truck was not starting running rough etc. took it to dealer and they said the intake had to be cleaned and a sensor in there was bad. $450.00 for that... then they wanted 200 to change the plugs, well hell I can change plugs. Well I got in there and there is nothing that looks liked a spark plug. What the Hell!!! am I not looking in the right place?????? there are square looking items with smaller wires on each side that are spaced and placed like those are the plugs but I dunno??????? Help please!!!
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Joined: Apr 2004
Posts: 75
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RE: CHANGING PLUGS
If your not 100% sure you can do this yourself, DON'T! The 4.7 has aluminum heads and if you over tighten the plugs you will strip the threads out. Now, start by removing the air intake hose and silencer on top of the engine. Just remove the air cleaner lid and disconnect the hose clamps on the intake hose, disconnect the pcv hose, unplug the air temp sensor in the back of the air silencer, and remove the two hex head screws (one on each side) that hold the intake silencer on. Remove the silencer.
Now you can see the 4 coils on each side of the intake, each are held down by a small (10mm wrench size bolt.) Unplug the connector on each one, remove the small hold down bolt, and pull straight up with a slight twisting back and forth. Remove all the hold down bolts before you remove the coils/plug connectors because if you drop one down a spark plug hole your screwed.
Remove the plugs with a good quality plug socket that has the rubber boot inside to hold the plug as you pull it out. You will need a 6" and 10" extension to get to all the plugs, take your time.
Check the gap on the new plugs .040, one of mine was off. Carefully thread the new plugs in. I never did find out what the torque spec. was for the plugs so I just snugged them down and went about 45 degrese more. Put everything back exactly the way you took it apart. Remember, don't drop anything down the plug holes and don't over tighten the plugs! Good luck.
Now you can see the 4 coils on each side of the intake, each are held down by a small (10mm wrench size bolt.) Unplug the connector on each one, remove the small hold down bolt, and pull straight up with a slight twisting back and forth. Remove all the hold down bolts before you remove the coils/plug connectors because if you drop one down a spark plug hole your screwed.
Remove the plugs with a good quality plug socket that has the rubber boot inside to hold the plug as you pull it out. You will need a 6" and 10" extension to get to all the plugs, take your time.
Check the gap on the new plugs .040, one of mine was off. Carefully thread the new plugs in. I never did find out what the torque spec. was for the plugs so I just snugged them down and went about 45 degrese more. Put everything back exactly the way you took it apart. Remember, don't drop anything down the plug holes and don't over tighten the plugs! Good luck.
