WHITENER0420 Posted January 27, 2008 Share Posted January 27, 2008 My dad owns a 2001 F150 Lariat with 5.4L. Truck has 109K miles. The truck started to run as if there was garbag in the gas tank...so we put some fuel cleaner in it and it ran perfect. Then last night the thing started skipping and doesnt have any power or anything..so we were going to replace the plugs today. Got into replacingthe plugs and pulled the boot or coil off the plug and one is full of antifreeze. Has anyone else experienced this problem? Is this a cracked head since they are aluminum or cracked intake?....the truck was just paid off last year. please respond ASAP. thank you Quote Link to comment Share on other sites More sharing options...
WHITENER0420 Posted February 2, 2008 Author Share Posted February 2, 2008 well we only got 4 plugs changed so far...now the truck is running rough and service engine light is on with code P0403...Believe this code has to do with EGR circuit malfunction...can anyone help???? Quote Link to comment Share on other sites More sharing options...
YT90SC Posted February 6, 2008 Share Posted February 6, 2008 well we only got 4 plugs changed so far...now the truck is running rough and service engine light is on with code P0403...Believe this code has to do with EGR circuit malfunction...can anyone help???? p0403 is an egr code, but not a valid one for an f-150. did you mean p0430?. Antifreeze in the wells is from an intake gasket leak, or someone changing a t-stat without cleaning up after themselves. OR if it is the #4 it could be that the hose that runs over the top of it is leaking at the connection. Either way, fix that FIRST. Clean out the holes, put new coils on the holes with antifreeze in them, and new coil boots for all of them. Should take care of the miss. If you put new plugs in with old boots or put new plugs in where there is still antifreeze, they are now junk. Quote Link to comment Share on other sites More sharing options...
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