Hi everyone, I finally signed up and registered. This site has saved me numerous times when working on my wife's 97 Expedition with 4.6. Great site with lots of real helpful information. I used the help here to fix my EGR passage in the intake elbow that was plugged up. Also replaced the coil paks which had a bad one. I used the forum to help with replacement of the heater hoses, although I could not get off those damn hose connectors, I ended up cutting them off with a real small cutoff wheel, then used regular old worm drive hose clamps. I had coolant leaking into the #3 spark plug well and causing a misfire, that is where the forum here helped me determine I needed to replace the hoses as my fittings were leaking. No heater lines leaking now, they are dry. Changed the plugs out around 105K, that was a PITA job. It has about 125K on it right now.
So now to my problem. I can smell coolant from under the hood, but no leaks on the ground. I look all over the engine and can not see any obvious leak, but there has to be as I am getting coolant in the #3, #4, #7 and #8 spark plug holes. I look and can not figure out how it is getting in there, no coolant lines in that area for #7 or #8 or obvious path from somewhere. I have been taking the plug wire out, blow compressed air in the hole to "dry" it out. Also blow out the plug wire boot. Spray a little WD-40 to help seal it and also make easier to remove in future. This is a fairly recent occurrence, over the last couple months. The engine starts missing, sets the CEL, and the reader indicates P0303, P0304, P0307 or P0308. Misfire in that number cylinder. My blowing air fix has seemed to help thus far, but I am concerned about how I am getting coolant in the spark plug holes
? Any help is appreciated.
Oh yeah, even though I go by 38Chevy454, I have used that name on several forums, I am really a hot rodder that tolerates my wife's newer Expedition
I have some old Chevy's and Fords as well, here is my daily driver 49 Ford COE, one pic at Bonneville Salt Flats this year during Speedweek
, and one closer up: