angelsanzbriz Posted May 6, 2023 Share Posted May 6, 2023 Started her up this morning had a slight misfire . I plugged in a cheap scanner and it came up with p0300 at first then p0302 so I have removed top to get access to and remove could pack on non2 cylinder and it was full of coolant not oil definitely coolant and I can't find where it's coming from. Please help is this bad news any advice most welcome Quote Link to comment Share on other sites More sharing options...
angelsanzbriz Posted May 6, 2023 Author Share Posted May 6, 2023 Only 2 hoses close to coil pack 2 are the throttle body hoses and I have removed them and they seam fine coolant level is OK going to keep am eye on coolant level and keep driving it see if misfire comes back and check again to see if it's full of coolant around the coil pack again I for the lift of me can't find where it's come from Quote Link to comment Share on other sites More sharing options...
Dave G Posted October 24, 2023 Share Posted October 24, 2023 Appreciate this thread is a bit old but I think the throttle bodies are cooled by coolant so you might have leak in one of those hoses or connections. Most plausible since the throttle bodies are above the coil packs. Did the misfire ever come back (I hope not obvs!) 1 Quote Link to comment Share on other sites More sharing options...
angelsanzbriz Posted October 24, 2023 Author Share Posted October 24, 2023 Hi yes it took about 1000 miles took out coil pack and it was wet again I have already checked those hoses and couldn't find any leak. I have bought an endoscope camera and borrowing a presure tester this weekend to try and track it down but I think my worst fears are going to be coming through as someone else has had this on a 350 and it turned out to be the head. I was already thinking this. Quote Link to comment Share on other sites More sharing options...
Cosmic73 Posted October 24, 2023 Share Posted October 24, 2023 Coil packs are sealed and should prevent splash getting passed so it may be a crack in the head. When you look inside the spark plug tube, can you see any signs of a crack? 1 Quote Link to comment Share on other sites More sharing options...
angelsanzbriz Posted October 24, 2023 Author Share Posted October 24, 2023 No but only looking from top I have bought an endoscope camera to have a better look at the weekend and hopefully borrowing a pressure tester . Quote Link to comment Share on other sites More sharing options...
Dave G Posted October 25, 2023 Share Posted October 25, 2023 Hmm, I hope for you it isn't the head (or head gasket?), either way, not an easy or cheap fix. Post back what you find... 1 Quote Link to comment Share on other sites More sharing options...
angelsanzbriz Posted October 28, 2023 Author Share Posted October 28, 2023 Sniff test done head gasket is fine Removed coil pack soaking wet Dried it out put camera down Pressurised system Coolant coming up from around sparkplug. head is pourus seen with my own eye not good news I'm fffffff Jesus Quote Link to comment Share on other sites More sharing options...
Dave G Posted October 31, 2023 Share Posted October 31, 2023 Oh no... That's not good news. Don't suppose there's any cheap fix for that, probably head off territory... Quote Link to comment Share on other sites More sharing options...
angelsanzbriz Posted October 31, 2023 Author Share Posted October 31, 2023 Head replacement I'm afraid and all the other stuff that might aswell be done while the front is off Quote Link to comment Share on other sites More sharing options...
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