4.6L (1996-2004 Modular) MustangTechnical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within. Sponsored by Cruizin Concepts
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so today i was on the freeway, just cruisin and all of sudden i lost a little bit of power and my engine sounded like i was using a semi truck "jake Brake" and this wasnt gradual, it came on instantly. so i pulled over and popped my hood (in nuts rush hour traffic with a shoulder that my stang barely fit into lol) and so im listening with my hood up and it sounds like the passenger side cylinder bank. the noise was completely rpm dependant and sounded like compressed air escaping through a small hole. i couldnt really take a good look though (due to traffic and pouring down rain) thankfully AAA came to my rescue and got me home. this sounds like plug blowout to me. any other opinions? also i have searched this forum and found that some people used helicoil to fix this. so i wanna try that (if it really is plug blowout). please tell me i dont have to pull my crappy romeo head off to fix this. and thanks for any help
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alright so today i pulled my plug out. passenger side 3rd cylinder from the front. im not sure what the cylinder number is. 5 or 6? but my cop boot was torn in half and my spark plug had no gap. i talked to my dad (a bitchin mechanic but he lives 100 miles away so he cant help me out too much lol) and he said if the piston contacted the spark plug that the whole bottom of the spark plug and the electrode would be crushed, which its not. i can see on the threads of the plug, it looks like the plug was physically pulled out of the head, but i believe that since the threads from the head are not on the plug...that my head still has threads in it. *im praying to the stang gods* so whoever changed my plugs before i put the car in used autolite 764's. so my plan is to buy another cop. where should i buy just one? it is to my knowledge that they are all the same, just with different stickers on them. also im gonna buy motorcraft sp493 plugs. if it blows out again then i am probably gonna do a timesert. im gonna try and post pics but dont know how. opinions?
Let us know what you find, I'd be interested to know what caused this.
I'm a recent GM convert, and I can't say I dislike my mustang, I just don't get how Ford screwed up so much when it comes to the engine. Spark plugs blowing out is absolutely ridiculous. Plus the fact they were pushing 265 horsepower when their competitor was making well over 300...
My GT had the original plugs with 60k miles. I've had the car about a month and already blew out a plug. I went ahead and replaced them with new plugs, and found that another was loose. I torqued them all to spec and have my fingers crossed.....
Oh well, I'm sure I'll warm up more to it if I go for a little while without parts flying off of the car
need to check the threads and find out if they have been damaged or not before you start torquing in the new plug. i would get a magnetic pickup tool and stick it around that area and see if it picks up any metal. then try to install a plug with your hand to make sure it isnt cross threading
lol its for portland state university. im (forced) to take a folklore class and my professor brought in some mexican "bread of the dead" and i dont care what you say its damn good lol. but i stuck a magnet down there already and i got no threads or shavings at all. my plan was to stick the plug on an extension and slowly thread it in and see what happens
bump.. can someone please tell me why these spark plugs are significantly different. can i run them? i got them off american muscle in the 99-04 section, but i am just very skeptical since they are quite different
triple post ftw! ok i got my coil now so i need to know if i can run these plugs. i need a running car so please does ANYBODY know if the thread depth on these plugs is too much compared to my other plugs. thanks
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