Thread: Clifford the truck :: 1999 Ford F-150

Great muffler the 40 Series, that's what I have on my '05 4.6L. And you said you changed your plugs right? Did the gas smell start occurring after you changed them? If so then your plugs aren't tightened all the way.

Ill go out right now and check my plugs. What's. Good baseline to tighten em? (No tq wrench)

TIGHT! Lol ive always gone with a solid snug I've nver had a prob

Well I made sure they were all nice and tight, back of the motor drivers side seemed the loosest and back engine passenger side also slightly loose. They seem to kinda be partially stripped? As I can tighten em for a good few 1/8 turns so I got em tight to a point I feel safe with. Ill have to check if it is stripped tomorrow as the old ones where the same way when tightening but come out no problem

But tightened em up all the way tht I could, ran it for a minute or so and no gas smell so far, tomorrow morning will be the real test

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Also noticed a small knocking sound (since I've had the truck)
Previous owner said its been there for years and some say its no problem.
I took a video (too dark to see anything but it was me explaining where the sound is from and you can hopefully hear it as well, ill upload it shortly

Good to hear and unfortunately the early years of these motors the genius engineers at Ford only put like 4 threads on the spark plug holes, it wasn't until 2003 I think when they fixed it and put 8 threads on them. The V8's had issues with blowing plugs quite commonly. And if the tick is what I think it is, it's normal but I'll wait for the video. Keep us updated on the gas smell though.

Sorry for waiting so long to upload the video, forgot about it (netflix took me haha)
http://static.photobucket.com/player...ps61782ed8.mp4

Hahaha sorry I sound weird, videos make me sound 14 (I'm 19) ha but seems u can hear the knocking best towards the end when I have the phone right under the driver door sill on the outside

so any updates as to what you guys think the sound could be? i have one of those automotive stethoscopes and i used it to hear around, sound isnt in the top end, i wana say it seems a low end noise? cant be that bad as prev owner said its been there for years

For some reason I can't view the video. I'd love to give some input if my phone or iPod would allow me too. Can you describe what it sounds like?

Almost like a diesel sound? Ill upload it to youtube tonight as well and link it so others can view it easier

Originally Posted by Bosanski

Almost like a diesel sound? Ill upload it to youtube tonight as well and link it so others can view it easier

Alright, I'll be sure to watch it and see if I can help identify it.