Misfire/oil on spark plug

[SHOdded]

:thumb:  hope to hear the replacement went flawlessly!

 

[ShoNuff757]

Finally got the car back yesterday. Ford put a factory reman long block in. Only took two months to get the work done!
It feels noticeably peppier than it did before. Now I'm apprehensive about tuning the thing, since I've already blown one engine without tuning it.

 

[SHOdded]

give it a 1,000 miles or so (how long would that take you btw) then go for it.  I always like to get to know the baseline before I make a change.

 

[lamrith]

Finally got the car back yesterday. Ford put a factory reman long block in. Only took two months to get the work done!
It feels noticeably peppier than it did before. Now I'm apprehensive about tuning the thing, since I've already blown one engine without tuning it.

Yeah I agree with you on that.  It seems in the various groups I am in I have seen a number of EB failing of late, both tuned and not tuned.  I am tuned at this point, and love to go for more, but same time not going to lie that I am a bit apprehensive myself even with what I have done so far.

 

[ShoNuff757]

Finally got the car back yesterday. Ford put a factory reman long block in. Only took two months to get the work done!
It feels noticeably peppier than it did before. Now I'm apprehensive about tuning the thing, since I've already blown one engine without tuning it.

Yeah I agree with you on that.  It seems in the various groups I am in I have seen a number of EB failing of late, both tuned and not tuned.  I am tuned at this point, and love to go for more, but same time not going to lie that I am a bit apprehensive myself even with what I have done so far.

I had a minute to talk with the tech that did the work. He blamed it squarely on detonation. He strongly recommended that I put a catch can set up on the engine. It's at the top of my list of priorities now.

 

[sholxgt]

I'm really glad it worked out!

Regarding tuning or not...I think your stock motor scattering shows it's not really a tune issue.  Motors generally either hold together or they don't.  Your factory motor was likely just not right from the start.

That being said, I would only run a quality full synthetic oil and top tier premium fuel on your new motor.  Don't know what was in the last one, but quality fluids and fuel along with a good maintenance routine will keep the new one healthy as long as possible.  Tuned or not.

 

[ShoNuff757]

I'm really glad it worked out!

Regarding tuning or not...I think your stock motor scattering shows it's not really a tune issue.  Motors generally either hold together or they don't.  Your factory motor was likely just not right from the start.

That being said, I would only run a quality full synthetic oil and top tier premium fuel on your new motor.  Don't know what was in the last one, but quality fluids and fuel along with a good maintenance routine will keep the new one healthy as long as possible.  Tuned or not.

Thanks. That's pretty much standard for any vehicle I have (synth oil, good gas). With the first oil change on this motor, it'll be full synthetic for its entire life.
My other vehicle is an '04 WJ Grand Cherokee w/ the 4.7L HO engine (an engine not particularly known for long life), and it's been on Mobil 1 since I got it. 126k hard miles (a lot of off-roading) and it's still going strong.