After 17 days , last night I find out whats problem with my Stang (runing TOO LEAN)

[Slow5.0]

Yes thats right , take me 17 days over 50 hrs to find out that I have broken valve keeper on cylinder #4 on intake valve , I didn't pull valve cover on passenger side because I belive problem is with cylinder #8 , so I pissed off , take U/L intake again and pop the passenger valve cover and I find that valve keeper are pass retainer so I valve mover almost freely , I can push rocker arm with hand,
I have some pics and video ,
BUT I thinkin this have to be my problem because on wideband sensor (which I use last weekend ) show me right or passenger side runn TOO lean, and meybe this is why I runn too lean because intake valve over cylinder #4 never close whole way Meybe What you think guys

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And here is how looks like other GOODones valve keepers

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[1105]

For one that cant be good. Glad you finally found your problem though. Are you going to try and fix it or go with some aftermarket heads?

 

[Venom351R]

well that sucks, if you have the $$$ get some nice aftermarket heads. Twisted wegde heads are $995 out of Mustangs Unlimited.

 

[go.rei GT]

Nothing like not knowing what's wrong. Glad you know what to fix now, and good thing you didn't buy a new engine yet! A nice new set of heads, is just a little bit cheaper

 

[WMDPALMER]

Good to hear Seth. Sure would be a nice time to get a set of heads or send yours over to send them out to Thumper for a good porting. Good luck!

 

[Slow5.0]

Thanks guys , I going to fixed this heads , because I don't wanna spend somemoney on cheap used heads like I almost did , I wanna save some more money and bought new ones

 

[FEESER 94 COBRA]

Glad to see you found your problem,guess you wont be needing my heads after all if you still want my roller rockers let me know.allways happy to see someone save money and get what they want at the same time.

 

[302fordracer]

feels good to have finally found the problem eh..happy for ya buddy

 

[SexyStang1994]

What actually broke??? The valve???? Or did the keepers pop out....

Looks like from the pic the spring is being held in by the rocker arm.

Why would he need to pull the head to replace a keeper???? Why not compress the spring and put two new keepers in there...

Looks like your lucky you didnt drop the valve in there.

 

[HoofnIt]

Congrats on finding the problem! These things can be so frustrating sometimes! I hope you can swap out the keepers without taking the head off.

 

[HoofnIt]

double post

 

[AznStanger3v]

man, that just sucks

 

[go.rei GT]

Why would he need to pull the head to replace a keeper???? Why not compress the spring and put two new keepers in there...

Nobody said he'd have to pull the head. We were just alluding to the nice opportunity presented to purchace new heads (I think like this because I'm lazy, and while its torn down, it'd be an easy install.)
Of course, he mentioned he doesn't have the finances for them, so...some other time

 

[Slow5.0]

yesterday and today I order new valve springs for exhaust and intake , new retainers , new sleevs, keepers ,lifters and pushrods , tomorrow I going to change that stuff and I hope so cylinder #4 didn't smack intake valve , if is that intake valve I have brand new one , but meybe valve smack piston that I don't have