Yes! This should be step one!
What did you do to your jeep today?
- Thread starter TheQ
- Start date
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as an example...
remember that the 06 65th I bought from a guy for cheap, he was told the engine broke a push rod.
.... these are OHC engines. what it DID have, was a kicked exhaust rocker, which I put back into place.
get some more hard facts, preferrably pictures, of what's wrong before making any repair decisions. PLEASE.
remember that the 06 65th I bought from a guy for cheap, he was told the engine broke a push rod.
.... these are OHC engines. what it DID have, was a kicked exhaust rocker, which I put back into place.
get some more hard facts, preferrably pictures, of what's wrong before making any repair decisions. PLEASE.
Waiting for a call back to be able to ask more questions like this. I want to know:
Did they take the valve cover off and lay eyes on a broken spring?
If so, is the valve stem still straight?
Did they use a borescope to look at the piston and cylinder?
If so, is everything alright in there?
Or is a broken spring diagnosis only arrived at by compressed air in the cylinder leaving by way of the exhaust?
Anything else I should ask?
Any collateral damage? A rocker and spring pieces, retainer and keeper could bounce around and contact the cam and other moving parts in there. Although an exhaust rocker will usually just fall out of the way.
Oh man. The shop stopped at the compression test and the diagnosis of an exhaust valve spring is an assumption because “these are notorious for that.”
Dang it.
Thinking now about what I want to do. I am not sure I would want them to tear into it to do anything further if that’s all they’re willing to do in the first place. But it is sitting in their lot and it can’t stay there long.
Dang it.
Thinking now about what I want to do. I am not sure I would want them to tear into it to do anything further if that’s all they’re willing to do in the first place. But it is sitting in their lot and it can’t stay there long.
profdlp
Fired
I'd be leery of having people work on it who sound like they are only guessing to begin with. If all you wanted was a dumb guess you could have come to me. 
Agreed, Prof. Your rates are way better.
I'm sure they'd be glad to dig deeper for a fee... They are a business so they're not going to dig into anything unless you tell them and are prepared to pay.
Their diagnosis is suspect now though. Like prof said I'd be leary of them. It could be a number of things without further inspection.
I never really heard of issues with broken exhaust valve springs. Valve seats after an overheat but not springs. When issues arise with anything you only hear about the negative. Mopar (whatever it's called these day) put this and the 4.7 in a whole lot of vehicles. The number of failures may be scary but I bet if you compare it as a percentage it not significantly different from most other manufacturers. This is coming from someone who has owned subarus and Honda recently.
Their diagnosis is suspect now though. Like prof said I'd be leary of them. It could be a number of things without further inspection.
I never really heard of issues with broken exhaust valve springs. Valve seats after an overheat but not springs. When issues arise with anything you only hear about the negative. Mopar (whatever it's called these day) put this and the 4.7 in a whole lot of vehicles. The number of failures may be scary but I bet if you compare it as a percentage it not significantly different from most other manufacturers. This is coming from someone who has owned subarus and Honda recently.
profdlp
Fired
And worth every penny!
I agree with that. Had they said "We can do a bunch of minor checks and maybe spend four hours chasing a wild goose, but we recommend pulling the head and starting there. Your call" then I would have more confidence in their pre-diagnosis.
Aztimer2
Full Access Member
My battery is dead again.
you'd be surprised.
a lot of shops are turning down the complicated jobs, because they don't bring in the $/hour of the simple stuff.
why tie up a lift for days, while you wait for parts or customer approval (when you find something else wrong), when you can bang out a dozen or 2 brake jobs, oil changes, tire installs, etc.
This is so true! It's happening in many sectors. Pick and choose the jobs based on the best return.
I wish @lfhoward was closer too. I'm not a mechanic but have been deep into my 02 for a spun bearing, crank swap and headgaskets. I could definitely help figure out what happened.
You’ve torn apart some engines in your day, and put them back together too.
I would love to have a wrenching party with y’all and tear down the drivers side head, and figure out the fate of cylinder #5. I am secretly hoping that a spring broke but there was no other contact with anything, and so it will be a quick and easy swap and back up and running at 100%. I didn’t hear any clanking or weird noises. It just died with a whimper. Thus, maybe a clean break.
I have a couple of options for good shops that can do this work, recommended by work colleagues and friends. I have been calling around today and reading google reviews to figure out which shops have the best chance of doing this right the first time. I will probably make a decision tomorrow.
derekj
Full Access Member
This bugs me
- shops just looking for the easy stuff - LAME!!! I only turn down work in my shop if it is a F550 service truck as we don't have a hoist big enough to pick them up. I run a shop at a Ford dealer and the newest truck in the shop today was a 2010. This isn't normal for us but I don't turn down work - get it in and get it fixed! If you are worried about working on the old stuff just add an hour or 2 to the estimate for having to deal with rusty bolts and such.
derekj
Full Access Member
If we weren't 4900km's apart I would fix your Jeep for sure
Johnny O
Just hangin' out.
Strange times we are in when youtube is better for information than a "certified mechanic".I'd be leery of having people work on it who sound like they are only guessing to begin with. If all you wanted was a dumb guess you could have come to me.
Strange times indeed.
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