Remove engine to replace valve spring?
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Remove engine to replace valve spring?
Thats what my mechanic told me about my 2002 exploder sport trac with 4.0. I started another thread here a while back about my truck having a bad miss, turns out it has a broken valve spring. He said the engine must be removed to do the job as its on the #1 cylinder which happens to be on the passenger side and the cam chain drive is on the back of the block. He said my choices are: Remove the engine and just replace the spring, which may or may not effect a repair as theres no way to know if the valve made contact with the piston. Remove the head and send it off to a machine shop for repair/inspection. Or, remove both the heads, one for repair and inspection, the other just for inspection, and then put the whole mess back together.
Whats the best option here? I'm not exactly made of money, and, I'm still licking my wounds about having such a mechanical disaster take place on a vehicle that up until this point, I absolutely loved and has only 90,000 miles on the clock.
Heres a pic of the damage:
Thanks,
Nitro
Whats the best option here? I'm not exactly made of money, and, I'm still licking my wounds about having such a mechanical disaster take place on a vehicle that up until this point, I absolutely loved and has only 90,000 miles on the clock.
Heres a pic of the damage:
Thanks,
Nitro
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Joined: Apr 2004
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I looked at some pics of those heads--looks like the cam has to come out to replace the spring. If so, you must pull the motor, as your mechanic is correct about the cam chain being in back.
I'd replace the chain tensioners while I was at it.
I have a '98 so you can imagine my joy whenever I see a thread like this--it's a vision of the future methinks.....
I'd replace the chain tensioners while I was at it.
I have a '98 so you can imagine my joy whenever I see a thread like this--it's a vision of the future methinks.....
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