Posted: Wed Jul 20, 2011 12:39 am Post subject: Don't send a woman to do a man's job
My daughter just called from about 50 miles away and said her car is making a loud noise.So I had her hold the phone up to the car and it sounded like an engine knock to me, but then we all know sounds over the phone don't sound like they really do in person. I told her to shut off the motor and my wife would pick her up then she would listen to the car.
Well my wife's minivan had an engine knock a little over a year ago, but she wasn't sure if my daughter's car was making the same sound. She said it sounded like the muffler came loose, which has happened to my daughter's car before. Yet my daughter didn't know if the sound was like the muffler came loose. I told them to look under the car to see if anything is hanging down but they didn't see anything hanging.
So I'm thinking the downpipe might have rusted out and came loose at the manifold. I told my daughter she could drive the car home with my wife following behind her but she's scared it's gonna blow up. Her car is a 92 Chevy Lumina with 160,000 miles and lots of rust, so a rusty DP wouldn't surprise me since I've patched the exhaust system together many times before.
Today I went to Milwaukee to look at my daughter's car. As soon as I started it I knew what was wrong, a spark plug came out of the head. Since it was a rear plug I had to remove the dogbones and rock the motor forward to get at it. I found out why the plug came out after I screwed it back in the hole. The threads are stripped so I was only able to get it finger tight, but luckily it stayed in there for the 50 mile drive home. Hopefully some locktite will stop it from coming loose again.
I'm sure the previous owner knows the answer to that. The car is about dead anyway so the spark plug should stay in long enough for my daughter to get something better if I use some loctite. It's her first car and she definitely got her $2000 worth of use from it for the last 4 years.
The loctite didn't hold, the spark plug popped out again. So I bought a spark plug repair kit with a special tap and solid inserts. I'm gonna do this over the weekend so it'll be interesting to see if it works with the head on the car.
I'll put thick grease on the tap and hopefully it'll catch most of the shavings. Then I'll duct tape a small rubber hose to the shop vac and vacuum out the cylinder through the spark plug hole.
You could also do what the ford guys do when they blow up a plug in the new 5.4L, after they get all the business done of getting it out, or in your case tapping for the insert. They take fuel pump relay out and crank the engine a bunch to blow all the cermic/metal shavings out, but i agree with you, grease not the tap would be better.
That's a good idea but I'm not sure I feel comfortable not knowing if there's still any of the shavings in the cylinder. I got the spark plug hole rethreaded yesterday and after I installed the solid threaded insert the spark plug tightened up really good. So it shouldn't come out now and hopefully the other 5 won't come out in the near future.
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