Reply With Quotemore than likely you lost the threads in the head. A helicoil can be
put in place to repair the threads and it should be stronger than the
original threads. I would expect it to cost less than $200. Not sure
of the exact price though. I think most mechanics do it with the head
on the car.
Scot
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Toyota Camry: Spark Plug shot out of head - what kind of damage?
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- 12-09 07:01 AM #1TouchGuest
Spark Plug shot out of head - what kind of damage?
97 Camry LE, 4-Cyl, 90K miles
Well, upon starting the engine, we heard a loud bang and saw some
smoke from under the hood. Shut it off immediatly, and found that a
spark plug had shot out of the engine block and into the underside of
the hood.
What kind of damage to the engine is likely here? It it simply a
matter of putting the spark plug back in, or rethreading the head to
do so, or is there likely to me some major things going on here. We
had it towed to a Toyota dealer (unfortunatly we were out of town at
the time), and will find out tomorrow, but would like to be prepared.
- 12-09 05:34 PM #2ScotGuest
Re: Spark Plug shot out of head - what kind of damage?
- 12-10 03:06 PM #31992Guest
Re: Spark Plug shot out of head - what kind of damage?
Scot,
I hope that most mechanics take the head off.. In order to install a
helicoil you will more than likely have to drill and helicoils self thread
so metal is going to get into the engine.
Tony
"Scot" <com> wrote in message
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- 12-10 04:14 PM #4Philip®Guest
Re: Spark Plug shot out of head - what kind of damage?
IF one is going to remove the cylinder head to perform a spark plug
hole thread repair, you are NOT going to use something as fragile and
pressure leak prone as a 'helicoil' to make the repair. Weld up the
hole, drill, and retap or Time Serts.
http://www.timesert.com/
--
* Philip
"I'm dreaming of a white Christmas,
Just like the ones I used to know"
-Bing Crosby
posted:
- 12-10 11:13 PM #5ScotGuest
Re: Spark Plug shot out of head - what kind of damage?
Well, the proper thing to do would be to remove the head. But
mechanics that I know of will not do that. They tap new threads
insert the coil and use compressed air to remove the head shavings.
Helicoils are a standard method of repairing plug threads. Unless you
weld with a stronger material, they will not be as strong as a steel
helicoil.
Scot
- 12-12 03:54 PM #6C.Guest
Re: Spark Plug shot out of head - what kind of damage?
I don't know about Toyota's policy, but I do know that Ford specifically warns
agains the use of helicoils for spark plug tread repairs. As Philip suggested
Time Serts are the way to go - or just replace the head. I would guess you
could get a rebuilt cylinder head for under $400 + installation. If you go
this route you get the valve job thrown in.
Regards,
Ed White
Scot wrote:
- 12-13 07:30 PM #7TouchGuest
Re: Spark Plug shot out of head - what kind of damage?
Thanks for the replies everyone. Our mechanic used a Time Sert to
repair it, changed out the plugs and wires, andgot us back on the
road. The biggest problem was that we were 130 miles from home on a
Saturday night, and had to have it towed to the local Toyota dealer,
rent a car to get home. On Monday when I called the dealer, was told
that they could probably repair the threads, but a few hours later I
was told they were putting together an estimate for around $2600 to
replace the head! Had it towed to our local guy, and for $400 we are
back on the road!
On Tue, 09 Dec 2003 00:01:40 -0800, Touch Tone Tommy
<com> wrote:
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