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Timing belt/ possible bent valve?

 
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Old 23 Jul 2014, 01:20 am
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Default Timing belt/ possible bent valve?

I was cruising in my 07 PT touring at about 60mph and 2.5krpm when the engine light came on and the gas pedal stopped working. I towed it to a shop and they said the timing belt is broken.

They quoted $800 for the timing belt replacement and said that even if they replace the timing belt, the engine might not work because a valve might be bent. So I have 2 questions:

1) how likely is it that a valve got bent?

2) There are other options other than pouring $800 on a possible fix to find out if a valve is bent, right? I've heard of a bore scope being something shops might have and can check for bent valves relatively cheap.

I really can't afford a new car and was wondering if you all had any advice on the situation. $800 seems ridiculous without the guarantee the car is gonna work, I want to check if the valve is bent without spending such a ludicrous amount of money to check.
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Old 23 Jul 2014, 02:24 am
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Default Re: Timing belt/ possible bent valve?

If you haven't yet please introduce your self. And your PT.
Mileage, model, engine?

The only way to check is, as soon as the new belt is on and timed, before assembly of all the other covers, belts, mounts....
is to do a compression check of each cylinder. The valves in this motor can hit each other and bend and just by looking you cannot tell even with the head off, but they will not hit the piston.
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Old 23 Jul 2014, 06:32 am
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Default Re: Timing belt/ possible bent valve?

Hasn't it been posted here many times that it's almost impossible for the valves to slap in this engine..??
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Old 23 Jul 2014, 06:45 am
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Default Re: Timing belt/ possible bent valve?

Quote:
Originally Posted by JoeX View Post
If you haven't yet please introduce your self. And your PT.
Mileage, model, engine?

The only way to check is, as soon as the new belt is on and timed, before assembly of all the other covers, belts, mounts....
is to do a compression check of each cylinder. The valves in this motor can hit each other and bend and just by looking you cannot tell even with the head off, but they will not hit the piston.
Yes it is possible, but almost never happens. Engine should be fired up with just the belt on while still open to be sure all is well. This is the best answer I have. Thats not a horrible price for the belt by a professional shop.
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Old 23 Jul 2014, 07:20 am
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Default Re: Timing belt/ possible bent valve?

Hi Joey, Make sure they replace the water pump too. Since the timing belt turns the water pump, when they replace the timing belt they will be right there! If they do not change it and your water pump fails later, it will be another 800 bill as they have to open it am do the same job basically a second time! Much better to kill two birds with one stone and re[lace both at the same time.
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Old 23 Jul 2014, 07:31 am
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Default Re: Timing belt/ possible bent valve?

Have them take a good look at the timing belt tensioner also. They do go bad and like was just said, they need to open it all again if that goes bad.
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Old 23 Jul 2014, 07:56 am
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Default Re: Timing belt/ possible bent valve?

Quote:
Originally Posted by Busted_PT View Post
Yes it is possible, but almost never happens. Engine should be fired up with just the belt on while still open to be sure all is well. This is the best answer I have. Thats not a horrible price for the belt by a professional shop.
Agree. Actually, $800 is a good price - if they replace water pump and tensioner as well.
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Old 23 Jul 2014, 03:10 pm
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Default Re: Timing belt/ possible bent valve?

I just replaced mine after it snapped going about 75 MPH, last weekend.

It runs like a brand new car

The theory I heard (and it makes pretty good sense), is if the belt snaps, the valves are not going to turn any more, since they are disconnected from the crank, and each other (cams) for that matter.

The goofy thing is, even the instruction sheet from the belt replacement kit stated the 2.4 was an interference motor, and of course it is NOT.
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Old 23 Jul 2014, 03:31 pm
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Default Re: Timing belt/ possible bent valve?

seems odd that this is such a HUGE deal im guessing there must be some misinformation on the chrysler site about the PT motor
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Old 23 Jul 2014, 04:24 pm
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Default Re: Timing belt/ possible bent valve?

Quote:
Originally Posted by myckee View Post
Hi Joey, Make sure they replace the water pump too. Since the timing belt turns the water pump, when they replace the timing belt they will be right there! If they do not change it and your water pump fails later, it will be another 800 bill as they have to open it am do the same job basically a second time! Much better to kill two birds with one stone and re[lace both at the same time.
That's a REALLY good idea get a "kit" with the belt , water pump , tentioner and idler .. do it ALL at the same time or you'll be sorry .. look around , Kits range from $100 and change up............ might as well check the motor mounts too since they need to come off anyway ....
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