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Crankshaft TDC

Tiny
FLORES LES
  • MEMBER
  • 2001 LEXUS GS 300
  • 3.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 175,333 MILES
I have the car listed above 2jz-ge with vvdi. The water pump was replaced recently. Somehow the crankshaft was rotated and now can't get it back to TDC when I hand crank it. It seems to only go 180 degrees. Help is appreciated, thank you.
Sunday, May 3rd, 2020 AT 12:59 AM

12 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Did you rotate the engine and it stopped turning?

Did you crank the engine at any time? I am worried that the timing being out, you may have damaged the valves and you have a valve hitting a piston.

https://www.2carpros.com/articles/how-a-timing-belt-works

I attached the diagram of the marks and how they should be set.

See if that is where the timing line up.

Roy

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Sunday, May 3rd, 2020 AT 4:24 AM
Tiny
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It was cranked, and I also came to the conclusion that valve is bent. I just wanted to run it by an expert. In your opinion, would you replace the cylinder block or try to fix the valves?
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Sunday, May 3rd, 2020 AT 5:31 AM
Tiny
ASEMASTER6371
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The heads would have to be removed and inspected. At the same time, they need to look for piston damage. If there is, then you are talking a total overhaul.

My suggestion is to replace the engine with a good used motor. That would save you money fro both ends.

You can go to a site www. Car-part. Com and enter your information and there will be dozens listed from yards in your area.

I attached one page for you but I found over 400 available for you to view.

Roy
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Sunday, May 3rd, 2020 AT 5:57 AM
Tiny
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Thank you for your time and opinion.
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Sunday, May 3rd, 2020 AT 6:04 AM
Tiny
ASEMASTER6371
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You are welcome.

Always glad to help.

Roy
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Sunday, May 3rd, 2020 AT 6:07 AM
Tiny
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Excuse me sir, is it possible for you to provide my the "how to" remove cylinder block and engine?
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Sunday, May 3rd, 2020 AT 3:04 PM
Tiny
ASEMASTER6371
  • MECHANIC
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This is a huge project to take on. You need a lift, engine crane and a lot of different tools.

To be honest, I would go to alldatadiy.com and you can get a 1 year subscription for your car. Then you can go to the procedure and print out all the steps and pictures for the procedure.

https://www.alldatadiy.com/buy/index.html

It is a very long list of steps for this procedure.

You can also go to www.car-part.com to find a good used engine in your zip code.

Roy

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Sunday, May 3rd, 2020 AT 3:33 PM
Tiny
ASEMASTER6371
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Did you respond? I see an email but nothing came through.

Roy
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Sunday, May 3rd, 2020 AT 3:39 PM
Tiny
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Yes.
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Sunday, May 3rd, 2020 AT 3:44 PM
Tiny
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I was wondering if its possible to attach a link on how to remove cylinder block and engine?
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Sunday, May 3rd, 2020 AT 3:45 PM
Tiny
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Oh never mind. I seen your newest response.
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Sunday, May 3rd, 2020 AT 3:47 PM
Tiny
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It is okay.

Let me know if you have any other questions.

Roy
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Sunday, May 3rd, 2020 AT 3:51 PM

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