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Re: Backfire?

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Author  [Modern View]

11-26-2012 10:45:22

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Just finished the compression test. #1 I redid a few times as I wasn't sure if I was fully seated or not. From #1-#4; 8, 45, 60, & 70. Also checked the distributor and the cap had some oil in it. I cleaned it out with a shop rag. Not looking good..

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11-26-2012 11:09:40

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 Re: Backfire? in reply to Lucid, 11-26-2012 10:45:22  

That's definitely not good.

Have you adjusted your valves yet?

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11-26-2012 11:36:55

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 Re: Backfire? in reply to JRSutton, 11-26-2012 11:09:40  
Quoting Removed, click Modern View to see

The first try the gauge didnt even move. Unscrewed the gauge and retried it. It moved almost to the first bar on the gauge, 3rd go round was about the same. :/ Possible the #1 piston is stuck?

After I did my work, I was going to change the oil. And drop the pan to clean the oil pump etc. Then adjust the valves.

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11-26-2012 13:23:20

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 Re: Backfire? in reply to Lucid, 11-26-2012 11:36:55  
My first guess (and/or hope) would be a stuck or out of adjustment valve.

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11-26-2012 11:45:33

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 Re: Backfire? in reply to Lucid, 11-26-2012 11:36:55  
Im not sure how a piston could be stuck and have it run.

In my opinion, you should adjust the valves. You might be amazed at what that would do. If you have never done it, then its a good time to start.

I did mine with a .020" shim cold. Hot was .014" I think.

Its easy.
If you dont know how to adjust them, ask and I will give you step by step.

After you adjust, leave the valve cover off and run it. You(or at least I can) can tell if there is something out of order such as a valve not closing properly.
This post was edited by PretendFarmer at 11:47:04 11/26/12.

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