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Guest Message by DevFuse

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Good and Bad for my new Brat

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3 replies to this topic

#1 Rinker1989



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Posted 28 February 2014 - 07:49 PM

We'll I got good news and bad about the new brat I picked up the other day. I got her started and she runs ok did not sound to bad that's the good news the bad is that I checked compression and on one cylinder the compression is very low only 20 to 25 psi going to look into this tomorrow any ideas where I should start firsts?

#2 BratRod


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Posted 28 February 2014 - 08:01 PM

It's been sitting. Could be stuck rings. If not, then probably head gasket.

#3 junk250


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Posted 28 February 2014 - 11:49 PM

Hello,  I would start by adjusting the valves on the bad cylinder.


A tight valve will cause low compression.


Hope this helps !

#4 bertmann73


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Posted 01 March 2014 - 12:15 AM

 i would say gummed up rings also. usually when i get a motor thats been sitting i shoot wd40 down the plug hole and let it sit for a while....could also be a broken ridge and ring as the ea71 are notorious for that. my 78 had a broken piston ridge and ring and was runnin that way for who knows how long until i tore the engine down and noticed,

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