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#1
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Thanks for the suggestion, thats who I was going to call, looks like a good shop.
Well I just finished the compression test....not so good. Looking from the stern to the bow all the left cylinders were at 100-105, on the right the top two were 100-105 and the bottom right was 0. Was getting absolutely no compression or resistance with the plug in. The motor turned as if all the plugs were out when I still had that bottom right cylinder hooked up. I then checked to see if I was even getting the piston to compress, and it is so it looks like the rings are shot or the cylinder is fried. Anything else I should check before dropping her off at the shop? Can I resleeve the cylinder or is that asking for more trouble down the line? -Svence
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1984 V-20 Steplift 1998 Johnson 175 
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#2
12-30-2008, 10:32 AM
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it may be lucky enough to be honed out and use a new piston, rings and bearings on that hole. but at a marina they won't usually fix one hole usually they want to do a $2500 to $3000 rebuild. Um i would remove the oil injection now.
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 1978 V20 Cuddy w/ 225 Johnson. And Several other boat's
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#4
12-30-2008, 10:39 AM
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The thing that pisses me off is that the oil injection didn't fail...it was me. I knew it needed oil but just figured I would wait for the damn low oil light to come on. What's it gonna set me back to rebuild that one cylinder? Going to call Ron in Portsmouth today or tomorrow and see what he says.
-Svence
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1984 V-20 Steplift 1998 Johnson 175
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#5
12-30-2008, 11:01 AM
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in a shop my guess is least $950 and most likely will cost $2500 to $3000. The OMC owners manuals all say to check the oil before you leave the dock and everytime you fill with gas.
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1978 V20 Cuddy w/ 225 Johnson. And Several other boat's
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#6
12-30-2008, 12:12 PM
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Off to the shop. Cylinder wall is scored to hell. Pics...
http://picasaweb.google.com/csvencer/JohnsonCylinder# -Svence
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1984 V-20 Steplift 1998 Johnson 175
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#8
12-30-2008, 04:12 PM
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I use to fill oil after each trip, why would you wait for the light??
that doesn't look to bad, but it will need honing, piston,rings, berrin. they also may be able to resleve it?? Nothing will be cheap, and might be able to find good used motor for less. look for same year omc and you keep this one and have all the parts you will ever need
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1986 V20  Old Fishermen never die, we just SMELL that way!!
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#9
12-30-2008, 11:00 PM
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You might try Airodine it's located at the airfield at Bowers Hill. They do machine work (and on marine products) They won't care if you fix 1 or all cylinders. BUT you want to check (visually and mic) all cylinders and look closely at the pistons/rings/wristpins/crank to make sure you don't have other problems due to low oil. You probably already know but I just had to mention it.
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Tis better to be quiet and thought a fool than open your mouth and prove it!! 1991 V-20 cuddy I/O 350 volvo duo prop, 1998 15ft Grumman 9.9 Johnson 
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#10
12-31-2008, 11:53 AM
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I am sadden to see your engine got destroyed this way, Once again my thanks to guys on this site who convinced me NOT to connect my VRO and I was having doubts, I now know mine is never getting connected !
Once again sorry.
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