Compression Test Results
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=2113
Printed Date: November-23-2024 at 12:07am
Topic: Compression Test Results
Posted By: '72 mustang
Subject: Compression Test Results
Date Posted: July-20-2005 at 2:02pm
I did a compression test on my PCM 351 and the results are as follows:
1=118
2=125
3=130
4=140
5=82
6=58
7=125
8=138
I drained the oil and there was a coulple tablespoons (approximately) of water that came out when I first pulled the drain plug. Any help on a diagnosis would be appreciated. Thanks.
-------------
72 CC mustang
|
Replies:
Posted By: jameski
Date Posted: July-20-2005 at 2:36pm
My vote is for a blown head gasket on the port side between 5 & 6.
-------------
current boat
http://www.correctcraftfan.com/diaries/details.asp?ID=1977 - 94 Sport Nautique
previous boat
http://www.correctcraftfan.com/diaries/details.asp?ID=601 - 78 Martinique
|
Posted By: '72 mustang
Date Posted: July-20-2005 at 3:00pm
If I'm pulling the top end apart should I go ahead and do both sides? What about the heads, should I take them in to a shop and have them checked out? What is the approximate cost for resurfacing etc.?
-------------
72 CC mustang
|
Posted By: Siveck
Date Posted: July-20-2005 at 3:45pm
I would go ahead and pull both heads and have them cleaned up and have new valve springs and seals replaced. The cost for both of mine was like $300. Have them make sure that the heads are flat so that the gasket won't blow again. You'll likely spend $100 for the new gaskets as well. I use Felpro marine gaskets. I couldn't find marine valve cover gaskets, so I used the rubber automotive style.
-------------
1975 Ski Nautique
"Small Letter Boat"
|
|