If it was me, I would be doing a cold and hot compression check to look at ruling out a head gasket. Wayne Wayne & Lisa, Bolton Landing NY 66 Ambo 990 wagon, 69 Ambo Coupe 2003 FLHTCI, 2000 WJ 2001 XJ, 2002 STS Northstar On Tue, 28 Oct 2008 10:22:55 -0500 Keith Evenson <epd@xxxxxxxxxxxx> writes: > So I have talked to many mechanics at various dealers and private > shops and nobody can give me a good answer to why my overflow tank > on > my radiator is overflowing. Here is the story, about a month ago I > > drove my 70 Jav with a 360 (slightly built) to my brothers shop 15 > > miles away. It was a nice night so I was driving a bit harder then > > normal just having fun with my car. When I got there my overflow > tank > was spraying out the overflow hole. I have stared with simple > repairs > and gone up, I have replaced the line to the overflow tank and > cleaned it to make sure it is not blocked and has a tight connection > > to the radiator. I have replaced my rad. cap, I have taken out the > > thermostat. I have done multiple pressure tests on the rad. to see > if > it builds pressure and it does not. I do not have any white smoke or > > coolant in my oil. I have driven it up to 80 miles with out getting > > on it and the level in my overflow tank does not change but, I can > > take it out when it is cold and drive it hard for 2 miles (a few > hard > starts off the line) and it will be overflowing before I can get the > > hood open. I was just told to put a 15lb cap in the radiator since > it > is not a stock motor it may need a higher pressure cap. I have been > > told it was the head gasket or cracked head, but since it does not > > build pressure when I drive it without getting on it that does not > > seem like the problem either. Could I be looking at some kind of > vacuum leak? Any help would be great. I don't want to pull my heads > > if I don't have to. > > > > Keith Evenson > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > http://splatter.wps.com/pipermail/amc-list/attachments/20081028/10ba82ad/ attachment.htm > > ________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list > > ____________________________________________________________ Fast Computer Training. Click here. http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3mAUCxrGMikFMej0UINdZtnsCIfxpwpsidUnKPYbGhouskuq/ _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list