ducky698 Posted March 9, 2011 Share Posted March 9, 2011 Hello All, hope all is well. been busy driving, an putting Mack together, got to actually start it an crawl it around the car park the other day, still no accelerator. then it springs a leak from a core plug. who in there right mind puts non stainless core plugs in between the 2 cyl heads?? now I gotta rip 2 heads off an engine that you cant buy parts for to replace all plugs. I was lucky enough to locate 3 head gaskets, so is there anything I should look out for when pulling this down?Grant Quote Link to comment https://www.bigmacktrucks.com/topic/18282-866-running/ Share on other sites More sharing options...
fullfuel01 Posted March 9, 2011 Share Posted March 9, 2011 would be good to take compression before removing head. if a cylinder or valve seat is bad you'll know it before! Quote Link to comment https://www.bigmacktrucks.com/topic/18282-866-running/#findComment-74221 Share on other sites More sharing options...
fjh Posted March 10, 2011 Share Posted March 10, 2011 would be good to take compression before removing head. if a cylinder or valve seat is bad you'll know it before!Loose valve seats were comon on these engines !It wouldn't hurt to pull each valve and tap on the seats with a brass drift while holding your thumb on the other side of the seat .you can feel em vibrate if there loose! Quote Link to comment https://www.bigmacktrucks.com/topic/18282-866-running/#findComment-74229 Share on other sites More sharing options...
Rob Posted March 10, 2011 Share Posted March 10, 2011 Loose valve seats were comon on these engines !It wouldn't hurt to pull each valve and tap on the seats with a brass drift while holding your thumb on the other side of the seat .you can feel em vibrate if there loose!I'm going to take that advice myself. Got two of em that I want to grind the valves and replace the seals at a minimum.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/18282-866-running/#findComment-74234 Share on other sites More sharing options...
ducky698 Posted March 10, 2011 Author Share Posted March 10, 2011 I'm going to take that advice myself. Got two of em that I want to grind the valves and replace the seals at a minimum.RobHi, thankyou for the advice. I cant get a full set of head gaskets tho. only pulling 2 heads. core plugs arrive tomorrow.Grant Quote Link to comment https://www.bigmacktrucks.com/topic/18282-866-running/#findComment-74254 Share on other sites More sharing options...
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