vic008 17 Posted September 2, 2019 Share Posted September 2, 2019 Out for a few days, and shutting motor down, she was making some odd noises. Wouldnt start this am,took tappet cover off, and big spanner on flywheel and turn her (check tappets ok)and turns free then comes to a sudden stop! Help please. Should I try turning her backwards? Quote Link to post Share on other sites
Steve Pope 255 Posted September 2, 2019 Share Posted September 2, 2019 Don't turn it backwards!!! Quote Link to post Share on other sites
vic008 17 Posted September 2, 2019 Author Share Posted September 2, 2019 Unfortunately spun her over on the starter this am. Cant be helped. Yes can rock her but then she comes to the spot where she stops. What are the bad scenarios? What tests before head off? Dread sailing home -20m. Wind here so fluky Quote Link to post Share on other sites
Ladyhawk 37 Posted September 3, 2019 Share Posted September 3, 2019 Sounds like its dropped a valve... you might be able to see which one with the tappet cover off, not that it helps you much out there. CG member? Quote Link to post Share on other sites
wheels 544 Posted September 3, 2019 Share Posted September 3, 2019 Sorry Vic. this doesn't sound good. A solid dead stop means a serious obstruction. Scenarios...... Valve head broken and fallen into cyclinder. Conrod has broken and is jamming against the bottom of bore. Crankshaft is broken. Cam must be OK if you saw all tappets working, so that's ruled out. A bolt has come out of Big end bearing and jammed.You should find that in all scnearios, the engine will stop at same point. Mark the flywheel and buy hand, if you turn flywheel backwards, does it jam at ruffly same position. If yes, then any of the above are possible.If not, then it could be a component in part of the engine that is geared down. Like the Fuel pump for example, may jam at fourth Revolution or some other random point.No matter what, sorry but you are going to need a tow home, or sail it home if conditions are right for you. 1 Quote Link to post Share on other sites
vic008 17 Posted September 3, 2019 Author Share Posted September 3, 2019 Ordered up a tow. (No coastguard here) So sounds like head to come off for a start? Quote Link to post Share on other sites
Winter 42 Posted September 3, 2019 Share Posted September 3, 2019 could be water in a cylinder, cant compress so piston stops dead. remove injector and you may be able to insert a straw Quote Link to post Share on other sites
Island Time 1,312 Posted September 3, 2019 Share Posted September 3, 2019 Usually if it's mechanical you can hear the metalic clank as the crank hit the broken rod or whatever. If it's water, removing the injector and then turning it over will give you a shower.... Quote Link to post Share on other sites
DrWatson 382 Posted September 5, 2019 Share Posted September 5, 2019 Updates? Quote Link to post Share on other sites
vic008 17 Posted September 5, 2019 Author Share Posted September 5, 2019 Struggling to undo headnuts. Quote Link to post Share on other sites
wheels 544 Posted September 5, 2019 Share Posted September 5, 2019 Get a bigger hammer OK so now for the serious reply, get a decent hammer and a large pin punch. Place punch on head of bolt and smack the punch hard. Then try to undo it. Quote Link to post Share on other sites
vic008 17 Posted September 7, 2019 Author Share Posted September 7, 2019 Borrowed a battery rattle gun. Little machine screw still jammed in inlet valve, so could be worse. Where from? - no idea Quote Link to post Share on other sites
Winter 42 Posted September 7, 2019 Share Posted September 7, 2019 there should be a breather pipe in head, which may have a gauze held in place by a cover which would may be held in place by a small machine screw? or part of air filter housing? Quote Link to post Share on other sites
Island Time 1,312 Posted September 7, 2019 Share Posted September 7, 2019 Could be worse, pretty easily fixed then. Examine the valve and seat, the valve might be bent. Is there a dent in the associated piston? If not, re-lap the valve and seat with valve grinding paste, and ensure the seal on both comes up ok. If it does, then new gasket, re-assemble. Find where the screw came from, and locktite it back in ( if it’s serviceable). Have a great summer boating, If it doesn’t, the head will have to go to a machine shop to have the seat and valve re-done. Quote Link to post Share on other sites
vic008 17 Posted September 14, 2019 Author Share Posted September 14, 2019 Poor screw flattened as.Danged if know where from. Must have been sitting in the cleaner, but no empty holes. Indents in piston top that I,ve smoothed down, but still there. Gave head to reconditioners. Quote Link to post Share on other sites
Steve Pope 255 Posted September 14, 2019 Share Posted September 14, 2019 Is there a butterfly valve in the inlet manifold? They are generally held in place with a smallish machine screw holding them to the pivot shaft. If there is and the screw has done what it has done and is missing the next thing to travel towards the valve could be the butterfly plate. Quote Link to post Share on other sites
vic008 17 Posted September 20, 2019 Author Share Posted September 20, 2019 One bent inlet valve. Cant straighten?Anybody got a spare? Not available ex factory. They can make me a new one here.aka Ford 1100(diesel twin) Quote Link to post Share on other sites
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