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Car Forum / Ford / Ford Trucks / September 20061988 Ford Bronco II - WHERE IS MY COOLANT GOING??????
My 1988 Ford Bronco II loses about 2 quarts of coolant on every 100 mile trip. 2.9, 6 cylinder engine, 187,000 miles. Engine has made a slight tapping noise for a long time but runs good otherwise. Have never seen a single drop leak out except when I overfill it. Radiator pressure tested and no leaks found. Mechanic said seal on radiator cap was the only problem and replaced it and charged me for a new one. Still the exact same problem! WHERE THE HECK IS THIS STUFF GOING????? Any ideas here would be appreciated. > My 1988 Ford Bronco II loses about 2 quarts of coolant on every 100 mile > trip. [quoted text clipped - 14 lines] > > Any ideas here would be appreciated. Considering the notoriety of head gasket failure in the Ford 2.9L V6, there's a real strong probability that the coolant is going out with the exhaust. Been there. > My 1988 Ford Bronco II loses about 2 quarts of coolant on every 100 mile > trip. [quoted text clipped - 14 lines] > > Any ideas here would be appreciated. Head gasket... Inspect your spark plugs. I'd expect one of them is feeling a little green. >My 1988 Ford Bronco II loses about 2 quarts of coolant on every 100 mile >trip. [quoted text clipped - 14 lines] > >Any ideas here would be appreciated. OK probably a head gasket. If I have to change this would it make sense to get new heads too? Do you think this might stop the tapping noise? thanks, Howie > Inspect your spark plugs. I'd expect one of them is feeling a little > green. [quoted text clipped - 18 lines] >> >>Any ideas here would be appreciated. > OK probably a head gasket. > [quoted text clipped - 4 lines] > thanks, > Howie New heads would mean valves that seal really well, against piston rings with 187,000 miles on them. Now is the time to go through the engine if you want to keep this Bronco II.. Otherwise if sure its head gaskets, just do the gaskets. Whitelightning >> OK probably a head gasket. >> [quoted text clipped - 13 lines] > > Whitelightning Are you certain that the valves are adjusted properly? Ford issued a Technical Service Bulletin that amended the spec for valve lash. Originally, it was 1 1/2 turns from zero lash. The TSB changed it to 1 3/4 turns. If valve clatter is the source of your tapping, adjusting the valves correctly (during engine reassembly in the head gasket project) might eliminate the problem. Greetings fellow Bronco II driver, I suggest that your missing coolant may be going out your exhaust system via a crack in a cylinder head in the intake valve area. Can you detect a faint antifreeze odor at the tailpipe? No, then suspect a crack in the exhaust valve area which would direct some amount of exhaust into the water jacket and probably cause coolant to be forced out the overflow. Idleing the engine with the radiator cap off and the radiator completely full would produce bubbles of exhaust in the coolant on a fairly continual basis also. 2.8 and 2.9 heads are somewhat prone to cracks. Could be a Gremlin of coarse! Tap Goodenuff >My 1988 Ford Bronco II loses about 2 quarts of coolant on every 100 mile >trip. [quoted text clipped - 14 lines] > >Any ideas here would be appreciated. |
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