sgtbob

I have an 87 F-150. i noticed coolant leacking from the front of the engine. so i proceeded to replace the waterpump and thermostat. Of coarse murfee allways finds me and the bolts broke off, so i had to remove the timming cover. and the timming chain and sprockets where about done. so i replaced them. when i got it all back together and went to crank it the chain jumped off the sprocket. i figured it was just my dumb luck and replace the chain and sprockets again. it jumped off agian please help
Thanks

clevo

What timing chain did you replace it with? How much slack was there in the new chain after you installed it? When you put the chain on was it a firm fit to get on, my last one took a bit of leveraging to get on.

sgtbob

not sure what brand the new timming sets where. the new chains went on tight had to put a little elbow grease to get it on. no slack in the chain after it was installed

thanks

brenx

For something like that to happen surely;

a) cam bolt was loose? or
b) dowel in the camshaft snapped?

I've seen this happen in Holden 253/308's. Sometimes they got away with it.

Brenden

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XB Fairmont (street car) 11.07@123.02mph.