stupidboat101
New member
I have a 73' mercruiser 165 inline 6. It was running bad so I took the head off, found water in cylinder 5 and 6, turns out the manifold gasket was to blame. new head gasket goes on, new manifold gasket, new carb to manifold gasket and new head bolts. now I put it all back together and theres a ticking only under load. I've adjusted the rocker arms 3 times already. I can see smoke coming from the choke tube inside the manifold. do you think this could be the cause? I plan on drilling out the tube and tapping both ends and putting a brass plug in both. I should say the boat only taps under load. I can rev it in neutral and no tick, and I can put the muffs on and rev it in gear and I get no tick..... only in the lake does it tick and its driving me nuts! any help is appreciated.