Join Date: Mar 2016
Location: Lake Mary, Florida
Re: white smoke and a knock/tick noise??
If you are seeing smoke from the engine compartment, you either have an oil leak (I'd suspect a valve cover gasket, or manifold gasket or crack in manifold/headers), or you may have a coolant leak that is somehow getting onto the hot exhaust. Are you loosing coolant over time?
Ticking coming from the passenger side; could be a stuck lifter or rocker arm/lifter out of adjustment. Is this big block a manual or hydraulic lifter type engine? Manual lifters require adjustment from time to time. Or, a broken valve spring, bent rocker arm, loose rocker bolt (stripped maybe), or a bent valve can cause the ticking, creating "slop" in the adjustment. If the valve cover is leaking oil, it may have been because a previous owner was trying to correct the ticking noise due to what I mentioned, and reused the valve cover gasket when valve cover was reinstalled, and is now leaking oil onto the exhaust manifold/headers, causing the smoke you are seeing.
If you're mechanically inclined, remove the passenger side valve cover, and see if you have anything broken or bent, if it looks OK, check the adjustment (valve lash) of each cylinder. This will require you to rotate the engine to get each cylinder (one at a time) to its TDC (Top Dead Center) position, and then adjust the valve lash by tightening/loosen the rocker arm nut. Hydraulic lifters are easier to do; manual lifters require the engine to be warmed up, then you use a feeler gauge to adjust a gap between the rocker arm and top of valve stem. By using a large wrench and correct socket, you can rotate the engine from the lower pulley/harmonic balancer to get each piston (one at a time) to its TDC position (both valves will be closed).
Not hard to do if this is what is found to be the reason for the ticking sound. In any event, use new valve cover gaskets if the valve covers are removed, especially if they are leaking, and causing your smoke issues.
Never argue with an idiot; they'll only drag you down to their level, then beat you with experience.
Last edited by bucko; Dec 14th, 18 at 05:26 AM.