I put a KrankVent on and oil still blows from the engine! Whats wrong?
A3. If you have a crank case timed breather (Bottom Breather), there are several things that need to be checked as noted in the instructions. First, the engine must be airtight in order to maintain the vacuum. Loose oil tank caps and fat pushrods rubbing the pushrod tubes with a high lift cam are often overlooked. A Kinked hose between the engine and KrankVent, or using too soft a hose that collapses under a vacuum is another area to check. Some installers have connected the KV to the oil tank breather line or even the transmission breather — these won’t work! “Head Breathers” can check the above plus have additional problems. The umbrella valves in the heads, if they work in the beginning, usually fail quickly. The new KrankVent Kits for different applications have special KrankVents and instructions for each application, and will solve the 99% of the problems — follow the instructions. For the remaining 1% remove the umbrella valves so they do not interfere with the KrankVent opera
