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Aloha All,
My son has had a recurring problem with his older truck. This is a 70's vintage truck with a carburated engine, hydraulic lifters and smog controls removed. A previous engine that had been recently rebuild developed what appeared to be high crank case pressure as large quantities of oil were blown out of the valve cover breather. That engine was replace a few weeks ago and within a week or two the same situation developed. Worn rings seemed the apparent problem, but compression is fine. I think the removal of the smog controls and plumbing rerouting may be the problem. There is a hose running from the valve cover to the intake manifold, could this be sucking oil by creating a strong vacuum in the valve cover? It just seemed odd to me that two engines would have the same problem in such a short time.
Safety Fast,
Dave
My son has had a recurring problem with his older truck. This is a 70's vintage truck with a carburated engine, hydraulic lifters and smog controls removed. A previous engine that had been recently rebuild developed what appeared to be high crank case pressure as large quantities of oil were blown out of the valve cover breather. That engine was replace a few weeks ago and within a week or two the same situation developed. Worn rings seemed the apparent problem, but compression is fine. I think the removal of the smog controls and plumbing rerouting may be the problem. There is a hose running from the valve cover to the intake manifold, could this be sucking oil by creating a strong vacuum in the valve cover? It just seemed odd to me that two engines would have the same problem in such a short time.
Safety Fast,
Dave