Harley Davidson Evolution Leak

When the company wanted a smaller engine to use in its Sportster family the Evolution 883 was the answer.

Harley davidson evolution leak. All you need is a can of penetrating oil like WD-40 with. Or stalls completely you should replace your intake seals. What is Harley Davidson intake leak.

When this happens some unmetered air finds its way into the motor engine. It applied and it gets drawn in where the gasket leaks. The Evolution engines not only carried forward Bill Harleys original ideas but they also solved the problems that had beset the earlier Harley-Davidson engines problems caused by heat cooling gasket sealing and oil leaks.

Originally offered in a 1340 cc version the Evolution engine was manufactured with aluminum cylinders and heads. Apart from the leaks from the air cleaner and primary chaincase there are other places where oil can leak from on Harley motorcycles. The weeping base gaskets were not a gasketing problem at all but one of engine design.

In 1984 Harley-Davidson introduced the Evolution engine a replacement for its Shovelhead engine. An intake leak usually occurs when there is a fissure in a portion of the intake tract beyond your fuel delivery system. To fix the problem youll have to pull the heads and the cylinders off.

Put her all back together and call it good. The valves are inside the rocker box. If the compression andor leak down test show that top end needs attention you can address the issues and the only wasted time and cost was the time it took to RR just the head and the cost of the gasket.

Harleys dont leak oil they mark their spot. The 1340 Evos are tempermental in that not warming them up enough and riding them moderately hard can cause premature base and head gasket failures. This is a common problem not only on the Evolution Sportster but on the Big Twin Evolution engine as well.