Have a Wisconsin VH4D engine in my old skid steer. Rebuilt it a couple winters ago w/ new pistons & bearings & all. It’s been running super, far better than anytime since I owned it.
Last night however, I was using it and a strange hissing sound started. At first I thought it was a manifold exhaust leak somewhere, but on closer examination it appears one of the heads has a hairline crack across it just below the sparkplug. Haven’t removed the head yet but just wondering what the likely causes of this might be? I torque the heads to the specs and sequence in the manual.
Hadn’t used it that long or hard last night when it started.
Tim
Last night however, I was using it and a strange hissing sound started. At first I thought it was a manifold exhaust leak somewhere, but on closer examination it appears one of the heads has a hairline crack across it just below the sparkplug. Haven’t removed the head yet but just wondering what the likely causes of this might be? I torque the heads to the specs and sequence in the manual.
Hadn’t used it that long or hard last night when it started.
Tim