OK Folks here is the problem. I have a set of pitted JWT S4 cams on my race car. I want to replace them with JWT S4 high lift cams. We have tried to install the HLS4 cams wice and we keep running into the same problem.
When we put the HLS4 new cams in we get a misfire in cylinder number 1 and the spark plug gets fouled with gas. It only happens in cylinder number one. When we go back to the old S4 cams the problem goes away and the car runs fine.
We tried going with the thinnest shims for the rocker arms but that did not work either. The only possibility left are the Hydraulic Lift Adjusters. What could go wrong with these? Could they get stuck ar a certain level and refuse to adjust to the newer lift on the cams?
What else could be wrong?
When we put the HLS4 new cams in we get a misfire in cylinder number 1 and the spark plug gets fouled with gas. It only happens in cylinder number one. When we go back to the old S4 cams the problem goes away and the car runs fine.
We tried going with the thinnest shims for the rocker arms but that did not work either. The only possibility left are the Hydraulic Lift Adjusters. What could go wrong with these? Could they get stuck ar a certain level and refuse to adjust to the newer lift on the cams?
What else could be wrong?