Winter Brew
Active VIP Member
This probably isn't your issue, but the Pros I have spent time around have all had electrical issues that have caused gremlins similar to what you describe.....hesitations, inconsistent rpm, no reverse etc.... The causes of these issues on our Pros had simple fixes. There is a ground strap to one of the front bumper bolts, make sure it is not corroded. That may sound goofy, but on our 13 Pro it cured several running issues as it was badly corroded on a new sled. There is a hole above the stator on the case, cover this with tape to keep water out. Unplug all electrical connectors and pack them with dielectric silicone grease. These have taken care of the issues WE have seen on the Pro.
I would also have fuel pressure checked.
120 psi compression may not be an issue depending on what altitude it was checked. Also, higher exhaust port timing will show lower compression on a gauge but result in higher running compression as it allows more time for the expansion chamber to stuff the cylinder. I would talk to Carl's about what you should see for compression.
I would also have fuel pressure checked.
120 psi compression may not be an issue depending on what altitude it was checked. Also, higher exhaust port timing will show lower compression on a gauge but result in higher running compression as it allows more time for the expansion chamber to stuff the cylinder. I would talk to Carl's about what you should see for compression.
long story.
