Sea-Doo GTX Di had a running issue where the ski would perform until the engine was warm and then it would shut down.The customer assumed the rectifier was the issue.We checked fuel pressure at start-up of 25-27 PSI and running at 105 – 110 Psi and these were in spec. After Some testing, we found that the fuel pump was shutting down after 10-15 minutes of use.We installed an inline pressure gauge and rode the ski.We also found that the fuel pump filter’s internal and external were bad expected.