A vehicle has lean trims at idle and load. Fuel pressure is correct, but injector balance testing shows low drop across all injectors. What is the most probable cause?
Our free L1 practice questions act as a diagnostic tool to give you a clear snapshot of your Automotive Service Excellence Level 1 readiness. Discover which topics are your strengths and, more importantly, which critical topics require your immediate attention.
| Name | Automotive Service Excellence Level 1 |
| Code | L1 |
| Vendor | Skilled Trades |
| Certification | ASE |