- Check for leaky intake manifold, clogged muffler and leaky, burnt or sticky valves
- Diagnose incorrect timing
- Determine accurate fuel pump pressure
- Locate leaks in gas line
- 3-1/2" multi-colored gauge has English and metric scales: 0-28" vacuum and 0-10 psi pressure
- Complete with hose, (3) fittings and operating instructions
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