Dwell Angle Check And Visual Check Of Pick-Up Coil Assembly
Check trigger wheel and pick-up assembly for damage. Also check visually for air gap between trigger wheel and pick-up coil. See Figure. If damaged or if air gap is not to specifications, replace distributor (if components cannot be replaced individually). Check dwell angle and compare with specifications. If not within specifications, repeat Pick-Up Coil Resistance, Short and Visual Checks. If OK, then replace control module.
Dwell Angle & Air Gap Specifications
| Application |
Dwell Angle @ RPM |
Air Gap In. (mm) |
| BMW |
32-53°@1500 |
014-.028 (.36-.72) |
| Fiat Strada & X1/9 |
|
.012-0.019.3-.5) |
| Mercedes-Benz |
7.25°@ |
|
| Porsche |
| |
911SC |
|
|
| |
928 |
25-39°@1500 |
|
| Saab |
60-80°@ |
|
| Volvo |
| |
4-Cylinder |
45-63°@1500 |
|
| |
6-Cylinder |
45-60°@1500 |
|