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1991 Mercedes-Benz 420SEL 4.2L Poor Idle Quality, Misfire
has miss at idle. only will smooth out when it is cranked up [...] adjust the mixture so that o2 will read the mixture going rich and then lean but then the car is putting hc out the tailpipe till it stinks the whole shop up. idle speed is to high when o2 read...
FIX posted 8/21/1998
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| VIN | WDBCA35E4M |
| Engine | 4.2 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / efi |
| Emissions | fed emissions |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Idle |
| Misc. | 116.965 Engine |
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Vehicle Data
1991 Mercedes-Benz 420SEL
| VIN | WDBCA35E4M |
| Engine | 4.2 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / efi |
| Emissions | fed emissions |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Idle |
| Misc. | 116.965 Engine |
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