Re: Timing advance springs in distributor - don't

Posted by Bob M on December 10, 2004 at 09:19:31 from (151.190.254.107):

In Reply to: Timing advance springs in distributor - don't matc posted by Bradford253 on December 10, 2004 at 07:45:32:

Brad - According to the SH parts book the distributor springs are an identical pair (part no. 358 108 R91). However as Bob observes below it is not unusual for different springs to be mixed to “fine tune” the timing advance curve. Note however that even small changes in spring rates can have a dramatic effect on good running and fuel economy – if in doubt of what springs you’ve got I’d install a new pair of the correct springs.

However your stumbling problem is more symptomatic of a lean carburetor condition. [If the distributor advance was messed up you’d get backfiring out of the carburetor and possible knocking (springs too weak) or low power and possibly flames out the exhaust (springs too stiff)]. Anyway either the carb high speed screw is set too lean, there’s a partial blockage in the high speed circuit or the float level is set too low.

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