1988 Ford Ranger - Question on rough idle

Maintenance/Repairs
1

would a bad fuel regulator keep it from idling properly

2

Yes. If it’s leaking it can.

Remove the vacuum hose from the regulator, and if gas leaks out of the connection the regulator’s bad.

https://www.rockauto.com/en/catalog/ford,1988,ranger,2.3l+140cid+l4,1137596,fuel+&+air,fuel+injection+pressure+regulator,6124

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