MY HUSBAND HAS PROBLEMS WITH HIS CAR CHUGGING AND RUNNING ROUGH AND STALLING
1991 Mazda 121
December, 3, 2011 AT 12:34 AM
He has changed spark plugs, leads and fuel filter. The problem has only been happening for a couple of weeks. He has also checked the manual for the car and cant find any information on fixing the problem.
The first things to check for are vacuum leaks and proper fuel pressure.
Here is a good diagnostic walk through that covers other possibilities and helps further ezplain how to find vacuum leaks nad check the fuel pressure.