My husband has problems with his car chugging and running rough and stalling

1991 MAZDA 121
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KAYE MCQUEEN
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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.
Dec 3, 2011 at 12:34 AM
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DRCRANKNWRENCH
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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.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough
Dec 3, 2011 at 12:40 AM