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Author	Topic: 351W backfiring questions
soneal Journeyman Posts: 1 From: Salinas, CA Registered: Apr 2004	posted 04-26-2004 07:06 PM My 351w is having backfiring problems (up thru the carb.) when I accelerate quickly but not when I accelerate slowly.Can anyone suggest what the problem may be? IP: Logged
SteveLaRiviere Administrator Posts: 43790 From: Saco, Maine Registered: May 99	posted 04-26-2004 07:22 PM Assuming there are no vacuum leaks, you have an accelerator pump failure or maladjusted. ------------------ '70 Mustang Mach 1 351C 4V/FMX/3.25 Open '70 Mustang Convertible 250 I6/3 speed/2.79 Open '72 Mustang Sprint Hardtop 351C 4V/FMX/4.30 Trac Loc '94 F-150 XL 5.8L/E4OD/3.55 Limited Slip IP: Logged
NJfourwheeler Journeyman Posts: 6 From: NJ,USA Registered: May 2004	posted 05-11-2004 02:32 PM Firing order? 351W and 302HO are the same, all other 302/289 are different. IP: Logged
wvcat Gearhead Posts: 290 From: New Cumberland,WV Registered: May 2001	posted 05-11-2004 10:20 PM Sounds like the vacumn advance could be stuck. pull the distributor cap off and see if the breaker plate will move freely. Could be a timing issue also. John wvcat ------------------ Thanks John (wvcat) http://www.geocities.com/wvxr7cougar/wvcat_01.html?989286238390 70 XR7 Restomod...wvcat 66 coupe project...she needs a name!!! IP: Logged

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