× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1970 Ford F-250 6.4L Backfire low power
Posted to Ford Driveability on 4/21/2020 22 Replies

Lacks power under acceleration. Randomly backfires through the carburetor. Idles [...] discrpancy between cranking and running compression tests is puzzling. Confirmed cam timing with Picoscope.

22 Replies Received (View Replies)

  Related Documents & Media  1970 Ford F-250

 
Message Closed w/FIX

car Vehicle Data

1970 Ford F-250

VIN F25YKJ1475
Engine6.4 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryCarburetion / 2BBL Autolite 1450
EmissionsNone-PCV
SymptomsBackfire Low Power
OccursUnder Load, Under Load
Message Closed w/FIX

car Vehicle Data

1970 Ford F-250

VIN F25YKJ1475
Engine6.4 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryCarburetion / 2BBL Autolite 1450
EmissionsNone-PCV
SymptomsBackfire Low Power
OccursUnder Load, Under Load