Proper fuel pressure testing should include a volume test, a bleed down test, cranking pressures, as well as fuel pump power and ground testing. This quick video covers all of this and more. For more automotive diagnostic training visit my website www.scannerdanner.com Here is the link to this full length video on YouTube https://youtu.be/PvAcjWXJu94 BTW this truck is fixed and I was able to film the after repair data. I will have this uploaded after we complete our Mustang series. Thank you! |
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Fuel psi is in spec at idle. Is that good enough of a test? ABSOLUTELY NOT! Weak Fuel pumps can keep up during times of low volume (idle), so psi must be tested during high volume conditions. 1. snap throttle to wide open/redline RPM and make sure psi doesn't drop during the rev 2. also check for a bleed down issues https://www.scannerdanner.com/join-scannerdanner-premium.html | ScannerDanner
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