dee duck 12/21/2011
1988 GMC R1500 Suburban Sierra Classic 8 Cyl 5.7L
No gas in carberater fuel into card. but not out of twin injection
How long since a tune-up? Any applicable trouble codes? Use a gage and check fuel pressure. Check for an injector pulse, check for voltage and ground at the injector. If the computer doesn't see an rpm signal, no injector pulse.