Discussion Starter · #1 ·
F,I.L. has a 99 yukon 5.7 vortec. It will crank but will not start, Fuel pressure is 63lbs with key on and 68 while cranking. It has a strong spark on all cylinders. cant figure out whats going on. Hooked up an obdII scanner it has no codes. Please help , I need this thing out of my driveway.