91 s10 blazer 4.3 liter

1991 CHEVROLET S-10
124,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
EMMELL2560
  • MEMBER
  • 4 POSTS
91 s10 blazer 4.3 just installed new distributor have spark, have fuel, engine will not start just's turns over
Apr 2, 2011 at 9:12 PM
Advertisement
Avatar
JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
Were you having this issue, before you worked on it? If the computer doesn't see an rpm signal, it won't pulse the injector/s. With bypass ignition system and o/p switch in the fuel pump circuit, it is possible to have spark at the plugs and fuel pressure,engine cranking, even though the computer doesn't see an rpm signal,but, no rpm signal, no injector pulse.
Apr 2, 2011 at 9:22 PM
Avatar
JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
If TBI, can you see injector spray pattern, engine cranking?
Apr 2, 2011 at 9:23 PM
Avatar
EMMELL2560
  • MEMBER
  • 4 POSTS
Blazer was running fine and just shut off like someone had turned off ignition switch. Had bad pickup coil in distributor so I replaced distributor, cap, rotor, wires. Can smell and see fuel in tbi after cranking. Where do I go from here? Thanks Chris
Apr 2, 2011 at 11:38 PM
Avatar
CADIEMAN
  • CAR REPAIR CONTRIBUTOR
  • 3,544 POSTS
if u replaced the complete dist. u need 2 remove it get the motor on top dead center then put it back in with the rotor pointing to the #1 wire on the dist. cap.
Apr 3, 2011 at 12:11 AM
Avatar
EMMELL2560
  • MEMBER
  • 4 POSTS
Thought It might be a timing issue will try in am when i can see. Was having a hard time reading degrees on pointer to find zero. Do you know which end of pointer 0 is at?
Apr 3, 2011 at 12:28 AM
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Also check the fuel pump and oil pressure switch
Apr 3, 2011 at 8:20 AM
Avatar
EMMELL2560
  • MEMBER
  • 4 POSTS
I have fuel in tbi. where is the oil pressure switch? Do you mean sending unit? and how do I test it to see if it's bad?
Apr 3, 2011 at 2:25 PM
Avatar
CADIEMAN
  • CAR REPAIR CONTRIBUTOR
  • 3,544 POSTS
if u removed the dist. and didnt put it back right the engine is out of time.
Apr 3, 2011 at 4:26 PM
Avatar
CADIEMAN
  • CAR REPAIR CONTRIBUTOR
  • 3,544 POSTS
parts store will have the firing order and location of #1 wire on the dist.cap.then install the wires going clock wise. gl
Apr 4, 2011 at 6:12 AM
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
F/O clockwise 165432
Apr 4, 2011 at 6:26 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.