1995 chevy blazer

1995 CHEVROLET BLAZER
Avatar
JASONWOOD1
  • MEMBER
  • 3 POSTS
have a 1995 chevy blazer 4.3. Started by producing a p0300 code (random misfire). Started replacing parts 1 at a time with no change. Spark plugs, plug wires, distributor cap, rotor, catalytic converter, plenum gasket, intake manifold gasket. After I changed the intake manifold gasket I didn't set the timing right so the engine backfired. Reset the timing and the engine would not crank. Found a leaking fuel line inside the plenum and replaced it but engine still will not crank. I don't know where to look now.
Sep 21, 2012 at 11:15 PM
Advertisement
Avatar
HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
check fuses and relay underhood first. see if starter is getting power on the purple wire.
Sep 21, 2012 at 11:36 PM
Avatar
JASONWOOD1
  • MEMBER
  • 3 POSTS
It is turning over. It just does not crank.
Sep 22, 2012 at 12:40 AM
Advertisement
Avatar
HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
you mean it turns over but wont' start. scan for codes and check fuel pressure first
Sep 22, 2012 at 12:54 PM
Avatar
JASONWOOD1
  • MEMBER
  • 3 POSTS
Okay here is what I found. No codes are set at the moment. Firing system is doing fine and I'm getting fuel. I'm thinking timing. Does it sound like I'm correct?
Sep 23, 2012 at 7:46 PM
Avatar
HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
yu can be getting fuel to the rail bu tnot enough pressure.what is it. There are so many possibilities I suggest continuing the process of elimination you started. I am going to give you 2 diagnostic walk throughs. One for "No Start" and one for "Mis Fires". When they mention pulling codes, testing things like the alternator, battery or staer, etc. and doing tests like fuel pressure, Advance Auto or Auto Zone will pull codes for free and test electrical parts for free. They also have specialty tools and test tools they give out on a loaner basis. So, follow through the walk though as it goes in order for a reason. Just use the links below;

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

https://www.2carpros.com/articles/car-cranks-but-wont-start
Sep 23, 2012 at 8:52 PM