Blazer no start after tune-up

Tiny
BLACKLIST
  • MEMBER
  • 1995 CHEVROLET ASTRO
  • 105,000 MILES
I have a 1995 chevy Blazer that I brought to a auto repair for a tune-up on Friday morning. After the tune -up it stated once and won't start again. I had the spark plugs change, both intake and exhaust o2 sensor, fuel filter, rotor and distributor cap, oil filter and oil.
Do you
have the same problem?
Yes
No
Sunday, October 16th, 2011 AT 11:15 PM

2 Replies

Tiny
RASMATAZ
  • MEMBER
http://www.2carpros.com/articles/car-cranks-but-wont-start

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing

If both fuel and spark is present-check the valve and ignition timing, this will lead you to problems
with compression and valves opening and closing at the wrong time/broken or jumped timing
belt/chain.
Was this
answer
helpful?
Yes
No
Sunday, October 16th, 2011 AT 11:22 PM
Tiny
ASEMASTER6371
  • EXPERT
Is it still at the shop? Did they diag it for you? It ay be a bad cap or rotor if it lost speak. Fuel pressure needs to be verified as well.

Roy
Was this
answer
helpful?
Yes
No
Sunday, October 16th, 2011 AT 11:24 PM

Please login or register to post a reply.

Recommended Guides