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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Chevrolet Blazer 4x4 (Mid Size): Engine will turn over but

Customer Question

Engine will turn over but wont start changed ignition switch but still wont start

Submitted: 2 years ago.
Category: Chevy
Expert:  Gary replied 2 years ago.
I am sorry your having this problemwill the engine physically crank over and not fire up ?or it will not physically crank over at all ?
Customer: replied 2 years ago.

It will physically crank over but wont start

Expert:  Gary replied 2 years ago.
is the check engine light lit up in the dash with the key ON ?will it somewhat run on starting fluid ?
Customer: replied 2 years ago.

Yes the check engine light is on with the key on and no it wont run at all just keeps cranking and wont physically start

Expert:  Gary replied 2 years ago.
can you see if you have spark out of the ignition coil ?did this happen out of the blue one day ?nothing was done to where now you have this problem ?
Customer: replied 2 years ago.

Changed the fuel pump about a year ago

Ever since then it hasn't started right since but now a year later it wont start at all

Also just changed the ignition switch yesterday

Expert:  Gary replied 2 years ago.
ok with this engine not starting we are missing spark or fuel or compressionwhen cranking it over see if you have spark and also when cranking it over what is the security/theft light doing in the dash ?
Customer: replied 2 years ago.

I checked one of the plugs from the coil pack yesterday and didnt have spark but gonna check the rest of them today for spark

Expert:  Gary replied 2 years ago.
ok let me knowif no spark see if you have spark out of the coil
Customer: replied 2 years ago.

When trying to start it the security light goes away

Expert:  Gary replied 2 years ago.
ok see if you have sparksee if it will somewhat run on starting fluid
Customer: replied 2 years ago.

Coil has spark

Expert:  Gary replied 2 years ago.
ok spark out of the coildo you have spark at the spark plug wires where they connect to the spark plugs when cranking it over ?
Customer: replied 2 years ago.

Just put on a brand new cap and roter still have spark from coil and my hands dont fit trying to get to the plugs themselves

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