Turn over but won't start...
Chevrolet Blazer 2001 Chevy blazer, 2wd, 4.3 180000 miles
So every day when I first start to crank my blazer, (2001 Chevy blazer 2wd, 2door, 4.3) the motor will turn and turn but not start. If I spray starting fluid through breather and try to start it will crank and run until I cut it off. If it sits for a couple hours it will do the same thing, wont start til I use starting fluid. Rarely sometimes it will crank the second time without fluid. I've changed crank sensor, new battery, cap and rotor, it has ngk iridium plugs, new wires, checked fuel pressure which is at 62, new fuel filter, pump does engage when key is turned. I have fuel, spark, compression. I'm out of ideas. Please help
5 reports
4
JI
Did you check the fuel pressure while it was running, or while it was cranking trying to start? Some pumps when they're going bad will not supply enough pressure to start while cranking, but will while they are running
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KR
It sounds like the Mass Airflow Sensor is bad.
Vote helpfulMU
I have a new fuel pump and spark plugs and wires but he still won't start. Makes a winning sound when trying to start. When he tryes to start it back fires
Vote helpfulKR
I believe timing is way off after all the parts you have replaced. You definitely need to get it on TDC for #1 sparkplug and then make sure the rotor is pointing at the #1 plug wire in the cap. Something similar happened to a Blazer I had just from pulling the distributor rotor out and putting it back in. It turns out that because of the way the gears are cut. When it slides out it turns just a little ahead. When I put it back in I had to start a little before #1 position. Then when it was all the way down it lined up perfectly.
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BO
My 1998 Blazer won't start or hit a lick but turns over just fine,what can be my problem?
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