Q: Turns over but won't start.. 2001 Chevrolet Blazer

asked by on

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

My car has 180000 miles.
My car has an automatic transmission.

Hello - your symptoms and diagnostic efforts still make me suspect that there isn’t adequate fuel pressure when you first try to crank it. The fact that it sometimes starts on the second effort reinforces this. If the fuel check valve/fuel pressure regulator is allowing the fuel pressure to completely drop overnight, the fuel pump has to run longer to bring pressure up to where the injectors actually deliver fuel. Leaving the fuel pressure gauge attached overnight, so that you can watch fuel pressure on first startup will provide guidance as to whether this is the case. I recommend a hard start inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Turns over but won't start.. 2001 Chevrolet Blazer

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Cannot start car daily with unless using starter fluid

Working with starting fluid can be pretty dangerous. One backfire and you can lose your eyebrows in a flash...or worse. That said: a car that is hard to start when cold could just have an air leak. Look for any...

Q: I have a whining squealing noise coming from somewhere in my pulley system and serpentine belt.

If the noise changed when the battery was replaced, I would first suspect the alternator. Sometimes, when a bearing/bushing starts to go bad it will only make noise with the belt installed, as the tension can cause pressure to be...

Q: 2002 blazer 4x4 zr2 abs brake light stays on.

You would need to have the system scanned to see what the feedback the ABS light is giving. From there, you would need to turn off the light after the system is reset to see if it comes back. You...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...