Question about 1998 Chevrolet Blazer

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I have a 98 chevy blazer that will not start unless we s pray starting fluid in it we have replaced the fuel pump, injectors, distributor, and throtle body. All the pressures are fine. What else could it be? Could it it be the computer or the crank sensor?

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I have a 98 checy blazer it wont start but i kno its not the fuel pump cause i purged it from underneath the hood and i can hear the pump coming on

Posted on Apr 29, 2010

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Spark plugs are the easy thing to check. Then make sure you put the distributor back on Number One top dead center so the sensors can retime them self.If you installed the distibutor by using number one on tdc use a timing light to adjust the timing by rotating the distributor.

Posted on Apr 28, 2010

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Before u change anything else,,,,put a scanner on it ,,snap on,, mac ,,metco,,& while cranking it reed the variables in each , to even see if their work in ,,or get a spark tester,,their cheep,,plug it in,,turn motor over,,if no spark,,could be pickup coil,,cam,,or crank censer,,hoped it helped

Posted on Apr 28, 2010

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1 Answer

98 Chevy blazer won't start up but will crank ,,


Try giving it a shot of starting fluid. You don't say if it's actually firing. If it tries or runs for a few seconds off of the starting fluid then try changing the fuel pump relay. It's inside of the glove box on the left hand side behind the little door. If that doesn't work it's most likely the fuel pump.

Jul 21, 2011 | 1998 Chevrolet Blazer

3 Answers

I bought a 1997 Chevy Blazer that was not running. I put a new battery in it and checked for spark. It had spark going to the main wire on the distributor, but the fuel pump was not pumping. I sprayed...


An engine needs 3 things to run fuel, spark, and air, but they must occur at the proper time, that being said, buy, or borrow a noid light. This is a light that you can plug into the injector to see if it is getting the pulse from the computer, do not use a test light, you will fry the computer for sure. If the injector pulse is there you have to check the timing to be sure the timing chain has not jumped. Bring the number one cylinder up on top dead center of the compression stroke, then pull the distributor cap off and make sure the rotor is pointing at the place on the cap where the number one wire is hooked on. If it is the timing is good, if not it is possible that the timing chain has jumped or someone has installed the spark plug wires incorrectly.

Jul 25, 2010 | 1997 Chevrolet Blazer

2 Answers

I have a 1998 Chevy Blazer 4.3 Vortech that will not start.


You may want to check your fuel regulator and check your injectors. Had the same issue with a 96 and replaced the whole CSFI spider assembly with a MFI spider assembly and problem was solved.

Dec 29, 2009 | 1998 Chevrolet Blazer

2 Answers

Fuel injectors not working


i suggest you do three things: 1) get a noid light and check that the proper signals are being sent to the fuel injectors to insure they are being told to fire 2) spray some starting fluid in the throttle body and see if it starts. if it does, the problem is fuel related. if it doesn't, you have a spark problem 3) do you hear the fuel pump come on for a few seconds when you turn the key to "on" but not start the engine? if not, check the ground wire for the pump located between the gas tank and rear bumper.

good luck.

Nov 07, 2008 | 1992 Chevrolet S-10 Blazer

1 Answer

Blazer 98 4x4


I would check the basic things first. Battery Terminals, the Battery itself, gas in the tank, then the probable cause a faulty fuel pump. A quick check of this is to take the air horn t-nut off the 3 inch t handle screw which holds it and spray starting fluid in the throttle body. Do not open the throttle body like an old careburator just spray it in their, put the air horn back on and if it starts it's a probable fuel pump. You can also try to turn on the key three times but do not start it those three times just see if the fuel pump sounds like it's working. On the third try turn the key fully on and if it starts it's a probable fuel pump. If so Google under 100 dot com and they have blazer fuel pumps for 60 or 70 dollars. A fuel pump from an auto parts store will cost you from 250 to 300 dollars. I wish you the best of luck becuase I have replaced four fuel pumps in my own blazer. Good Luck!!!

Sep 06, 2008 | 1998 Chevrolet Blazer

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