Question about 2002 Chevrolet Blazer

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2002 chevy blazer wont start got fuel to engine

Do not know if engine is getting spark

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  • 93 Answers

You can check for spark by stick screwdriver in disconnected spark plug wire and hold close to ground metal, such as valve cover and see if you get a spark. Be careful, these voltages are very high. If you don't have a spark then trouble shooting is narrowed down.

Posted on Jan 15, 2013

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Posted on Jan 02, 2017

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  • 124 Answers

SOURCE: 2002 chevy Blazer hard starting

i agree with the fuel pump problem this is quite common with these trucks. but the fuel injectors on this motor are not accesable without removing the plenun and they are not standard fuel rail injectors so you can not test as earlier instructed.

Posted on Dec 04, 2008

  • 124 Answers

SOURCE: 2002 chevy blazer fuel pump (4 door)

yes you have to drop the tank. you will also need a fuel line tool to unhook the fuel lines. before you drop the tank see if tou can reach and wiggle the electrical connection on the top of the tank. these pumps have a pigtail issue. please rate

Posted on Dec 08, 2008

  • 12 Answers

SOURCE: 93 Chevy Blazer S-10 4.3L F.I.

if this is the vortec engine you may want to check to confirm that the injector pot is working. The injector pot is located under the air intake manifold (top half only) & PLEASE BE SURE TO DISCONECT BATTERY FIRST. if you unbolt the top half of the intake manifold you will find the main injector pot otherwise known as the SPIDER. This part does have a history of failing and can be very costly to replace if you purchase it new. most junk yards should be able to find one for you.

Posted on Feb 16, 2009

  • 116 Answers

SOURCE: 1999 chevy blazer wont start

THE FUEL PUMP IS BAD.

if your losing fuel pressure after the pump runs the drain back valve in the pump has failed.

and i doubt that you are seeing enough fuel pressure to run a vortec engine.

low fuel pressure equals a non running vortec

Posted on Apr 11, 2009

  • 10 Answers

SOURCE: engine wont start without priming with gas first, then runs well

i have the same problem on a 98 jimmy 4.3 4x4.
i replaced the fule pump and have good pressure.
new wiers & coil (good spark) no MIL & no codes.
will only start when primed. it will run & drive all day
with no problems.
but once it has been turned off (warm or cold) i will
have to prime it once again to start it.
i have another engine that was in it before it spun a bearing.
it ran fine so i know all parts are good.
i swaped the mass air flow and throttle body but i still have
to prime it everytime to start it. am i forgetting something?
should i swap out the intake with the injectors?
any help would be sweet. thanks.

Posted on Jan 05, 2010

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1 Answer

2002 Blazer will not start. It fires and sounds like it is going to start every time I turn the key, but will not start. Sometimes it sounds like it starts, but dies immediately. (within 1 or 2 second


if you know its getting fuel then lest talk about spark check the spark plug wires and the spark plugs if you got spark see if your getting air check the air filter if its to dirty it wont start beacuse clean air wont come through

Sep 09, 2012 | 2002 Chevrolet Blazer

1 Answer

2002 blazer crank but wont start


2 things that you have to check on no starts every time. Spark at spark plug and fuel. Turn key to run position and listen at gas tank for fuel pump to run you should hear a whining noise. This will only happen for 3 to 4 seconds then it will shut off until engine starts. You can turn key off then to run every 3 to 4 to listen for fuel pump. You may hear the relay click off in engine area even if pump does not run. Fuel pump failure is pretty common. If pump is running pull spark plug out or put a spare plug into spark plug wire and have someone crank engine set plug on engine and watch for spark. This will give you a starting point. Hope it helps.

Mar 30, 2010 | 2002 Chevrolet Blazer

1 Answer

My 2002 chevy blazer turns over but wont start I've changed the fuel filter so far but would like to find some answers before spending hundreds of dollarswithout knowing if I'm going in the right direction


Check for spark on any cylinder, by pulling the plug wire and installing a clean, spare plug in the wire--lay the plug body on the engine metal. Have someone turn the starter while watching the plug. Regular blue sparks show the ignition is ok along with the crankshaft and camshaft position sensors. If no sparks, suspect either of the position sensors. At this point, rent a scanner, read any code(s), and pursue to repair(s). If you have fuel problems, that should show on the scan. Swapping parts is not a realistic way to troubleshoot problems.

Oct 28, 2009 | 2002 Chevrolet Blazer

1 Answer

1999 chevy blazer wont start


THE FUEL PUMP IS BAD.

if your losing fuel pressure after the pump runs the drain back valve in the pump has failed.

and i doubt that you are seeing enough fuel pressure to run a vortec engine.

low fuel pressure equals a non running vortec

Apr 11, 2009 | 1999 Chevrolet Blazer

1 Answer

2002 blazer 4 wheel drive hard to start


If the pressure is slow to rise, you should consider changing the fuel filter if it has not been done in the past 30,000 miles.
Next, disconnect a spark plug and check for spark while engine is cranking. Use a spark tester or old spark plug grounded to the engine block.
Let me know.
Regards,

Mar 23, 2009 | 2002 Chevrolet Blazer

2 Answers

1996 chevy blazer


you may want to check fuel pressure possibly fuel pump try banging on the gas tank with a mallet while someone tries to start the car if it is a fuel pump you may be able to get it started but pump will still need to be replaced

Oct 16, 2008 | 1996 Chevrolet Blazer

1 Answer

91 chevy s-10 blazer


sounds to me like water may have possibly gotten into the engine spark plug areas and are preventing the engine from sparking.

Jul 28, 2008 | 1991 Chevrolet S-10 Blazer

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