Question about 2000 Chevrolet Blazer

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2000 blazer bucky under load? replaced fuel filter and did a pressure test, I get 55 to 65 psi. the specs say 60 to 66 so i think the pump is fine. I brought it to autozone and a 339 CKP code came up and a 300 misfire code. is this the CKP sensor or can the problem be somewhere eles. Fuel reg.?

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I would replace the crankshaft position sensor, the codes would indicate a problem there.

Posted on Apr 21, 2009

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2000 blazer,idles and revs up fine in park,put it in drive it has no power


Check your fuel pressure it should be 60-66 psi with key on and engine off.If its below 52 psi replace the fuel pump and filter.Sounds like it maybe a weak fuel pump.

Dec 28, 2011 | 2000 Chevrolet Blazer

1 Answer

2000 blazer wont start, after 2 days it will start and run for 5 minutes but then it quits and wont start for 2 days


Check your fuel pressure it should be 60-66 psi with key on engine off.If its not within these specs replace the pump.

Dec 09, 2011 | 2000 Chevrolet Blazer

1 Answer

My 2000 chevrolet blazer will not start unless i use starting fluid


Hello, this indicates a weak fuel pump. fuel pressure real critcial on this vehicle. you will need to check the fuel pressure with a mechanical gage at the test port on the fuel line, near the throttle body. here is the fuel pressure spec.

When the ignition is ON and the fuel pump is running, the fuel pressure indicated by the fuel pressure gauge should read 414-455 kPa (60-66 psi

Aug 17, 2011 | 2000 Chevrolet Blazer

2 Answers

I have a 1995 Chevrolet Blazer and we just changed the fuel pressure regulators and that was not the problem. it runs fine for about 2 or 3 minutes and then it starts to sputter and then it dies. when we...


SOUND LIKE FUEL PUMP.REPLACE FUEL FILTER,CHECK FUEL PRESSURE SHOULD BE 9 -13 PSI. FOR TBI FUEL INJECTION AND 55 - 61 PSI FOR MFI MULTIPORT FUEL INJECTION SYSTEM.

Jul 26, 2011 | 1995 Chevrolet Blazer

1 Answer

My 95 blazer has a hard time stating i can hear the fuel pump.when it gets started it runs fine. do you think its my fuel pump or something else?


REPLACE FUEL FILTER,CHECK FUEL PRESSURE, SHOULD BE SHOULD BE 9 - 13 PSI TBI FUEL INJECTION AND 55 - 61 PSI MFI FUEL INJECTION.WHEN YOU TURN ON IGNITION WITH ENGINE OFF.LET FUEL PRESSURE BUILD UP AT FUEL PRESSURE GAUGE TO CORRECT PRESSURE THEN TURN OFF IGNITION SWITCH. IF FUEL PRESSURE DROPS VERY FAST OR LEAK DOWN IN 10 MINUTES.YOUR FUEL PUMP CHECK VALVE FAULTY IS BAD.FUEL PUMP NEED REPLACING.BE SURE FUEL INJECTORS ARE CLEAN THEY WILL LEAK DOWN FLOOD ENGINE FOUL OUT SPARK PLUGS.

Jul 23, 2011 | 1995 Chevrolet Blazer

1 Answer

'94 S 10 Blazer V6 Vortec EFI. Fuel pressure good, new fuel injectors installed, fuel pump works ok. Only starts with starter fluid sprayed into air intake. Any Suggestions?


your statement is fuel pump work ok, have you tested for proper fuel pressure. just because the fuel pump works it could have less pressure needed to start the engine. maybe the fuel filter is plugged. start out by replacing the fuel filter, if this doesn't fix it, you need to pressure test the pump. even 10 psi reduction in pressure will allow the engine not to start.

Nov 03, 2009 | 1994 Chevrolet S-10 Blazer

2 Answers

Fuel pump pressure specs


The fuel pump specs are 14 psi. and 20 gallons an hour.

Sep 08, 2009 | 1991 Chevrolet S-10 Blazer

1 Answer

Completed tune up, drove for 2 blocks, engine shut down


Just having fuel is not enough on this engine, here are the spec's. Even 1 psi out of spec can cause a no start.

Fuel Pressure
Pressure 1 (PSI) Pressure 2 (PSI) Pressure 3 (PSI) Range Note Range Note Range Note 60.0 - 66.0 Y131 50.0 - 63.0 Y132 66.0 Y133 Y131: System pressure with ignition on (PSI).
Y132: System pressure while idling (PSI).
Y133: Fuel pump pressure (PSI) with return line briefly restricted.



Feb 24, 2009 | 2000 Chevrolet Blazer

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