Question about 1994 Oldsmobile Bravada

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Car wont start without priming - 1994 Oldsmobile Bravada

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Now by priming, do you mean cycling the key on and off? If so then I would say that it is the fuel pump b/c the cycling of the key makes the pump run enough to build up pressure. Usually the pump only runs 2 sec and then shuts off, so the pump will build up pressure by running more than normal. Hopefully this answers your question, if not, then you may respond again. Good Luck!

Posted on Dec 16, 2009

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1 Answer

2006 monte carlo wont start without priming


sounds like your fuel pump weak, need to check fuel pressure when engine won;t start and check with engine running

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WE OWN 92 CAMARO RS 25TH EDITION IT WONT START ITS GOT FIRE POWER AND SPARK SO NOW WHAT ITS DRIVE ME CRAZY WHAT TO DO. WE CHECK THE SPARK PLUG AND BATTERY AND ITS GOT GAS BUT IT WONT START WHAT DO U THINK...


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Wont start unless manually primed


Turn the ignition key to the ON position without starting the engine

You should hear the fuel pump priming for about a few seconds then shutting itself off.
If not hear replace the engine oil pressure switch
The 3rd wire to that switch is the pumps prime switch lead.
When the engines oil pressure is reached the computer will shut that circuit off and turn on the fuel pump relay
If you hear the pump prime the relay maybe at fault instead

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Engine wont crank without prime has good fuel pressure and a new injector spider


This vehicle needs 65 to 70 psi fuel pressure.to start cold, it will run with 55 after priming

Oct 15, 2010 | 1996 Chevrolet Blazer

1 Answer

I have a 1989 iroc camero that will not start.it has a throttle body carb and is a 305.the fuel pump works fine.the car will start if you prime it,but otherwise it wont fire at all.it has power on one wire...


Although you Say the Fuel Pump is Fine, What you Discribe is A NO FUEL Problem If it Starts When Priming and Does Not Without Prime this IS a Fuel Pump Problem NOTE: If you HEAR the Fuel Pump this only Indicates that the MOTOR that Drives the Fuel Pump Works , A Fuel Puessure Test Will Determine if your Fuel Pump In FACT DOES Work.

Apr 18, 2010 | 1989 Chevrolet Camaro

1 Answer

After we changed the fuel filter the truck started for a sec then died and now it wont start..what did we do wrong or how can i fix this problem?


I'm assuming that the vehicle started and ran fine before replacing the filter

a couple of things could have happened here...

1.) when replacing the filter you typically have to prime the system by turning the key on and off about 5 times before trying to start. since you just tried to start it without priming you may have created a vapor lock situation. try cracking the line again to vent the system then prime the system and try to start again

2.) you may have either installed the filter backwards or you just got a bad filter

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check the float on the carb is stuck shut not letting fuel in

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I have96 blazer will start and run if i prime carb with gas but


did you also replace the fuel filter with the pump?

May 28, 2009 | 1996 Chevrolet Blazer

4 Answers

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.

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1 Answer

97 GMC Sonoma


checked fuses , #9 fuse for fuel pump was loose.

Jun 21, 2008 | 1997 GMC Sonoma

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