Question about 1997 GMC Sonoma

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97 GMC Sonoma

My truck wont start unless i pour a little gas in the carb. first. if i crank it ove without priming it first it will not start . once i prime it ,it runs fine until i shut it off.

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

Posted on Jun 22, 2008

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My 1998 gmc snonma votec wont start it cranks and cranks and after about 20 mins it starts after that i can shout it off and it will fire back up fine then a day will go by and it dose the same thing


You have to check the fuel pump pressure to make sure it is supplying sufficient fuel pressure..Try turning the switch to on but do not start..now listen for the fuel pump to prime the system..it should run for 4-5 seconds the shut off..now try and start..if it is fully primed it should start...note although you are getting some gas dosent mean the pump is ok...sometimes it starts to go bad and then all at once it will let you down for good...have it checked out..good luck

Oct 22, 2014 | 1998 GMC Sonoma

2 Answers

On my 2001 gmc sonoma truck it will not start with pouring a little gas in the carb . And then runs good .it has a new fuel pump .


Ford had this issue with their aluminium jets in the carburettor. I had to replace the carb on mine as it is part of the moulding. What happens is the vapour ices up as it atomises due to the wear in the jet.

Jun 16, 2014 | Cars & Trucks

1 Answer

MY Sonoma WON'T START UNLESS I POUR GAS IN UNDER THE BREATER THEN IT WILL RUN AL DAY, THEN I MUST DO IT AGAIN.


I THINK IT THE PUMP AS GONE IF YOU LISON WHEN U START UP YOU WILL EAR A HUMING FOR 3 TO 10 SEC THAT IT PULLING THE GAS FREW IF NOT IT MY NEED A NEW 1

Oct 04, 2013 | 1996 GMC Sonoma

1 Answer

I was driving down the road and the truck just quit. it cranks very well, but no intentions of turning over. i checked the spark,good but even when i puur gas in the carb. nothing happens


this sounds like a bad fuelpump, try spraying starting fluid in throtle instead of pouring gas, when you pour gas it may not enter all cylinders it may just sit in intake galley. try the starting fluid.also have someone crank the engine while you beat on bottom of gas tank with a rubber hammer, this sometimes shakes fuelpump and make a contact to get pump going again.

Jul 21, 2010 | 1997 GMC Sonoma

1 Answer

2000 gmc sonoma starting problems


basic trouble shooting time... check that there is spark and move on to the fuel system if there is... possibly poured to much gas down and it's flooded.

P.S. if that is an old engine with lots of miles on it and you poured too much gas down the carb you may want to check your oil... raw gas may have leaked down into the oil pan as well

Robert

Sep 07, 2008 | 2000 GMC Sonoma Extended Cab

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