Question about 1983 Chevrolet K1500

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I have a 75 350 chevy engine that is backfiring through the exhaust, I just started the car after sitting for 1 1/2 yrs. Mo internal engine noise, idles fine for about a minute and then just dies. Try to give it fuel and it backfires through the exhaust with a series of small bangs and then flames and a bellow of smoke. Please help. Regards, Brad

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Posted on Jan 02, 2017

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SOURCE: backfiring

No. If you knocked pieces of the chain or sprockets off, you'd not run at all. Check your timing and your idle mix. Also, check to see if your crankcase vent valve is moving freely. Replace if in doubt. Sounds like you may be running rich. Check carb for proper idle mix after you set float levels. Is the carb new, rebuilt or some old hunk? Are the gaskets new or reused? Is the spacer plate the right one for the car and installed correctly?

Also...was the timing chain new and the cam properly indexed? You may have to take the front of the engine apart to find out.

Posted on Jun 12, 2008

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SOURCE: backfiring

it has plug wires crossed the firing orders is 18436572 make sure distributor is pointing toward # 1 plug wire make sure #1 cylinder is up on compression take plug out put finger over plug hole let some one crank it over until compression comes up then line your rotor button is pointing toward #1 wire on cap. then start ur #1 plug wire where the rotor button is pointing and go clock wise 18436572 and that should take care of it

Posted on Jun 12, 2008

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SOURCE: 03 chevy impala ls starts and then dies immediately

Check the fuel pressure regulator. Its next to the throttle boby and has a vacumm hose connected.

Posted on Nov 28, 2008

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SOURCE: 1989 Chevy K2500 - idles fine but stalls out when put into drive.

Sounds like the injectors may be bad or just really dirty. You say that the truck is only used as a plow truck, so I would assume that it sits alot. If you dont add any fuel stabilizer to the tank, the fuel will start to degrade and the will gum up your injectors. One thing you can do is to pull the air cleaner assembly off and look at the injectors while the truck is running. Look at the bottom of the injectors while it is running. The injectors shouldbe spraying fuel with a fan spray of fine mist. If you see any drips of fuel in the this fine mist, that injector is at least dirty or on its way out. I would recommend that you change your fuel filter and then get some fresh fuel and the purchase some Seafoam fuel injector cleaner from your local parts store. Dont mess around with anything else. GET SEAFOAM. If it is in a plastic bottle it is not strong enough to do anything. Seafoam is in a metal can. Dump the seafoam in and run the truck as much as you can. This will help clean out the injectors.

Posted on Jan 22, 2009

  • 1 Answer

SOURCE: 89 chevy beretta gt- surges at idle, backfires and hesitates

Hi! I had the same problem with my 88 2.8 Ltr. Had dirty fuel Injectors. Put in fuel Inj. cleaner in gas tank, after a couple of days, runs like a dream,no more problems. Give it a try. Take care,Leo B.

Posted on Feb 04, 2009

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