Question about 1991 Chevrolet C1500
After sitting for 2 years, the gas has moisture/water and it's pretty much not gas anymore. It's like your car needs 87 octane and you are running on 80 octane, just enough to fire off but not strong enough to to keep a good idle/firing. I would drain all the gas out and use a higher octane gas for a half of tank just to clean the lines and injectors. Fill the tank up 1/2 with high octane and use a bottle of injector cleaner. This should clear up the sluggish problem. Also it's a good idea to change the oil and run an engine cleaner through. Drain a quart of oil, and pour in the engine cleaner. Let engine run for about 5 min for oil to heat up and circulate. Drain oil and change oil filter, put in new oil.
Posted on Jul 06, 2010
Hi my name is Tom and I can help you.
I am going to venture a guess that you had very little or at less than 1/2 a tank of gas. I will venture another guess and that is that if you take the fuel filter off it will have small particles of rust plugging part of the filter.
You may even have water in the tank, especially if the car was parked in temperate climates where the cold of winter gives way to the heat of summer.
My suggestion is to replace the fuel filter. Remove all the gas. If you have no way of doing that, then I suggest filling the tank all the way to the top and adding 2 cans of engine deicer ( methanol) to the tank. You should let the car sit for a hour and then start it up. God willing and a strong wind you should have a "new" running car.
I trust this info was of help. If I can be of further help, let me know.
Posted on Jul 06, 2010
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Posted on Jan 02, 2017
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