1987 Chevrolet R-10 hesitation
August 28th, 2018, 3:02 PM
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1987 Chevrolet R-10 hesitation
Me and my grandpa recently bought a 1987 chevy R-10 for my first vehicle, when we got it, it had a huge hesitation when you accelerated and if you gave it to much gas it would kill. We change the distributor cap, rotor, plugs, plug wires, and rebuilt the tbi. The hesitation was a little less, so my grandfather took a coil off of another one of our old trucks which is a 1992 chevy 1500. The hesitation went away a little more but is still there. Me and my grandpa could really use some information to get this hesitation out of this thing. Thank you.
August 28th, 2018, 3:19 PM
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Me and my grandpa recently bought a 1987 chevy R-10 for my first vehicle, when we got it, it had a huge hesitation when you accelerated and if you gave it to much gas it would kill. We change the distributor cap, rotor, plugs, plug wires, and rebuilt the tbi. The hesitation was a little less, so my grandfather took a coil off of another one of our old trucks which is a 1992 chevy 1500. The hesitation went away a little more but is still there. Me and my grandpa could really use some information to get this hesitation out of this thing. Thank you.
August 28th, 2018, 3:57 PM
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We will check fuel pressure and no we did not change the injectors just cleaned them up. But when you have it in park it revs fine and there is no hesitation but when you put it in gear and actually drive it around it hesitates, Could it still be with fuel pressure then?
August 28th, 2018, 4:52 PM
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We will check fuel pressure and no we did not change the injectors just cleaned them up. But when you have it in park it revs fine and there is no hesitation but when you put it in gear and actually drive it around it hesitates, Could it still be with fuel pressure then?
I would certainly change the fuel injectors on an old TBI pickup like yours. You can buy rebuilt ones for as little as $30 dollars per injector (and you only need two) with a core charge, or its about $95 dollars per unit for new ones, with no core charge.
You can try soaking them in naphtha type solvent, but its not likely to work as they are old and the o-rings and other parts are likely hardened.
Last edited by oilcanhenry; August 28th, 2018 at 4:55 PM.
August 29th, 2018, 3:53 PM
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It could be the fuel pressure regulator, or the fuel pump isn't putting out enough pressure. In my experience, most electrical auto fuel pumps simply fail real quick, but not always. You didnt mention changing the fuel filter, so that might help.
I would certainly change the fuel injectors on an old TBI pickup like yours. You can buy rebuilt ones for as little as $30 dollars per injector (and you only need two) with a core charge, or its about $95 dollars per unit for new ones, with no core charge.
You can try soaking them in naphtha type solvent, but its not likely to work as they are old and the o-rings and other parts are likely hardened.
I would certainly change the fuel injectors on an old TBI pickup like yours. You can buy rebuilt ones for as little as $30 dollars per injector (and you only need two) with a core charge, or its about $95 dollars per unit for new ones, with no core charge.
You can try soaking them in naphtha type solvent, but its not likely to work as they are old and the o-rings and other parts are likely hardened.
August 29th, 2018, 7:43 PM
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