20 Most Recent 1986 Chevrolet C1500 Questions & Answers

there has to be a wire from the coil to the distributor to the points inside the distributor if it has points , check that they are not shorted out and that the moving point is insulated from the distributor plate check for a condenser attached to the moving point and fixed to the distributor body if it has an electronic system , it could be a problem igniter unit in the distributor

Could be a lot of things I would start here. If the engine is shaking at idle or not it maybe the spark plug wires. easy way to check start the truck take a spray bottle and spray a mist on the wires to see if the truck runs worst make sure you stand back while doing this so you don't get shocked.

need check ignition module see good power or ground to it and possibly replace if bad

Cam gear and crank gear have dots on them ,,,, put the gear dot to dot,, one pointing at the other,,,then remove number 1 plug ,,driverside front plug,,,,hold your finger over plug hole tight till the air blows out hole ,,, your close now to the conpression stroke,of number one plug, use a socket on crank shaft center bolt to move the crank,,,have some one turn it with hand to get the piston to up to the top of the hole,, right to the top,,, now get the distributor and get the rotor button pointed strait at the number 1 spark plug hole,,,your oil pump rod slit will need to align to ,,, look in distributor hole and use long screw driver or tire tool to turn the oil pump rod, needs to point at ,,line up with,,,,number one to,,, or real close,,,,,, make sure the disbributor goes all the way down and sits flush on block,,,,make sure vac advance is in 8 oclock position or close,,,,if you get it to go down but its not pointing just right move the plug wires to make number one plug where the rotor button is pointing on cap,,,,should be ggod to go,,,,

Is that a statement or a question? How can the crankshaft itself determine if it is placed in a 2 or 4 bolt main block?

the pinion gear is not in correct mesh with the crown wheel. It is not just a case of throwing parts in and putting it together but the correct mesh and preload of the crown wheel and pinion and the bearings has to be obtained . There are plenty of chevy workshop manuals that tell you how to get it right as the diff set up is constant across the range.

could be starving for fuel or air, trans could be problem also.could also be any number of small electronic parts causing it. start by replacing air and fuel filters. if no change then have it diagnosed by the computer....

try a spring inside the hose that is collapsing...assuming of course they are all routed properly and thermostat is installed correctly

hose?seal?

The HEI has nothing to do with the alternatorThe HEI needs battery voltage,not the resistor,that was there for the point ignition distributorUnless you moved wires around to feed the HEI,you just diagnose the alternator as usualNew doesn't mean it worksHave to know how to test it

Not sure I follow you. Are you going to rewire the key switch power source back to the starter post ?And the truck is actually a 1968 instead of a 1986 ?