I have a 96 chevy c1500 5.7 distributor problem

I've uploaded a diagram that gives you the firing order for the 96 Chevy Cheyenne. The best way to find out which is number one in the firing order is to following the spark plug on the engine block back to the distributor cap. Number 1 is on the right side, closest to the front of the engine. Best of luck!

I have 1993 chevy 4.3 pickup that about every three years does the same thing it was the fuel pump relay located on passenger side of firewall under a plastic flap. I went to parts store told them my vehicle and got relay took 5 minutes runs fine again Semper Fi!

In the book a 96 model only fits 96-98 cars.
But the actual pump may be the same. You get an assembly including float and lines when you buy a new part.
You may be able to look at a new assembly for each year and tell if the actual pumps are the same style.

You need to pull the distributor back out, put motor to TDC
now you say its always a tooth off...the timing chain may be alittle worn..so when you are trying to put the distribor back in ...put a socket or something... to move the crankshaft.....move it back and forth untill the distributor falls in....AT the number one plug on cap....
Hope this helps you out ??

Recheck the distributor. #1 and #8 on the distributor should be parallel with the fire wall. If they are not remove the distributor and use a long flat screwdriver and insert it in the hole and the the oil pump. do this untill you get the distributor to sit on the engine and the plugs are in the right position. Once you get this done you can time the engine with a timing light. Also if you swapped heads, you may need to do a valve adjustment. Let me know
Randy

there should be numbers on the top of the distributor and chevy numbers there v8s like this number one is drivers front plug 2 is pass. front plug 3 is drivers side second plug back 4 is pass side second plug back 5 is drivers third back 6 is pass third back 7 is drivers fourth back 8 is pass. fourth back firing order is 18436572 thats the order the distributer hits the wires incase there are no numbers you can put the engine at top dead center just pull the number one plug and turn the engine by hand at the crank i thing its a 7/8ths bolt in the center always turn right (left takes out the bolt) put your finger on the plug hole when you fill air being pushed out then grab a long flat head screwdriver stick it in the hole and slowly turn the engine till the screwdriver is at its highest point then pull the dist. cap off and see were the rotor is pointing that is number one the next one is 8 then and so on i dont remember what way the dist. turns so you can see by turning the engine a little more the dist. will turn with it. hope this helps

if it does not start after you check your distributor cap that means you took the car out of timing, when you put the distributor cap back on you did not put it is the correct position, now you need a mechanic to get the timing of the engine

remove the number one spark plug, get some one to hold there finger over plug hole till it blows your finger off the plug hole, bumping the starter slowly till it blows off, stop there to see if number one piston is all the way up top dead center, drop in distrubutor with rotor pointing at number one on the cap , after its in ,seated, look to insure the rotor is pinting to number one on distributor cap, that should crank there till you can get a timing lihgght on it, hope this helps you ,thanks robert b.

when you bring the piston to TDC on the compression stroke
slide the distributor in and point the rotor towards the number one cylinder once you get it all back together but dont tighten the distributor down tight because you still have to adjust timing

i believe that your distributor points are getting wet form hummidity and you timming may also be off or you may have the wrong plugs but im sure its not starting when damp because of somthing under the distributor cap