The engine just cranks an wont start, there is fuel in the cylinder and its getting spark but its orange an little, the air filter is clean, I parked it one night and the next day it wouldn't start just crank. herd about a sensor but what one. we got in a wreck a while back, is there a auto cut off of some sort. what els could it be
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Try changing the ignition coil. Had same thing the other day. But a spark outside the cylinder does not need the pizzaz as when it is in the cylinder. When the air is compressed in cylinder and the molecules are packed much tighter together it takes a really hot spark to jump the gap. A weak spark will jump the gap when you test for spark outside the engine but not be able to do the job in the cylinder.
I think I have the solution for ya. In a lot of GM's the security fails. and when it does it will not allow car to start. I know a module that can bypass it and for a very reasonable price and u can install yourself! check it out and see if this is it
The first thing I would check is you are getting both spark and fuel at the cylinders. Remove one spark plug at a time and connect to it's plug wire while holding the end of the plug against a solid ground. Have someone crank the engine. If you see a good spark in the spark plug gap I would then make sure you have fuel at the cylinders. Cranking the engine for a bit. Then pull each spark plug out and check that fuel is on the end of the plug. If you have both fuel and spark at the cylinders I would look more at such things as timing belts, sensors, etc.
First of all. you have to line up the rotor to the number one distributor tower with the engine at O" TDC, so your timing probably was initially correct. Sounds like you are getting TOO MUCH FUEL. Could be fuel pressure regulator located on fuel rail. Also your plugs are probably fouled too from all the excess fuel.
what year? if it a 350. take 12 volts directly to the distributor. if its cranking then dump some fuel down the carb. that should make it run for a little. if you are getting spark you are not getting fuel if it won't start
only 3 things will cause this engine not to start (crank and not start) fuel, ignition, timing. You haven't mentioned the engine cranks over or not, so I have to assume it cranks over. Possible timing chain or the crank sensor on the timing chain. Have you checked this? you need to remove number 1 spark plug & when the piston is in the full top position on compression, remove the dist cap & see what spark plug wire the rotor is pointing to inside the dist cap. (I'm sure if you google checking for top dead center you'll find the proper procedure)
It cranks really good sputters a little and makes some loud pops but it will not turn over? FYI:Cranking and turning over are the same thing. When was the last time it ran. The gas could be bad. Did you get new plug wires as well. Try testing the distributor, remove a spark plug, plug it back into the wire, and touch the threads to ground and crank the engine. It should spark. Keep your fingers away, that's high voltage. Remove all spark plugs, spray some starting fluid in each cylinder, then crank the engine with the plugs out. This will clean any debris from the cylinders. Engines need backpressure to run properly, a major exhaust leak hence the popping, could cause it to not run. If you can get it started try to keep it going, full throttle, keep in the starting fluid, it could just need to get warm. I used to have one of them and they don't like it when they're cold.
If the battery terminals are clean (and they probably are, as you just replaced the battery), and the starter sounds like it's cranking, then there are usually two other things to check for. Gas and spark. You need both to make the engine run. It's a little involved, though for most do-it-your-selfers, it's a-run- of-the-mill process. You have to see that fuel is getting to the cylinders by disconnecting a gas line and very briefly, repeat, very briefly, crank the engine. If any gas spurts out, you're getting gas to the cylinder. If not, there's a problem with the fuel system. Be sure there is no spark or open flame anywhere nearby. Take the car in to a shop.
The other most likely possibility is that your cylinders are getting no spark. You have to disconnect a spark plug wire and see if you are getting a spark. This is a little more involved. Get a fix-it manual for the in-depth procedure. When checking for a spark, make sure there is no open fuel lines around!