1987 Pontiac 6000 4 cylinder - I have spark (new plugs and wires) I am getting fuel, car will turn over but won't start. Brand new battery, the starter will crank over several times and then the starter acts like it is having a hard time cranking over. We installed a new injector, new fuel filter and replaced the ignition switch on the steering column. HELP!

Sounds like an ignition timing issue. consult a manual to find out what the correct timing is and then check your timing to make sure it is correct.

Battery connections must be dirty or loose...does it jump start? I'll bet the lights and radio still work...if connections are clean and tight, you will need to check the alternator...Hope this helps.

Timing could be 180 degrees out try switching plug leads on distributor i.e. 1&3 2&4

so I take it that the 600 is turning over with the new battery. Did you check the fuel lever? You might have turned it to off when you dropped in the new battery. Otherwise start trouble shooting, Is it getting spark? Take one of the spark plugs out and put the lead wire back on it then touch the bottom the spark plug to metal and turn it over...you should see some spark.Do this to all spark plugs. Then on to fuel, take the fuel feed line off, turn it over and see if fuel sperts out of the line. If all thats good, I would remove the carb. and clean it. Hope this kinda helps :)

Should be a designated fuse for the power to the fuel pump I'm not familuar with this model but some vehicals with electric fuel pumps have a reset swich on the pump or under the hood on the fire wall.

Start with what is missing to start the engine
Do you have fuel pressure?
Do you have spark?
Is the valve timing ok?

You should check the electrical system i.e do you have spark at the spark plug ends? If no then work on this. If yes then remove the spark plugs, put half a teaspoon of fuel into each cylinder and put the plugs back. Try starting the engine. If it does then fuel isn't getting to cylinders. If it doesn't then you need a valve or complete overhaul job,

Check for spark. If no sparks, suspect crankshaft sensor. If sparks are good, check for vacuum leaks.
Do It Yourself Diagnosis and Repair

Hi, are you sure your fuel pump is running? I'm assuming you have the 4-cylinder 2.5 liter engine. The ECU and the injector are powered by the same wire as the ignition system. See diagram below.

ive had this problem before and it was a small wire on the ignition key cylinder that had broken but we fixed it by buying a new cylinder and wire