I have a 1990 chev tracker I pulled positive batt conection while

Here's a link to your firing order. Specifications Firing Order AutoZone com

Check all of the battery terminals and cables and check the wires on the starter/selonoid, start from the battery and follow the cable out and check all conections , clean and tighten them and if it still does it the starter/selonoid is bad and needs replacement...

pls do rate the solution

thanks.
regards.
fixya expert team

Hello, just had this problem myself. Check your EGR valve by pulling the vacume line off and pushing up under the valve put your finger over the vacume line hole and release the valve, if it returns to normal position then its bad if not its good. If its bad it needs replaced. Mine did the exact same thing and thats what it was. Hope this helps

If it will turn over but not start it is a problem of either not having spark or not getting enough fuel. To check the fuel problem. Have someone turn the key to the on position without starting the car and then lay next to the gas tank and see if you can hear a motor going on the inside of the gas tank if so than the fuel pump is okay also make sure that the spark plugs are still in good condition and have the correct gapping. Make sure to also check the distributor cap and rotor. These will usually wear out and will cause none of the spark plugs to have any spark. if all else has failed. check the fuel filter as this might be plugged.

check for vacuum leaks. this can be done by waving a gas torch (propane) near the intake piping between the throttle body and the intake manifold with the engine running.

pull the plugs after trying to start it. if they are wet with gas there is no spark. if they are not wet but hot than it's fireing. factory ecu? motor?

Is the fuel pump running? When you turn the key to the run position (the dash lights come on), you should hear a humming sound coming from the gas tank for a few seconds. Thats the fuel pump running to pressurize the system before starting. It's kind of hard to hear, so get a friend to sit in the car while you lay on the ground near the gas tank. Have them turn on the key and listen. No hum means the fuel pump isnt working.

your timing may be off because of the valve timing. have you seen this done before or you just trying your luck. i really dont know but are all of your sensors the same? is the firing order the same?

the distributor pickup coil is failing replace the distributor

Hi again,

Any developments so far?

Cheers.