STARTING PROBLEMS WITH CHEVY S10 2003

Chevrolet GMC Rough Running Lean Misfire

sounds like a dirty throttle body or injector
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Thorough Throttle Body Cleaning ex Chevy Impala

Pull the air cleaner off and crank the engine. If puffs of air come come out of the throttle body when cranking the engine then the timing is not set correctly. Otherwise, after cranking pull a spark plug and see if it is wet with fuel and if so this indicates an ignition problem (coil, distributor/cap/rotor or faulty ECU).

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Check the ignition timing as it appears that the firing order is wrong. Make sure that the cam shaft is turning as it could be the belt broken

In the morning if you turn the key w/o starting it and let it sit a while before starting, does it have trouble starting / smell flooded? If so, likely a bad / leaky injector.

Otherwise, I'd check the O2 sensor(s), likely have a bad one.

hope this helps.

Try cranking with throttle fully open to clear possible flooded engine.

If you're certain you have spark then try the starting fluid again strait into the throttle body with someone immediately starting it. Your compression may be another issue to look at but this is uncommon to stop you while running down the road. You might want to check the compression though. Take off a valve cover to confirm that the valves are still moving to help rule out a broken timing chain.

Sounds like the fuel pump is bad

ICM idle control module, loc throttle body, it may be dirty, remove clean or replace, its easy..

I lost you in chat and I can tell you that you need to clean the throttle body and set the choke on the throttle body, if it is carburated then you need to replace the float as it is allowing to much fuel into the system and flooding the engine the reason you are told to put your foot down all the wa is that is for clearing flooded engines. please contact me so I can help my e-mail is [email protected] and our programs did not wantto talk to each other. Avid101