1985 s10 wont start cold push starts fine then starts all day after it sits all night it wont start have replaced numerious parts like fuel pump,fuel filter/plugs wires cap and rotar need to know which wire on coil is 12v. supply from egnition switch because it seems to start when i let key off crank mode

Chevrolet S-10 Questions - Fuel System Loses Pressure ...

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CarGurusJul 28, 2012 - Fuel System Loses Pressure - I have a 2003 Chevy S-10 Pick Up with the 4 ... car a few times, what essentially you are doing is priming the fuel pressure. ... A dirty fuel filter will not cause the lines to lose pressure after the engine is shut off. ... I have a 98 s10 2.2 liter and it was driving fine all day then when ...

Chevrolet S-10 Questions - My 2001 S10 has a hard starting ...

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CarGurusSep 16, 2012 - My 2001 S10 has a hard starting problem if the truck sits between 1 ... Vacuum leak, have you checked fuel pressure while it sits? ... Would the spider alsocause a misfire at low rpms? .... at an idle, or squeaking while driving and it gets faster as you go? ..... 1994 Chevrolet S-10 2 Dr STD Standard Cab LB.

Chevy S-10 Won't Start - Repalced Fuel Pump and Pressure ...

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Chevrolet S-10 pickup won't run and has no fire unless I jumper the fuel pump relay. ... Once the truck starts and is running you can remove the jumper to the fuel pump ... Iwould get the fuel pressure checked to start with, because that's where the ... 93 gmc 4.3l FI runs but dies out loss of power after 5 mins of running then ...

Stalling S10: I Have a 1994 Chevy S10 2.2l It Stalls After 35 ...

Wires on wrong ?

Fuel Pump Failing & not holding pressure
in the fuel rail when it sits?

check fuel line for minor leaks and check valve also check the filters sounds like air bound problems

had a 2000 blazer 4.3 wouldnt start in really cold enviroment..... ended up being the FUEL PUMP RELAY.... it still running good... bout every ther day or so... but it acted like your truck

well if you security light is on, then you have to put your key in the on position for exactly 10 mins and wait until the light blinks and then turns of and then you turn the key off and they you can start it. i have a 2002 alero and it works for my car.

You could have a bad cold start valve, go to an auto parts store and buy the cold start valve and replace it. you will see it on the intake manifold also pull off the air cleaner or hose and get a can of berry mans carb cleaner and clean the throttle plate inside and out then lube the throttle cables with Wd 40 then try it, if it starts your set, if not try pushing the throttle all the way to the floor and crank for 15 seconds then wait one minute then slightly press the gas pedal and try starting again this is how you clear flooded engine. If it starts you know that the throttle plate or cable froze shut and would not allow air into the engine causing it to flood. also check that the O-ring is not missing on the distributor cap which would allow condensation to form inside the cap shorting out the plugs and allowing it not to run. if it does it again pull the cap and look inside the cap if you see moisture then you need to replace the cap and rotor and O-ring.

Lets do the basics. A engine has to have compression, fuel and spark to start. Sounds like one may be missing.

you have water in the fuel line

A very common problem on the 99 S10 is a leaky fuel pressure regulator in the intake plenum.What happens is when the truck sits for a few hours or more the regulator leaks all of the fuel in the fuel injection system into the intake air plenum. This does 2 things, 1 it has no fuel pressure when starting and 2 it floods the air intake with raw fuel. Sometimes if you turn the key on wait 3 seconds then turn key off then turn key back on and just turn key to crank starter for a split second and wait 3 seconds.do this 3 times to repressurize fuel system then crank to start(you will hear fuel pump buzz each time you do this.also you may have leaky fuel injectors. Try to crank engine with the gas pedel to the floor. This will tell the computer to stop spraying fuel trhough the injectors and it will start. Joe ASE Master Tech

My 85 silverado was doing the same thing last week. After a few days of that B.S. I ended up replacing the fuel pump and filter and she's been running great since,

PS. The fuel filter is located at the carburator.