Hard to start

After about 10 hours of sitting cold, I checked the pressure and it's reading 0 PSI.

I have some more information that might be of some more assistance.

I noticed that the engine will have a severe misfire (strong enough to flash the MIL and set the P0300 code), but only in 2nd gear. If I'm going 35 miles an hour in 2nd gear (about 2500RPM) and I try to coast or maintain a certain RPM above 2000 and lightly have the accelerator pressed, the misfires happen. When I accelerate in 2nd, nothing. This problem doesn't happen in Over Drive. When I stop in 2nd, nothing.

The engine was also at operating temperature, but it will also do it when it's cold.

The first time I tried to recreate the conditions and set the P0300 code, it also set P0147 and P1351 along with it. The second which I let it misfire only for a short period of time, set only the P0300.

No, I have AllData.

I have a question though. The engine that came in my truck was an X-Vin 4.3L V6. When that engine threw a rod, it was replaced with a long-block W-Vin 4.3L V6 engine. The PCM is original from the X-Vin. Are the PCMs the same from VIN to VIN?

Nick

The original was an X-Vin engine.

I did notice today that the misfire also occurs much more frequently when the truck is cold. Even in park, the engine would misfire repeatedly when revved and even when under full throttle. This disappears when the truck warms up.

Nick

Starter will not engage at all times and when key is turned solenoid clicks. If you hold in the clutch still clicks. If you pump the clucth and continue to turn the ignition switch eventually it will fire over. I dont believe the starter is bad because it does start. Could the clutch switch be the problem?

Actually after pulling the starter I found the issue, Turned out to be the main posative wire from battery to starter was bad. Reolaced the wire and starts fine now. Thanks for your assistance.

Engine problem
1996 Chevy S-10 6 cyl Two Wheel Drive Automatic 140K miles

I have a 1996 Chevy S-10 with 140,000 miles on it. It has a 4.3 V-6 Vortex. I'm having a hard time starting it cold or hot, but it runs perfect once it starts. I've done a major tune up, including spark plug wires, distributor cap, rotor, fuel filter, air filter, fuel regulator valve, throttle body, oxygen sensor 1 & 2 and a new fuel pump and it's still starting hard. Any suggestions as to what I can try next?
Thanks a lot,
Lou

I have a 1996 S10 pick--up 2.2 engine. When it's cold I have to crank it about 10 seconds to get it to fire. Sometimes longer. I have already replaced the fuel pump and filter. When it's warm, it is better but not like it should be.

When I changed the fuel pump, the tank was rusted quite a bit where the fuel pump flange seals and it leaks when it is overfilled. Could this be the problem?The truck started fine for quite a while after changing the pump. Just this summer, it has started starting hard. It was a gradual problem. It wasn't an over-night problem.

Engine Mechanical problem
1996 Chevy S-10 4 cyl 100000 miles

Hard to start, but when started, runs OK. Have to use starting fluid

The car almost always needs two tries to start. Once started, acceleration is sluggish for about a minute. Once it's warm it, runs fine. I had it tuned up about a year ago and just had the fuel injectors replaced. Fuel pump?

I have a 1996 S-10 w/127,000 miles. Vortec V-6. It has been a great vehicle, but in the last few weeks it has been starting hard when the engine is hot.
When the engine is cold it starts with just a half crank of the starter. However once it gets warm or hot, it cranks for 5 or 6 seconds and then starts like it was flooded. There are no codes. Is this a problem with the TBFI or with a sensor. I need this vehicle for everyday use and am afraid that it will shut off on me if I don't get it fixed. Thanks for any help you can provide. :P