I have a 1998 s10 with a 2.2 engine, It misses really bad, has bad fuel smoke out of exhaust, after keeping it running ( which is hard to do), it has an excessive amount of gas in the oil. Please help. Thanks
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Re: dumps raw gas into engine
Just a few things to check. Take off the fuel filter and make sure there is no water in it. If you have put in different spark plugs than AC Delco, then change them to AC Delco. If you haven't looked at the plugs or the fuel filter, then it is way past time to replace the filter and new AC Delco spark plugs only. These places that insist that you use Bosch plugs or split fire plugs don't know ****. The Delco plugs are made especially for your engine and will out last those cheap non-working Bosch plugs.
If the fuel filter and plugs don't fix it, make sure your air filter intake isn't stopped up with a bird's nest. Happens a lot. If it still misses after new plugs, you may have a fuel injector sticking.
The bad smoke is the gas-thinned oil passing the rings and unburnt fuel smoke. The missing really bad is most likely fuel soaked spark plugs. Make sure you change the oil while changing the plugs or you will have a redo. Let us know if any of this helps. Dale
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Just a hunch, but you may want to get a mechanic to see if any valves are leaking, if any gaskets need replacing, if any of the plugs are bad and need replacing (this will cause an engine to miss sometimes), if you've blown a head gasket, or even if the head is cracked. Lots of times, vehicles with cracked engine heads will miss or run erratically. Also, they will leak oil which can be burning off of other components of the engine such as the manifold. Hopefully not, though! As far as the the fuse goes, there might be something grounded that's causing the fuse to blow constantly, or there could be a short in the wiring somewhere. Maybe you can get someone you know to check that out. Hope this helps!
Sounds like a head gasket I am afraid... with coolant burning off. Are you running low on coolant, check the header tank in the middle front of the engine bay. If this is getting low you need to have a garage check your compression.
if it smells like raw, unburned fuel, you may have an injector stuck open. i assume it clears up and drive good after a short warm up. there will be evidence of which cylinder has the bad injector by pulling out the spark plugs. the affected cylinder will be washed clean and smell like unburned fuel. the plug may also be "wet black" and of course smell like raw fuel.
HOW MANY MILES ALOT IT REALLY SOUNDS LIKE YOUR O2 SENSOR OK LOCATED ON THE EXAUST PIPE CLOSE TO ENGINE UNDER THE HOOD THEY CONTROL YOUR FUEL MIXTUER FOR HOT AND COLD LIKE A CHOKE . IF ITS BAD THE ITS FLOODING IT OUT WHEN HOT AND YOU GET ROTTEN GAS MILAGE BECAUSE YOUR FUEL PRESSURES ARE FINE REGULATORS EITHER WORK OR THEY DON'T AND IT THEY DON'T YOUR TRUCK WON'T RUN O2 SENSORS GOING BAD DON'T ALWAYS GIVE A CODE OR A DASH LIGHT BECAUSE OF THE BAD GAS MILAGE AND BLACK SMOKE WHEN IT IS WARM ITS PRETTY OBVIOUS WHAT IT IS OK GOOD LUCK POHLCAT
black smoke is raw gas burning. a rich condition could be the cause---a bad oxygen sensor, a bad map sensor, a bad fuel pressure regulator, a plugged up air filter, or bad injector. if it was a oil problem then you can smell it. when after running til hot. shut off engine and rub finger around inside of tailpipe to tell! have a good one!!
More specifically you will have trouble starting the car. When the ECTS is bad the PCM reads it that the engine is at -40F. This means that it will dump tons of fuel into the engine in order to warm it up. You may also experience rough idling due to the rich fuel mixture and black smoke from the exhaust (which is an indication of running rich, burnt fuel).