Fuel injectors mechanic said fuel injector leaking gas mechanic got problems cant get him back ti fix has already taken apart things to fix was to replace bands or seals on fuel injectors need service manual so i can get someone else to help me.

If it is liquid gas, you likely have a hard fuel system fault pouring liquid gas into the engine unrestricted. This frequently is caused on older vehicles by things like fuel pressure regulator failures, injector or computer injector driver failures, or sometimes computer faults related to fuel control improperly stuck in lean mode so the computer thinks there isnt enough gas in the engine, and adds fuel till the sensors see the ratio is correct. But if the sensors that would tell it when it reaches correct amount are stuck or broken, it will add fuel sometimes nearly forever till it starts liquifying the exhaust (Seen a Toyota with a bad O2 sensor hit 13.3% CO from a bad pair of O2 sensors. For comparison, normal CO is 0.5% or less. it had 25x normal fuel enrichment amount!)

Basically its ridiculously dangerous. Dont drive the car like that, tow it to service or fix it. It can catch fire, choke passengers on HC fumes, it can hydralock the engine and cause it to blow or severely damage internal parts, it can destroy o2 sensors and catalytic converters and mufflers. If the fumes collect and ignite from sparks or heat, it can detonate like a grenade! Usually not enough to injure passengers, but you dont wanna find out, and even if it stays underneath in the exhaust it can blow the catalytic converter or muffler to kingdom come...and both are expensive to fix especially when it can be prevented, Seek service immediately. They need to check for mechanical fuel issues (leaking injector, stuck injector, leaking fuel pressure regulator) or excessive fuel trims (System is at +25 long and short term trims despite the fact its actually got too much gas already...computer thinks it needs more. The computer is likely very wrong!

Hope it helps.

Hi there:

DTC P0302 - Misfire Detection Monitor - Cylinder 2 Misfire

A misfire is nothing more than a lack of combustion, which can be caused by poor fuel quality or metering, low compression, lack of spark or unmetered air entering the engine. There are other possible, less obvious causes as well, such as uncommanded Exhaust Gas Recirculatin (EGR), flow.

Other possible causes:
* Fuel injectors, related wiring, sensors and computer issues
* Running out of gas, or poor fuel quality
* Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
* Incorrect Fuel Pressure
* EGR system concerns: leaking EGR valve or restricted ports
* Base engine concerns: low compression, valve train problems and timing issues
* Ignition system concerns including, but not limited to:
- Faulty spark plugs
- Faulty coil or related wiring
- Ignition module or related wiring issues
- Ignition related sensor faults or wiring issues

Hope this helps.

could be plug or plugwires...have a tuneup maybe ??

cant tell if you've been driving it or are still trying to get it going but...Vehicle wont run on varnish. Drain fuel system if it is nearly full. Use the electric fuel pump to do it. (disconnect fuel line near engine extend line into a bucket then trick fuel pump relay to stay on). reinstall fuel line. Replace fuel. injectors are probably not in the best shape, tank is probably contaminated and with a fuel pump short on life. Check all vacuum lines front to back and areas of hoses you cant see. make sure all connectors are clean and not corroded from sitting, If I was to give a guess after all these were corrected.. try replacing the MAP sensor (manifold air pressure ) car wont do anything but idle if this thing is bad. Good luck

Depending on year. I would check cheap things first. First check lines for leaks. Replace Fuel Filter with new one. If fuel injected? have fuel injectors checked. If Carberator? Check for Vacuum leaks around the throttle body, Check Intake, and carb itself for leaks. Now i would go ahead and check the Fuel pump. If Injectors? Have the fuel pressure checked. If Carb? Try a new Pump.
You didn't specify what year and model or what engine. So It's kinda hrd to figure it out. but i gave you the basics for all engines.

remove and have the injectors cleaned and set
leaking injectors will allow fuel in when not required causing the detonation

the same way you took it apart. put a little grease around the rubber seals so they will slide in easier. just tap on the fuel rail while lightly tapping it into place.

Start with a tune up. Always take care of the maintenance to narrow the problem. It sounds like fuel isn't getting combusted correctly. Weak spark or fuel delivery is possible.
Change the air filter, and the spark plugs. Check the resistance in you plug wires with an OHM meter to the specs in the manual. Check for any small cracks in your distributor cap, and replace if suspect.
Run some injector cleaner to your fuel tank, and check the seal area of your injectors for any leak sounds. They do have fuel injector kits to replace the o-rings when they go out. The injectors are usualy easy to access. A mechanic stethescope can aid in listening with some isolation.
Check the fuel filter for any leaks at the connections.
Fuel pressure regulator could be suspect if the car isn't running well. It is easy to replace this part.
Smell any gas under the hood? Look for leaks with engine off, but key to ON, so the pressure is there.
At worst, it could be worn valves or the valves not seating correctly. This would require the heads to be pulled, so the valves could be removed and the seats in the head can be repaired at a head shop.
Good Luck!

If it is the throttle body type you will have to replace the injectors, the alchol in gas kills th plastic parts in the injectors, be sure to buy from the dealer and get the new ones that will work with ethnoal, also costs $105.00 each there are two of them.

Check AutoZone.com as they have an area where they can tell you where the parts are located on your car.