Misfiring 16 cylinder natural gas electronic engine

Your year--make--model and engine size didn't post for some reason? That info would be helpful.
It means misfire on cylinder number 1. A lot of things can cause a mis-fire, fuel--spark--compression, something of that nature.

check the injector for that cylinder as the electrics is not the only thing to cause a misfire.. Put the injector in another cylinder and see if the misfire has moved

this code identifies that the computer in your vehicle has picked up that cylinder 3 is not fireing properly so i would say change the plug in cylinder 3 if not cured change the plug lead if thes dosent work then distributer cap or the electronic distributer check all these things in this order its just elimination really

Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly.

A misfire diagnostic code P0300 indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a random misfire code doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.

Symptoms may include the engine may be harder to start, the engine may stumble / stumble, and/or hesitate and other symptoms may also be present.

If you need this or additional details about DTC Fault Codes, feel free to contact us clicking the links.

Hope this helps and have a nice day.

Replaced the MAF sensor - nothing. Took it to a authorized toyota shop & checked compression which check out good and put the computer on. Computer read mis-fire on cylinder 1, and then multiple misfire (like it would jump around). We went ahead and replaced the fuel injector on cylnder 1 - did not solve problem as when we hook the computer up, misfire seemed tp stay at idle and seem better when running high RMP, but check engine light is on as it never went away. Went ahead and replaced the coil pack to cylinder 1 - nothing. what am i missing?

This sounds as if you have a vacuum leak, check all the lines and check the intake. There are a lot of things that will cause mis fire. mis fire code is triggered when the ecm reads a very slight difference in the time the crank sensor picks up a signal. Mis fires can be from electrical, vacuum, mechanical, and eletronic sources. If you can get it to a person/shop that read which cylinder are misfiring this helps alot, narrows the field. Let me know I can help. Also it helps to know what engine we are dealing with

If the engine has a P0305 DTC (Data Trouble Code) for a "cylinder 5 mis-fire detected", then the first thing to do is to do a compression test to determine if the mis-fire is actually being caused by a mechanical problem, or an electronic problem.

If the engine really does have low compression on the #5 cylinder then that is caused by a mechanical mis-fire and nothing electronic will repair it, and the most common causes for a mechanical mis-fire would be a burnt or bent intake or exhaust valve, a warped cylinder head or damaged head gasket, or a damaged piston. You can call around and find a repair shop that will do a "compression leak down test" if you want to know exactly what is causing the compression leak without any dis-assembly to the engine.

If you have not repaired the #4 mis-fire problem then re-setting or clearing the code will only last until the mis-fire is detected again (maybe only minutes or even seconds depending how bad the mis-fire is), and then the MIL (malfunction indicator light) will be right back on. Try changing the #4 spark plug and ignition wire first, if this does not solve the problem then there might be something more seriously wrong with your engine.

If you do not have a scanner to reset the MIL, then you can reset the MIL by dis-connecting the battery for three minutes and then re-connect the battery, and all of the data trouble codes should be cleared.

the blinking light is blinking a code that ID's the cylinder or cylinders that is mis firing, count the blinks, poss causes are defective ignition coil (one for each cylinder) or a defective spark plug, these are the common reasons other problems of course like a dead cylinder from low compression like a bent or burnt valve can also cause this, but that is very unlikely, U don't say engine type so assume this is a gas engine

When a cylinder mis-fires there is a reason. The dealer should have told you that. Most likely you have a fouled out spark plug. Which means you need new spark plugs and maybe wires. All this would be covered in a standard tune up. Once the bad spark plug is replaced, the computer will quit registering a mis-fire. Please give good ratings, they meen a lot to us.... Thank you