QuestionHi, the answers to your three questions are as follows:
1. yes the injectors were switched and immediately after starting the car the codes went to 2 & 3.
2. no the mechanic thought that would fix it so they did nothing else.
3. yes the codes are p0301,p0304, and p0300.
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THANKS, I'VE ALREADY CHANGED THE INJECTORS ON ALL 4 CYLINDERS IS THERE ANYTHING ELSE THAT I CAN DO SINCE THE SAME CODE STILL COMES UP.
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Hi, sorry about that. What i switched out were the feul injector assembly parts. I also had a new coil put on but that did not solve the problem. Thanks again for your help and quick response.
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hello, my 2000 tiburon check engine light came on about a month ago and since then i've been trying to have it fixed. It gave the codes p0300, p0301, and p0304. All misfire codes. I had the spark plugs, wires,ignition coil, the four ignition cylinders, and the fuel filter changed and still the light comes on and gives the same codes.Before we changed the ignition cylinders we switched the 2 and 3 with the 1 and the 4 and the the code for 2 and 3 came up as misfires instead of 1 and 4. Sometimes the check engine light will flash. I tried to determine what were the conditions when the flashing started and i noticed that it happens randomly, sometimes when i switch lanes,or when accelerating,and in stop and go traffic. Also before we changed the feul filter there was a lot of hesitation and knocking in the engine. I added a feul cleaner to the gas tank and did the fill up and that seems to have cleared up the power problems.I've spoken with two mechanics and they are stumped.If you can help i'd be most thankful for any suggestions.
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I know what you're referring to when you mention the plugs, wires, and coil, but I don't know what you mean by "ignition cylinders." Are you using this as another term for the coil?
The largest key to what's happening is that you can make the problem switch from cylinders 1 and 4 to cylinders 2 and 3. This tends to indicate it's a coil issue. Cylinders 1 and 4 fire off one coil pack, while cylinders 2 and 3 fire off another.
Please clarify for me exactly what it was you switched that moved the misfire from cylinders 1 and 4 to cylinders 2 and 3. This is the key to knowing what the problem is.
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If you moved #1 and #4 fuel injectors to cylinders #2 and #3, and the problem followed the injectors from cylinders 1 and 4 to cylinders 2 and 3, the problem is the two injectors on the cylinders that are currently setting misfire codes.
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Sorry. My fault. I apparently selectively forgot that you had replaced the injectors.
Let's concentrate on this statement:
"Before we changed the ignition cylinders we switched the 2 and 3 with the 1 and the 4 and the the code for 2 and 3 came up as misfires instead of 1 and 4."
I had presumed this to indicate you had switched the injectors. There's something that occurred in this step that should be the key to knowing the cause of your problem.
At this point I'd like to go back and make sure I fully understand what's happening.
1. When the misfire moved from 1,4 to 2,3, was it immediately after swapping the 1 and 4 injectors with the 2 and 3 injectors?
2. Is there anything else that was done to the vehicle between the time it had previously set P0301, P0304 and the time it had set P0302, P0303?
3. Are the codes you're currently receiving P0301 and P0304 (and possibly P0300)?
It's possible that you may have something in the fuel that's clogging the injectors. That would explain why the problem would move when you moved the injectors-- the clog went to the other two cylinders-- why it would return a short time after replacing the injectors, and why replacing the fuel filter might assist in restoring some power.
AnswerGotta say, there was sound logic in replacing at least the two injectors on the cylinders that were setting the codes.
At this point, we need to visit some out of the ordinary thoughts:
1. There may be something wrong with the new injectors,
2. The switching of the misfire from 1 and 4 to 2 and 3 may have been coincidental, or
3. There's something causing the injectors to fail or become clogged.
#3 is probably the most likely scenario. I'd start by removing the fuel rail and removing the injectors from the fuel rail. Then inpsect the fuel rail and the injector end that inserts into the fuel rail for any signs of clogging or foreign material. If you find foreign material there, what's happening is that the foreign material is getting in the injectors and clogging them.
The origin of the foreign material is probably in the fuel tank. The next step would be to remove the fuel pump and inspect the fuel tank for foreign material in it.
If you find no foreign material in the injectors or fuel rail, I'd recommend again switching the #2 and #3 injectors with the #1 and #4 injectors to see if the problem again moves.
