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Guys so I was on my way back on from the mountains and during the drive I noticed lack of power and studdering especially when I let off of the gas pedal. I thought the hills have done something to my transmission. So I pulled over at a rest stop when I eventually got to one after 30-40 minutes of driving. I pulled into a parking space I realized it is the engine. The check engine light was not on. Then as I left the rest stop after letting it cool down hoping maybe the hill over heated something the check engine light came on. And as I am going up the hills it would even flash.
Hoping it was a coil pack or boot but I have to get home I am 3 hours away from home. I drove it home and in the morning I drove to autozone to get the check engine light tested it came back as a po300. I took it home and quickly identified which cylinder is not firing. I swapped a coil pack from another cylinder next to it hoping I can move the problem if it is a coil pack but it did not it still stayed the same cylinder. Now I'm freaking out that its something more serious. I replaced the spark plug with a new one and that didn't do anything. Also will note while I am testing for spark by slowly pulling out the coil pack I quick flame ejected out of the hole... Hopefully this is not a head gasket issue but I will say this the coolant and oil is where it should be and the oil is not milky white.
What is wrong with my cylinder. I got a test kit for compression and I took all the spark plugs out and removed the fuel pump fuse then I tested each cylinder... Nothing seems to stand out from each of the cylinders. This cylinder is getting everything it needs but won't fire? And it is very rich as the spark plug from that cylinder was soaked with fuel and black I will post a photo below. Also the engine rattles with this missfire.
(1) Photo attached below:
Left spark plug is the one in the cylinder that is not firing. Right spark plug is what the other 5 cylinders look like.
Gonna have to agree with Turbobink, it's your fuel injector. It's malfunctioning.
With any luck, the bad injector is on cylinder 2, 4 or 6. Easy replacement.
Ultimately though, I'd replace them all due to their age.
Gonna have to agree with Turbobink, it's your fuel injector. It's malfunctioning.
With any luck, the bad injector is on cylinder 2, 4 or 6. Easy replacement.
Ultimately though, I'd replace them all due to their age.
I believe mine is on cylinder number 2 and it seems the whole air intake system needs to be removed.
Personally … and I’m speaking from my true experience … I’d find a reputable shop in your area and have your OE units rebuilt and flow-matched.
I have a new code p1320. I don't know if this is a code that I made happen due to troubleshooting. But this is an update on the matter thanks guys for replying and trying to help.
Many of us have used this guy's offering and nobody so far has reported a problem.
10% off right now, so $161 including shipping.
Don't forget all the Gaskets, Injector Grommets, and insulators, Fuel Pressure Regulator, Fuel hoses and clamps under the Upper Intake Manifold, Knock Sensor (lower Intake manifold gasket) and so on for a complete job. Might as well do the rear Valve Cover gasket too while you're in that deep. Cause trust me.... You won't want to do it again!
Replace them with which brand? Is aftermarket ok? Like Amazon or eBay? Hitachi on rock auto are sold out.
No aftermarket stuff. Get some refurbished, rebuilt OEM injectors on Ebay if you can't have your car down for 2 weeks while a reputable shop cleans/rebuilds them and flow tests them.
Oops I used this one to see which one it was. But I like your image better. So it's cylinder 1 oh well. But yeah I have to take all that stuff off. But I found a shop that will look at it for free tomorrow. I noticed some people saying aftermarket is ok in here and your saying use a set of OEM ones I don't have an extra set and I remember fuel injectors can be a pain to remove. I don't have $800 laying around for fuel injectors.... No way. The main thing is I hope my engine isn't done for.
Oops I used this one to see which one it was. But I like your image better. So it's cylinder 1 oh well. But yeah I have to take all that stuff off. But I found a shop that will look at it for free tomorrow. I noticed some people saying aftermarket is ok in here and your saying use a set of OEM ones I don't have an extra set and I remember fuel injectors can be a pain to remove. I don't have $800 laying around for fuel injectors.... No way. The main thing is I hope my engine isn't done for.
I also noticed it's a Chevy diagram.
Removing and installing fuel injectors is actually quit easy and takes seconds to do, if done properly. Getting to the injectors under the manifold is a different story. Being your first time, I'd set aside about 6 hours to do the entire job. Once you're familiar with the car, it can be done in 2 hours.
On a side note, that Chevy diagram is the FIRING ORDER of the injectors. The firing order doesn't necessarily coincide with the cylinder locations.....regardless, the diagram is useless for our beloved Maximas.
I'd set aside about 6 hours to do the entire job. Once you're familiar with the car, it can be done in 2 hours.
With all due respect to Wiz, his perspectives and experience, I’d recommend setting aside a ‘weekend’.
Notwithstanding the lack of ‘technical’ complexity of this project, I promise, you’re going to, from time to time, want to friggin smash s**t simply due to frustration and impatience.
This not a difficult project and I’m truly not trying to dissuade you … it’s a totally doable DIY undertaking … I’ve done it twice. You’re just gonna need to walk away now and then.
JECS are the OEM Brand Nissan installed in our Maximas.
The link in my post above is a set of 6 FLOW MATCHED remanufactured JECS Injectors from Motorman Fuel Injection.
As The Wizard states... This is the best offering out and MANY have used them with ZERO Complaints.
Mine have been in for years with ZERO PROBLEMS. 1999 SE
I've led the horse to the water. That's all I can do.
No, thanks for the information. I did not know that. If they are OEM then yes that's way better then paying $125 for a single one at an auto part store they are over priced. But I will say this.... My car is in a shop right now getting looked at. They towed it for free and are looking into it for free. Of which I am shocked.
Guys... I got the fuel injector replaced and the engine is still knocking and runs very poorly. I have a new code po134 and white smoke coming out the back of the exhaust. I was hoping this was due because of fuel but I have been told that would create grey/black smoke. Any help is greatly appreciated. Ask me anything... Feel free to ask me anything. Thanks. The new fuel injector did fix the missfire but I fear driving on 5 cylinders toasted my engine up. Let me know thanks
Also will not that there is exhaust gases emissions from behind the UIM. I no longer smell fuel since the injector was replaced. I'm thinking head gasket but I really hope not maybe bad EGR valve contributing to white smoke out the exaust? My coolant looks fine and my engine oil looks fine.
From personal experience, white smoke equals bad fuel injector.
Walk us through what you did. Did you only replace one injector? How did the swap go? Easy peasy? Did you replace the small black life saver-like injector orings? Lube the injector as it was installed? Did it pop in smoothly and w/o resistance?
I replaced all six injectors once with refurbished injectors, only to get white smoke from the exhaust. One of my newly refurbished injectors was still junk and causing the white smoke. Once I replaced the one bad injector (for a second time), all my issues went away. My point being, you still may have a bad injector.
From personal experience, white smoke equals bad fuel injector.
Walk us through what you did. Did you only replace one injector? How did the swap go? Easy peasy? Did you replace the small black life saver-like injector orings? Lube the injector as it was installed? Did it pop in smoothly and w/o resistance?
I replaced all six injectors once with refurbished injectors, only to get white smoke from the exhaust. One of my newly refurbished injectors was still junk and causing the white smoke. Once I replaced the one bad injector (for a second time), all my issues went away. My point being, you still may have a bad injector.
All Injectors were replaced. But I think the EGR valve broke as I was putting the UIM back on. The injectors installed very well the new injectors had orings already on the. And I used bulb grease on the two injectors as I installed them. The missfire is gone but I am having other issues possibly the EGR valve. I have smoke coming from the back of the engine so now I got to figure why that is... And the engine still doesn't have its full power back. There's no hisitation but she isn't as fast as before.
I'd check the gaskets at each (2 total and different part numbers) end of the EGR tube between the Intake manifold and exhaust manifold and make sure that tube is completely cleaned of all the tar that usually blocks it at 150K or above. And then I'd check the U shaped coolant hose and clamps in the same area.
And a poorly seated Upper Intake Manifold gasket can cause all kinds of performance issues.
Did you replace the 6 grommets that the injectors are seated into? FelPro sells a kit and this is a must after 26+ years. There are also "Insulators" that are placed on the Injectors that definitely needs replaced as well. No room for for any weak areas to ruin a rough job.
It sounds like you aren't doing any of the work yourself.
I'd check the gaskets at each (2 total and different part numbers) end of the EGR tube between the Intake manifold and exhaust manifold and make sure that tube is completely cleaned of all the tar that usually blocks it at 150K or above. And then I'd check the U shaped coolant hose and clamps in the same area.
And a poorly seated Upper Intake Manifold gasket can cause all kinds of performance issues.
Did you replace the 6 grommets that the injectors are seated into? FelPro sells a kit and this is a must after 26+ years. There are also "Insulators" that are placed on the Injectors that definitely needs replaced as well. No room for for any weak areas to ruin a rough job.
It sounds like you aren't doing any of the work yourself.
The codes you had earlier the p300 multiple misfire codes did you changed the oem spark plugs with new oem Ngk spark plugs. The code p1320 ignition coil signal code is your coils toast or are most likely toast did you get the consult2 on to test cylinder power balance to test the coils power resistance and functions and are you using oem coils Nissan's Mitsubishi or hanshins these cars don't like anything other than these brands that were listed anything else will cause the ses light and misfires and poor start and driving operations of the vehicle performance to suffer. The smoke your talking about is it overlaid gasket maker and is the gaskets and seals on properly and the egr tube on properley and bolted tight spec and is the manifold back on tight properly.
Apparently the gasket didn't align and I had to buy another EGR gasket. The car runs better no codes. But the engine still doesn't seem right like it does not run smoth and tiny hiccups here and there especially when the AC is running. The valve cover gasket got replaced, the UIM gasket got replaced and EGR tube gasket got replaced along with 6 NGK Pfr5g-11 spark plugs. I am not sure what the issue could be other then I could have some bad gasoline?
So the missfire from the injector is now fixed and I think I have issues related to removal and installing of the UIM or maybe coincidentally I have a bad EGR valve I am not sure how to get my car running like normal BUT it is ALMOST there I am not sure what to check out.
I didn't mess with any settings to the throttle body I removed the throttle body attached to the UIM. I think the issue I have is because of an issue with removing the UIM and I messed something up.
Update: The car is fixed.. new injectors, coil packs, valve cover gasket, and plenum gasket. Also brand new spark plugs(PFR5G-11). The car runs beautifully now with no issues at all and I hope it stays this way for a long long time.
