As you can see I have a new problem that the dealer here says is a noisy injector?? Not likely. Anyway it happens on a cold start no matter what time of day and no matter what the weather conditions are(Hot or Cold). The truck has just under 40k, is an 08 NISMO, runs on sythetic oil and has a CAI. I might also point out that this noise goes away or turns into a faint tick after a few minutes. To me this sounds like a lifter and I had something much like this happen on my Titan and it was a lifter puck.
Any other ideas out there???
did they offer to replace the injector?
Can you hear which part f the engine is coming from. Top or bottom?
Sorry for the long time it took to respond, traveling..
To answer you guys questions, #1. No the dealer did not offer to change/replace them or even try some of the injector cleaner. I think that some lazy service writers use the excuse that "Nissans have noisy injectors" too much. I've heard this from several different dealers. One in Ok even told me that the E-10 fuel could cause noisy injectors??? #2. This is from the top side of the motor and seems to be on the drivers side. As I said it goes away after a few minutes. I havent tried isolating it to a specific cylinder, yet. The biggest difference between this noise and the one my Titan had is the Titan was continuous and never went away.
Should I try a different oi next oil changel? Different dealer here in SC?? My truck just rolled over 40k today and I need to do something or this is going to drive me insane. Not really sure what I can do at this point?
With a noisy injector would a fuel treatment work best?
IMO only as long as the lubricating part of any such treatment would last. Again thats only my thoughts using my professional experience using additives in the course of my job on engines. The engines I work on are engine/generator sets so there are significant differences in the application...
I think if I had my choice and the knowledge of the VQ engine, I would tear into it or at least swap out injectors. Getting a dealer to do it is my problem thus far.
I would replace the oil and run 89+ gasoline. If the tapping doesn't fade away i would take it to another dealership. If you keep getting fed BS, then go to the top lol. One of our moderators works for Nissan
OK, after changing oil and oil brands (Mobile 1 from Royal Purple) I still have the same noise. I also spent some time talking to a GM mechanic who said alot of GM's have a tap or knock thats caused by the entire rotating mass on a cold start-up. He thinks this could be what I am experiencing. I have never heard anything like that reported on any Nissan or Infinity.
Anyway, I am looking around the Charlotte NC area for a dealer that I can take it to and not get brushed aside or fed a line of BS.
More to follow.
(04-24-2009 12:11 PM)nismosteve Wrote: [ -> ]As you can see I have a new problem that the dealer here says is a noisy injector?? Not likely. Anyway it happens on a cold start no matter what time of day and no matter what the weather conditions are(Hot or Cold). The truck has just under 40k, is an 08 NISMO, runs on sythetic oil and has a CAI. I might also point out that this noise goes away or turns into a faint tick after a few minutes. To me this sounds like a lifter and I had something much like this happen on my Titan and it was a lifter puck.
Any other ideas out there???
Hard to believe that in all this time no one here has had or heard of this problem? I've talked to more Frontier owners here in NC that have it themselves or have heard my truck make this sound than I got answers here??
My truck goes back to the dealer for the forth time for this, so far the other three dealers have found nothing wrong or said the injectors are
noisey, and none suggested changing any of them??
Maybe no one here wants to speak up??
Well it happens to almost or all of us at cold starts. Mine happens for about a mile before the tapping noise fades away. I haven't noticed any tapping noise since i replaced it with conventional oil, but i haven't stuck my head out the window or listened to the engine after i turned on the vehicle. Plus it's getting warmer here on the coast. I don't think it's a serious problem, but in your case it's a little more troublesome since you pointed out that it happens hot or cold or anytime throughout the day. Oh, and some oil filters have a special feature that injects/shoots oil into the engine so your engine doesn't start 100% dry. I know Wix and nissan oil filters have this feature.
Ok, i checked and either the conventional oil and the nissan oil filter is doing it's job or it's not cold enough. I haven't started my truck in 24 hours.
You might consider trying a Sea Foam treatment. Add it to the oil as instructed before changing the oil and filter. If a lifter is only sticking, it will free it.
I have had great success in the past with an additive called Lifter Quiet, but I have not seen that on the shelf in years. It freed a stuck lifter in my old Oldsmobile 301 V8. It stayed freed up for another 100,000 miles until I sold the car with 225,000 miles on it.
(03-08-2010 10:18 PM)BlackTigerSE Wrote: [ -> ]Well it happens to almost or all of us at cold starts. Mine happens for about a mile before the tapping noise fades away. I haven't noticed any tapping noise since i replaced it with conventional oil, but i haven't stuck my head out the window or listened to the engine after i turned on the vehicle. Plus it's getting warmer here on the coast. I don't think it's a serious problem, but in your case it's a little more troublesome since you pointed out that it happens hot or cold or anytime throughout the day. Oh, and some oil filters have a special feature that injects/shoots oil into the engine so your engine doesn't start 100% dry. I know Wix and nissan oil filters have this feature.
Ok, i checked and either the conventional oil and the nissan oil filter is doing it's job or it's not cold enough. I haven't started my truck in 24 hours.
Now thats the first time I've heard most people have this noise? I know a few Frontier owners here and most say mine is fairly loud and only one other owner says his does it.
The thing that is most unsettling to me is how loud it gets under WOT, especially when the engine is not warmed up completely. I'll try and change the oil to a conventional type since thats the only thing I havent tried so far.
Also found out today the rear dif is leaking? Not sure what thats all about. I lost the rear in my Titan a couple of years ago. I've seen where some here have had that happen in Frontiers, I hope this isnt a sign the dif is ready to fail. Might be time to give this truck to my son...
There is a air vent in the rear diff. Mine leaks but i'm beginning to think i need to re-seal it. I just found out my transfer case sealant is shot and need to take it in on thursday. I suspect the loud sqeaking is coming from there. It won't fail as long as you have the correct amount of fluid, so take the bolt off and use your finger for measurement.
Oh and before you switch from synthetic to conventional i would use sea foam for the heck of it, it won't hurt your engine (if you do it right) and if that doesn't solve the problem, at least you will have a clean engine and fuel line etc. You could be one of the unlucky ones, but you still have a lot of warranty left, don't sweat it. If all else fails, see if nissan usa will let you video tape your problem so they can hear what you are hearing, and while your at it, post it on here.
Another suggestion regarding to the rear end. I would highly suggest doing the differential breather. It will take little time and effort.
Well I did get some of the Seafoam and put it in the truck as directed and I have to say that after 2 days of driving, the truck doesnt sound as loud as before so I am hopeful that changing to conventional oil tomorrow will fix it for good?
Now if my leaking rear dif turns out to be just a simple leaking gasket I will be even happier?
Reserector, Thanx for the info on Seafoam
conventional oil? I wouldn't count on it. Glad the sea foam worked out for yeah.
My truck is vibrating really hard... need to clean out my throttle body.
(03-11-2010 09:18 PM)nismosteve Wrote: [ -> ]Well I did get some of the Seafoam and put it in the truck as directed and I have to say that after 2 days of driving, the truck doesnt sound as loud as before so I am hopeful that changing to conventional oil tomorrow will fix it for good?
Now if my leaking rear dif turns out to be just a simple leaking gasket I will be even happier?
Reserector, Thanx for the info on Seafoam
Just wanted to offer an update as well as a thanx to those who responded here. After running the SeaFoam thru the truck for a couple hundred miles and changing the oil, the worst part of the racket I was hearing is gone at this point. I am truly left scratching my head on this one but I'm pleased that the noise is gone. Thanx again to you guys for suggesting the seafoam.
As far as the leaking rear dif goes, it seem the pinion seal is leaking slightly but enough that I saw it. The mechanic at the dealership thought it was a good find considering the leak was not that significant.
So the dealer replaced the seal under warranty, I hope!