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Post by sport03 on Apr 15, 2016 22:38:14 GMT -5
I though that I had a valve tick but it turns out to be a noisy injector, it's quite at idle but when revved it makes noise. I'm wondering if any one knows a way to unstick these injectors so I don't have to go through hell to replace them haha
My grandfather put 2 year old gas in the truck without me knowing about it and now it caused the injectors to make noise. No drivability issues at all just a injector noise
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Post by dirk on Apr 17, 2016 17:56:04 GMT -5
Have you tried a high end fuel treatment or injector cleaner in it yet?
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Post by jkdv8 on Apr 17, 2016 19:28:46 GMT -5
Try to get a vid of the noise. It would help a lot more in determining. Any codes?
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Post by sport03 on Apr 17, 2016 21:05:39 GMT -5
I tried Lucas tune up in a bottle crap and that didn't help. And I have no codes. I thought it was a valve tick but I put a tethascoap on it and you can hear the noise from injector on cyl 4.
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Post by dclambertt on Apr 18, 2016 15:23:12 GMT -5
You might give some BG 44K a try. A little hard to find but available online.
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Post by ES_97Sport on Apr 22, 2016 18:28:31 GMT -5
I though that I had a valve tick but it turns out to be a noisy injector, it's quite at idle but when revved it makes noise. I'm wondering if any one knows a way to unstick these injectors so I don't have to go through hell to replace them haha My grandfather put 2 year old gas in the truck without me knowing about it and now it caused the injectors to make noise. No drivability issues at all just a injector noise Try a can of BG 44K fuel system cleaner. That is my #1 first step. Check the electrical system and make sure its not 'browning out'. I figured out last year that if the injectors don't get proper voltage that can also cause that 'tic'. Hook up an OBD scanner that will let you look at short and long term fuel trims. If the trims are going past +/-10, you'll also get that noise. Edward |
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Post by sport03 on Apr 26, 2016 16:39:05 GMT -5
 That's my fuel trims at idle At 2,000 rpm the short term went between -01.2 through -03.5 |
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Post by jkdv8 on Apr 26, 2016 17:17:39 GMT -5
Doesn't look to be out of the ordinary. Long term should be closer to 0 but can be up to -5%/+5%. Hard to tell from a still. It's better to monitor it live for a few minutes.
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Post by ES_97Sport on Apr 28, 2016 13:18:04 GMT -5
That's my fuel trims at idle At 2,000 rpm the short term went between -01.2 through -03.5 At idle doesn't really tell you a whole lot. ST fuel trims normally bounce around a lot +/- and they do this constantly. They'll do it less at idle but they will not stay stable like the LT fuel trims. So, unless they're continuously around some point on the scale then you're good. In other words, if they sit at -1-1.5 or +2-2.3 or something like that all the time you would have a problem. Going from +5 to -6 to +1.3 to something else is normal. ST fuel trims don't tell you a lot unless they're not moving or swinging from +15 to -15 constantly, or they're stuck on one side of the scale all the time. What you want to do is look at fuel trims over time. Just doing a 'spot check' is almost worthless unless there's something horrendously wrong. To do this you REALLY need software that will graph - AND LOG - real time. Its not impossible to tell if there's something wrong using dashcommand but its not all that easy either. I think Torque has graphing, but in my experience its been a little better for diagnostics than dashcommand. ScanXL is a true diagnostic OBD application but it requires a laptop. Look for large swings in LT FT. Under no circumstances should you see LT swing from +/- and back unless the normal LT FT is close to zero. If its normally +2 and swings to -5/6 and then back to +2, something is amiss. LT FT over time exceeding +/- 2.5-3 (but less than +/-3) generally indicate a problem. The techs look for anything over 3. This is OVER TIME - days/weeks of driving, not 'there was this time, once, for 5 minutes when...'  + FT means the engine is running lean. - FT means the engine is running rich. My big Sport runs +2-2.5 LT FT. Always has no matter what engine. Edward |
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Post by jkdv8 on Apr 28, 2016 22:00:56 GMT -5
ScanXL is a true diagnostic OBD application but it requires a laptop. Edward Yea that's a good one. First one I bought when diagnosing issues. Yea I don't think dashcommand does graphs. |
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Post by ES_97Sport on Apr 29, 2016 17:23:44 GMT -5
ScanXL is a true diagnostic OBD application but it requires a laptop. Edward Yea that's a good one. First one I bought when diagnosing issues. Yea I don't think dashcommand does graphs. Nope. It doesn't. It does log, but I never could figure out how to get the data into ScanXL so it wasn't very useful. Ok program, though. Being able to log and graph an hour+ of driving and then come back and look at it and compare it to other logs/graphs is really nice. Edward |
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Post by jkdv8 on Apr 30, 2016 12:43:49 GMT -5
Oh and it's the OBDwiz I use that was free not the ScanXL. The OBDwiz does the graphing though and there are some free apps that are suppose work with the dongle that graph.
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Post by sport03 on Nov 6, 2016 12:28:27 GMT -5
youtu.be/74dPcB-ynwwSorry for such the delay on a video lol Now the noise on cold start in the morning, there's no noise About 30 seconds later the noise will start to come in slowly and then never go away. Once it's warmed up and idling at a stop you can't hear it until it's revved. I was told injectors but I'm honestly not sure. I don't want to rip into this for no reason. I tried sea foam in the intake, BGK 44 can for the fuel (I think that's what it was) and none of that helped. Maybe you guys know, I'm stumped I'm now at 201,000 miles 3.5 V6
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Post by jkdv8 on Nov 6, 2016 13:52:58 GMT -5
Sounds like lifter tick. Oil needs to be changed, wrong viscosity, not enough, or it's leaking out the cam or cover seals.
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Post by sport03 on Nov 6, 2016 16:58:10 GMT -5
Sounds like lifter tick. Oil needs to be changed, wrong viscosity, not enough, or it's leaking out the cam or cover seals. I change the oil every 2500 miles, use Valvoline max life 5w-30. I tried it with the engine restore can and nothing has been working. Like I said it has only started doing this once my grandpa but old gas in the tank |
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