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[mario]

well my mustang 2008 v6 4.0 had her valve lifters changed and while the ticking sound did go away sorta..car still has misfire and ticking sound..and i know the ticking sound has to be because of the misfire so i kept it simple like eric the car guy says..compression,spark,fuel..so we changed the alternator,battery,spark plugs and ticking sound still continues so we did a compression test on her again from the time valve lifters were changed and again 150psi on all cylinders we also revved engine to see if it was rod knock but car didnt make any rod knock sound..so only thing left in spark and fuel is ignition coil pack which all spark wires share and the fuel injectors that maybe are clogged..here is 2 videos i just made right now also this misfire started from bad gas that contained water..fuel filter has been changed and had a lot of water when changed. i use only shell gas except only that day i stoped at a local small gas station due to running on low fuel on a trip we were in but its been about 2 months and i been only running shell gas now.

in the videos you notice injectors tick more on the left side than right side and when car misfires exhaust makes puff sound and car vibrates with a slight jump in rpm

http://www.youtube.com/watch?v=fLt3XPt6tkE
http://www.youtube.com/watch?v=QLFtAZc5gjQ

Topic

[college man]

Have you checked fuel pressure? try doing a power balance test

[mario]

[quote=”college man” post=64107]Have you checked fuel pressure? try doing a power balance test

http://www.youtube.com/watch?v=bAOmUjAjNjE%5B/quote%5D

Isn’t a power balance the same as a compression test? Haven’t done fuel pressure test yet but is it possible faulty fuel injector to cause this sound

[sam priem]

a compression test is used to read the pressure inside the combustion chamber. a power balance test is done by disconnection either fuel or spark from a cylinder to see if its working properly. this test would be used to see whether or not you had a spark or fuel problem. the video posted above explains how to prperly perform a power balance test.

[college man]

[quote=”sam_priem” post=64132]a compression test is used to read the pressure inside the combustion chamber. a power balance test is done by disconnection either fuel or spark from a cylinder to see if its working properly. this test would be used to see whether or not you had a spark or fuel problem. the video posted above explains how to prperly perform a power balance test.[/quote]

+++1 🙂

[mario]

well tried to do the power balance test but couldnt due to my car is supercharged and injectors are in the bottom and dont let me disconnect one by one 🙁 though i check the coils since this is the only thing i havent changed and spark plugs and spark wires have been changed how do i check coil pack is working one by one ? since all my spark wires connect to a coil pack box

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[crypkilla]

pretty sure you can do a power balance test by disconnecting either each fuel injector harness or each spark plug wire. you can easily remove the spark plug wires from the ignition coil. might wanna use rubber handled pliers.

i think unplugging the injectors just avoids the potential for a really nasty shock. also it’s maybe not good for ignition coil and/or ignition control to have a spark plug wire not connected and able to spark but i dont really know about that. can anyone elaborate? actually googling “damage the ignition coil” (with the quotes) turn up lots of sources saying that it can/will damage the ignition coil but none really say why or how except to say like “might overheat the coil” which im not really sure is the exact method of failure or what damage actually occurs…

this often comes up when talking about verifying spark (not doing power balance tests) and in that case i think so long as the spark plug body stays grounded and the plug is able to spark (if it’s otherwise going to) then no harm will come to the coil. but obviously in the power balance test the spark is unable spark and so i guess that’s bad. i just wish i knew exactly why.

so on second thought maybe dont do a power balance test that way?

[mario]

x2 i also read disconnecting coils while running increases damaging them but dont know why either…am really leaning towards the fuel injectors being clogged up from the water in the fuel and causing them to have a knocking sound and misfire..though car doesnt show any codes though the car does have lost of power and also when we did a datalog on the stang it show bank 1 rich because i am running a safe tune and using higher octane than recommended but bank 2 shows lean and that is the side where the injectors ticking is louder and out of rythme aswell where the misfire in the cylinder when i had water in the fuel happened.while the driver side injectors tick normal…fuel related misfire?

[crypkilla]

i dont think water clogs fuel injectors.

just out of curiosity, how would a person know there was water in their fuel filter? i dont think there was ever any water in ur system at all. unless you have a fancy aftermarket water separator, your fuel filter does not separate water. if there was enuf water in your filter to know that it was water, then there would have been tons of water in the whole fuel line and the car would not have run.

[crypkilla]

could the ticking be detonation (spark knock)as a result of the tune? so bad that the higher octane fuel doesnt stop it? can you look at the timing advance on a scan tool?

injectors out of rythm? how do u know? is the mustang bank fired or sequential fuel injection?

when you say bank 2 shows lean, what parameter are you looking at? this matters. an O2 sensor showing lean could mean it’s lean. a short or long term fuel trim showing a lean (negative) correction means it’s correcting for a rich condition.

anyway, i think the one bank being lean and one being rich is the direction you need to investigate, but need more details.

[crypkilla]

in reference to power balance tests I found this:

but the picture associated with it is too dark to see. Im not sure what they’re talking about but im curious to know.

Source: http://www.powayusd.com/teachers/kfaverty/ch5m.pdf

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[mario]

car had water due to poor quality gas of a gas station that puts water in their gas to make it last longer and before i didnt know so i datalog my car to verify tune and car misfired as soon as i got home spark plug electro closed due to detonation since then it has been ticking and compression is good 150psi all cylinders no rod knock at all also when misfire happen it messed up my spark plugs and spark plug wires..also when i changed fuel filter a lot of water came out when i took it off and did not smell like gas and when i got it on me it didnt have that fresh feeling when you get gas on your skin like i did before the times i have changed my fuel filter..also the tune i currently have right now is for 91 octane but am using 93 octane..and reason i suspect injectors being damaged by the water in fuel..rather than drop my gas tank..i used heet and it allowed the water to be burn off cause car was pinging when it was burning the water with the fuel..and now i use it from time to time and i dont get the same reaction as before cause there is no water in the gas tank and i now refill only shell quality gas.

[crypkilla]

you have no idea what you’re talking about. nothing you said is how any of that works.

there is no water in your gas.

detonation is your problem. fix your tune.

misfire does not “mess up” your spark plugs, and definitely not your spark plug wires.

did not smell like gas and when i got it on me it didnt have that fresh feeling

inconclusive and does not address my earlier statement.

if you had water in your fuel the only place it would “burn off” is in the combustion chamber. water does not cause detonation. it will cause misfire.

gas stations do not put water in their gas. you can not water down gas. they separate. you have NO idea what you’re talking about.

^ if nothing else read the very last line ^

http://ag.utah.gov/divisions/regulatory/weights/faq.html

u can try to mix gas and water and see where the gas sits on top of the water.

the only other way gas can be “watered down” is with ethanol. a quick google search will show you how to test the amount of ethanol in your gas. gas stations dont have the means to add ethanol (or water) to their underground tanks. they buy their gas from the refinery or wherever. And that same refinery (that has all kinds of inspections regularly and adheres to all the laws and regulations it needs to in order to stay in business and not get fined) sells gas to all it’s local gas stations including Shell and the little independent mom and pop place. it’s all essentially the same gas. you’re just overpaying for advertising and gimicky additives. and by your own account, unnecessary octane. but with the tune and detonation is sounds like you have, you might wanna try race fuel 😉

[mario]

i am not gonna get into a online arguement..if you cant help me get out of my thread quite simple..gas stations dont put water..um this was a small no name gas stations and several have the same problem because of their gas and diesel..and my tune is the same one i have had for 5yrs buddy..i wont argue it is probably pinging due to one of the injectors not working fully in one of the cylinders therefore causing that cylinder to knock i never said water did i said water caused the harm to the injectors and caused the spark plug electro to close due to detonation of no fuel on that cylinder..am done here with you..oh and just because one injector is out dont mean the car wont turn on..it has to take out most of the fuel system

[college man]

see if this helps.

http://easyautodiagnostics.com/ford_coil_pack/ford_coilpack_tests_1.php

[crypkilla]

dude. Im just saying that gas stations can not and do not water down gas. water and gas separate. the pump would wither give you all water or all gas. one tank of bad gas did not hurt your car. it just doesnt have anything to do with your problem

i said water caused the harm to the injectors

no. cuz there was no water. and it wouldnt harm your injector. but u may have a clogged/leaky injector.

can you use a scan tool to check for stored codes and get more details about the short and long term fuel trims on each bank?

when did you change your plugs last? can you pull them out and take a look and take a good picture? they might provide some good insight into what’s going on. it might not take long for the results of detonation of oil fouling to show up.

FYI higher octane fuel can cause carbon build up that can cause detonation.

[Author]

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