pinging and knocking sound from engine? need help
#41
2002 maxima se
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Join Date: Apr 2006
Location: BUENA PARK, CA (orange county)
Posts: 1,082
Trust me it runs like a brand new car now. Not even a 1% pinging sound i can even drive with the open hood and rolled down windows and will not hear any pinging at all. Well knock on wood i guess
#45
So, how much are you selling it for or where to get that snake oil in bulk? This thread is funny, I learned so much it's unbelieveable .
#47
In the context of this thread it is: the OP had a problem and it 'magically' went away after using substatntial amount of additive as normal doze wasn't enough - it falls into snake oil category IMHO. Post #32 probably nailed the actual reason but hey - whatever spins your wheels.
#49
2002 maxima se
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Join Date: Apr 2006
Location: BUENA PARK, CA (orange county)
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You mean the techron fuel system cleaner? i bought them on sale it was buy 1 get 1 free at pepboys. The reg price is $8 per bottle i think. And it really worked like a magic. I dont think theres any harm to use large quantity of fuel cleaner.
Last edited by OC guy; 09-25-2009 at 10:26 AM.
#52
2002 maxima se
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1 bottle wont do a thing. put at least 8 to 10 bottles total, but do one on each fill up. I been using the premium gas and have had pinging since then but after using 8 bottles of techron fuel system cleaner the pinging disappeared completely. Just to mention that i also used the seafoam after the techron fuel system cleaner treatment. 8 bottles of treatment will completely eliminate the pinging "mark my words".
#53
Once again, it might eliminate the (severe) audible pinging. I thought my engine was completely silent too until I drilled a hole in my firewall to install a clutch pedal. I use chevron 93 octane exclusively in my vehicle and it still knocks randomly after it has heat soaked. Some injector cleaner might fix this temporarily but due to head design it is more prone to do it than it should be and will almost inevitably return.
Glad it worked for you though.
Glad it worked for you though.
#55
Severe pinging, hmm how i DONT miss that, it was a ongoing issue for almost 6 months or so, went from changing intake gaskets, checking knock sensor, fuel pressure probs, reinstalled oem intake, nothing resolved it, I bought a new MAF, everything went away.
I do have a thread called "severe pinging" if you want some pointers.
I do have a thread called "severe pinging" if you want some pointers.
#57
I seafoamed my Max, and used chevron techron twice and pinging is practically gone. My fuel consumption improved as well going from 13-14 mpg to 17-18 in the city(avg. speed 15 mph) and the engine feels more powerful and responsive. When someone stole my parking spot, I let go of the brakes and floored it-it was one awesome peel out! Anyway, I will do another 2 treatments of chevron, and will seafoam my car again before next oil change and maybe switch to synthetic oil. I love my Maxima again!
#59
#61
You are saying that 6-7yrs has changed what you can put in your gas and crankcase... saying that it was bad. I'm asking you what has changed from then and now. Forums haven't changed that fact.
#63
2002 maxima se
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iTrader: (7)
Join Date: Apr 2006
Location: BUENA PARK, CA (orange county)
Posts: 1,082
dont use too much seafoam but you can use the chevron techron fuel cleaner on every oil change or on every 25k. i dont think that the oil change is really necessary after each techron treatment unless you having seafoam treatment aswell. I use techron cleaner on every 2k to avoid the future pinging cause i am sure the pinging will come back if i stop using the techron cleaner. The another way to avoid pinging is using 93 octane and we dont have that in CA.
#64
That's what I meant, I'll Seafoam it again before the next oil change because I didn't do the intake(break booster). As far as chevron, I just want to completely get rid of pinging. Then I'll just use it at every few k. Thnx for the post, it proved very usefull.
#67
you don't have to buy expensive cevron techron. This is the formulation http://msds.walmartstores.com/cache/319320.pdf
75% is mineral spirits that you can buy in home depot for $7 / gallon. the additional additive like benzene is not really necessary for good running car.
75% is mineral spirits that you can buy in home depot for $7 / gallon. the additional additive like benzene is not really necessary for good running car.
#68
#69
this turned out to be a temporary solution. My more recent car was a 2012 G37, brand new... Guess what, during light load on throttle (light enough to hear the engine over that sweet exhaust roar) I heard.... Drumroll pls! Yep, pinging or spark knock or whatever you wanna call it. Thank god Sandy solved that problem, no more G37, no more spark knock. You want a permanent solution, buy a lexus or a BMW.
#70
#72
this turned out to be a temporary solution. My more recent car was a 2012 G37, brand new... Guess what, during light load on throttle (light enough to hear the engine over that sweet exhaust roar) I heard.... Drumroll pls! Yep, pinging or spark knock or whatever you wanna call it. Thank god Sandy solved that problem, no more G37, no more spark knock. You want a permanent solution, buy a lexus or a BMW.
#73
I get a light spark knock every now and then, ever since i changed my knock sensor, before it would hardly ever do it.
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