Knocking and Pinging

Wheelie King · 10-29-2007, 07:13 PM

My '03 maxima knocks and pings pretty severely at 2K RPM, especially when I am going up hill or giving light throttle. Is this common and is there a common fix? Thanks.

The Hulio · 10-29-2007, 07:47 PM

I fixed it with one heat range colder plugs and Sunoco Ultra '94.

Joe.

wyche89 · 10-29-2007, 07:49 PM

Quote:

Originally Posted by The Hulio

I fixed it with one heat range colder plugs and Sunoco Ultra '94.

Joe.

new NGK plat spark plugs and premium octane should take care of it

*SoonerFan* · 10-29-2007, 07:51 PM

take care of your car and use the proper fuel...

*NmexMAX* · 10-29-2007, 09:44 PM

On cooler plugs/catch can/91+.

spdfreak · 10-29-2007, 11:50 PM

Has your car had the 17* timing change? If so this may be the culprit. Should be an easy fix by using prelium gas and colder spark plugs.

*SoonerFan* · 10-30-2007, 09:28 AM

Quote:

Originally Posted by spdfreak

Has your car had the 17* timing change? If so this may be the culprit. Should be an easy fix by using prelium gas and colder spark plugs.

you should use premium fuel regardless

HotMaxx02 · 10-30-2007, 10:46 AM

I always use premium fuel and the problem was still there.
Did plugs when i installed my headers and its gone now... or maybe i just cant hear it from the loud exhaust??

*NmexMAX* · 10-30-2007, 10:48 AM

Did you happen to go to a cooler heat range on the plugs?

HotMaxx02 · 10-30-2007, 11:55 AM

Just Bosh Platinum +2
(yes i know everybody hates Bosch)

Shu2k2 · 10-30-2007, 02:09 PM

I seem to have the same knocking problem. Thinking of going to NGK iridium one step cooler. Trying to get Nissan to talk to me about it but all I get is that they run the fuel very lean and the timing advanced for economy. Any way to use a bit more fuel in the 2k-3k rpm range to cool things off?

Nissan tech says we can retard the timing a bit but will loose power that way. What's with the 17* timing update?

spdfreak · 10-30-2007, 09:45 PM

Quote:

Originally Posted by Shu2k2

What's with the 17* timing update?

Search

*SoonerFan* · 10-30-2007, 09:47 PM

Quote:

Originally Posted by Shu2k2

What's with the 17* timing update?

*NOOBIES* - The "I AM NEW HERE BUT HAVE A QUESTION" thread

spdfreak · 10-30-2007, 09:58 PM

Quote:

Originally Posted by soonerfan

*NOOBIES* - The "I AM NEW HERE BUT HAVE A QUESTION" thread

Your too nice.

*SoonerFan* · 10-30-2007, 10:34 PM

Quote:

Originally Posted by spdfreak

Your too nice.

i didnt give him the answer...just the link to the proper place to ask the question.

DasYears · 10-30-2007, 11:33 PM

weird how its a different experience for everyone. i run my car pretty lean under high throttle (im at -10 on the vafc for everything over 4100) and i dont ever get pinging, even with 17* timing. in fact, the only time ive gotten pinging for the whole life of the car is when the dyno guy went 15.0 on the dyno after like 4 runs

'02_EMILBUS · 10-31-2007, 01:55 PM

I gotta ticking initially when starting then, it goes away. Low rpm tapping is there and I use premium fuel. I need new plugs and im i need to definitely do the timing advance!
What is the favorable heat range on the cooler plugs that have been mentioned??

If i turn the radio up the problem never seems to be there!

boris · 10-31-2007, 04:01 PM

What is the drawback using colder plugs? Power loss, mileage, etc.?

That Girl · 10-31-2007, 04:33 PM

Quote:

Originally Posted by Wheelie King

My '03 maxim knocks and pings pretty severely at 2K RPM, especially when I am going up hill or giving light throttle. Is this common and is there a common fix? Thanks.

Same thing happened to me after I put in a couple (maybe more) tanks of 87 octane gas. It went away as soon as I put in the higher octane.

z00york145 · 10-31-2007, 05:00 PM

I agree with the getting better octane gas, I'd replace the stock spark plugs while your at it.

wyche89 · 10-31-2007, 05:45 PM

Quote:

Originally Posted by boris

What is the drawback using colder plugs? Power loss, mileage, etc.?

i thought NGK plats were the best option for us

*maximadave* · 10-31-2007, 06:09 PM

Quote:

Originally Posted by spdfreak

Search

there are way too many discussions on this subject

spdfreak · 10-31-2007, 06:26 PM

Quote:

Originally Posted by soonerfan

i didnt give him the answer...just the link to the proper place to ask the question.

I know. I clicked the link for the hell of it.

I was being sarcastic.

Wheelie King · 10-31-2007, 07:00 PM

I use super unleaded/93 octane gas.

I checked my plugs this evening. I currently am using NGK R PLFR5A 11. I think NGK PLFR5A 11 are stock. I'm not sure what difference the "R" makes. I don't think it's a colder plug. As I understand plugs, a colder one is NGK LFR6AIX 11. Is that what people are using for colder plugs in their maximas?

*NmexMAX* · 10-31-2007, 07:16 PM

Quote:

Originally Posted by Wheelie King

LFR6AIX

I would use LFR6A's. Maybe add a catch can

I'm bored and the ToT's are a little lean this evening, so here you go:

IX = Iridium. Use this chart and plug a 6 in where the 5 is and you will have the equivalent plug in a colder heat range.
http://forums.maxima.org/showpost.ph...&postcount=120

A little background on heat range:
http://www.ngk.de/Spark_plugs.649.0.html

More background on catch cans:
HomeDepot: PCV Blowby Oil Catch Reservoir
New oil catch can...less ghetto
How-to for Blow By Catch Can

*aksansai* · 11-03-2007, 10:29 AM

My 01 had the pinging problem (but no knocking) and it was totally unrelated to plugs/coils/fuel. Mine was a MAF (but I don't know 5.5 gen's behavior with their faulty MAF).

Wheelie King · 11-03-2007, 09:31 PM

I added an oil catch can and changed my front 3 plugs. I'll change the other 3 next week. I also added some oil, a bottle of injector cleaner and reset the ECU. I'm driving it hard thinking that thousands of miles of highway driving in 6th gear may have resulted in weak ECU signals. From what I can tell, the pinging is a little better. We'll see once I replace the rest of the plugs run the car for a while.