slight ping

302fordracer

302fordracer

New Member
Mar 27, 2004
738
0
0
Vancouver, WA
#1
I really dunno what to do here guys...I think I have fixed it cause it goes away for awhile and then it comes back...right now if it is sunny 70 degrees or hotter I get ping in the midrange (4k-4500) it is very slight so I must be getting close to getting rid of this thing but still it persists...I have recently had a dyno tune so the timing and a/f ratio are good, fuel filter is good, all new ignition, used seafoam, replaced act and ect sensors...I am at a loss...oh and btw I checked out the vacuum lines and it looked good but I will prolly replace those and the fuel pump soon enough... :shrug: :shrug: any ideas other than that???
 
#4
MAF wires clean? Are you using cheap gas like Flying J, Albertson's, Fred Meyer's, etc. If you are then try spending the extra .10/gal on Chevron gas. It is better and makes a difference. No pinging is good. Even a little pinging is going to bring down the engine's efficiency.
 
#7
to ping the engine has to be under the greatest load I can give it...going up hill at wide open throttle on a warm (70 and up) day...I use 92 octane gas from 76 everytime and yes I have cleaned the maf sensor...I am running autolite 24's no ignition upgrades and the ignition is all brand new as stated before..
 
#9
The Computers In The 94-95 Cars Are A Pain In The Ass. My Car Would Always Run Hot AND PING LIKE A MOFO EVEN With Just Simple Bolt Ons. I Tried Everything...all New Hoses, Radiator, Waterpump, Fan, And Nothing Worked. I Also Thought It Was A H/g But It Would Always Run Fine In The Evenings Or Early Mornings. Finally I Got An A9l Computer Conversion With Manual Fan Switch And It Never Ran Cooler, NEVER DETONATED OR PINGED AGAIN. Picked up A Few Tenths In The Quarter On The Motor And Almost A Full Second On The Unit. If You Want One Let Me Know...as You Can See From My Signature I Have One For Sale!
 
#12
It wasn't pinging before the dyno tune...the point of the tune was it was running wayyy rich and needed to be leaned out and since I already had the computer it was real cheap like 100 bucks..the pining came about just recently as the weather started getting over 70 everyday...
 
#13
302fordracer said:
It wasn't pinging before the dyno tune...the point of the tune was it was running wayyy rich and needed to be leaned out and since I already had the computer it was real cheap like 100 bucks..the pining came about just recently as the weather started getting over 70 everyday...
Click to expand...
How are your A/F ratios now? If this only happens during hotter ambient temps, I would wonder if the chambers are not a little dirty. It is strange that this came about after a dyno tune though. Will the shop touch up the burn for you for cheap?

Good luck.
 
#14
"touching up" the tune as you put it would cost me the same as a new tune...about another 100 bucks...see the tune is dirt cheap but I gotta pay for the dyno time...oh well if the above stated theory is correct and I need to clean my chambers that will be taken care of when I put on my gt-40 irons :)
 
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