pinging

[mightyterc]

so i change the CVs on the weekend, and now its started pinging

Any quick remedys??

what do u reckon

cheers

[Mac]

something loose?

make sure those axles are all the way in the tranny (I put a pry bar on the mettle ridge on the inner part of the CV and gave it a smack with a rubber mallet to make sure it was in place, sure enough it moved in about 1/8" or so) make sure the gland nut is secure, it dosn't need to be super tight, about as tight as a lug nut, the cotter pin is there to make sure it dosn't pop out.

[neonsport]

You know, the nut on that CV is supposed to be torques to 137 lb/ft. I wonder how they came up with that number.

BTW, none of the techs at my dealership put a torque wrench on them, they just set the impact and go. Myself, I use the same breakover bar for loosening them and tightening them, and I've always gone by feel.

[GTSSportCoupe]

so i change the CVs on the weekend, and now its started pinging

Any quick remedys??

what do u reckon

cheers

If it's your engine thats pinging, make sure your ignition timing is set right. Also, the engine running too hot can cause some pinging. You can always run higher octane fuel too.

[Petros]

If you mean engine pre-ignision, you can check the timing, go to a cooler spark plug, make sure it is not running too hot, switch to premium (higher octane) fuel.

[mightyterc]

YEr, its engine pinging,but how do u pick a cooler spark plug??? how do i know? And also, since i have to mix my fuel with lead additive, if i get the mixture wring, could that change the spark temp?

Ill change the oil and give it huge service this weekend

cheers

[Petros]

the numbers on the spark plug determine its "temp", some are designed to run hotter than others, if you are running too hot a plug you will get pinging. The general rule for spark plugs is to run the "coolest" type of plug you can without fouling (too cool you will foul the plugs with black carbon deposits). Your auto parts store can help you select a cooler plug off their charts. Get the number and type of plug you are running now, and take to an auto parts store and ask for the next one or two cooler plug.

If the engine is running hot you will also get ping, so make sure it is running in the correct range (lower half of the gage if your gage is working correctly).

The mix of fuel additive determines the octane rating and is unrelated to spark plug temp. the higher the octane rating, the more resistance to pinging. If you mess up a mix, you will only have a different octane rating for that tank. If you are not getting excessive ping, than there is no issue with it. You want to run the lowest octane fuel that will not give ping, only because the lower octane cost less. If there is no ping, then the extra cost of the high price fuel is a waste of money.

also note that if your EGR is improperly working, or spark timing is off, or the vacuum advance is not working correctly, you can get ping. YOu should check these as well.

The oil will not affect the ping either, but change it if it needs it.

good luck.