Replacing spark plugs every 250 to 500 miles! Help!
05-02-2015, 02:38 PM
#1
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Replacing spark plugs every 250 to 500 miles! Help! Ever since i installed bbk intake on my 2000 TA ramair i keep what i call cooking spark plugs. It starts with chuggling/misfire at low rpm, then over 4000 rpm then eventually the whole rpm and load range. Had it tuned to no avail. The plugs look pretty good with a thin whitish to tan coloring on the upper eletrode. If i replace the plugs it runs great for another 200 to 500 miles. Sets no codes at all and missfire counters show nothing. Running Ngktr55s But is burned out the OE delcos and a set of E3s also. Fuel psi and volume look good. WTH? About to go back to the stock intake and see what happpens.
05-02-2015, 10:43 PM
#3
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Do you have a scanner to check the LTFT (Long Term Fuel Trims)?
Or at least scan for any codes?
Not doubting you, but when you say "fuel psi and volume look good", what and how did yo measure it.
This is is very unusual and every assumption may need to be "challenged".
Hopefully someone can help you.
Or at least scan for any codes?
Not doubting you, but when you say "fuel psi and volume look good", what and how did yo measure it.
This is is very unusual and every assumption may need to be "challenged".
Hopefully someone can help you.
