1998 LS

Story:

Engine was rebuilt by me, my dad (mechanic) and the service manual.
New Piston Rings
New Connecting Rod Bearings
New Head Gasket
Head was sent to machine shop for valve job and hot tank
New Cap and Rotor
NEW SPARK PLUGS. NGK V-Power gapped @ .044

oil flushed at 1000 miles and replaced with 5w30 full syn
car runs 91 octane

after about 3000 miles engine started having poor cold starts. It was misfiring. I thought it was an idle problem so i replaced the IACV. Didnt seem to help. Today I removed my spark plugs and noticed that all four were FOUL. I replaced them and it solved my problems..

anyone know what/why the spark plug looks like this after only 3000 miles?






Modified by Loveless. at 9:44 PM 3/30/2008

 

damn......


<FONT COLOR="green"><FONT SIZE="40">WHAT THE ****!!!</FONT></FONT>

just drop a "K"ids series in there and call it a day like them other people

 

o2 sensor or air cloggage, but you cleaned your airflow

 

http://www.spark-plugs.co.uk/p...s.htm

see if you can compare it to any of those.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lmike6453 &raquo;</TD></TR><TR><TD CLASS="quote">o2 sensor or air cloggage, but you cleaned your airflow</TD></TR></TABLE>

i do have a CEL for o2 sensor. i will replace it today. i did not know tha the o2 sensor can cause that.

 

found the problem.

head gasket is messed up.

i might have bent it when i put on the head.

saw water in cyl #1 while doing a compression test.

 

Wow didnt know that could do those to all 4 sparkplugs... glad you found out what it was.