06-28-2011, 06:25 AM
Join Date: Jun 2011
Location: Sunshine Coast, QLD
95 sierra - blowing smoke when warm
Hi all, i have had a bit of a search and i cant seem to find anything simalar.
I have a 95 Sierra
and when she warms up it blows blue smoke, but mainly when idling, taking off at the lights, and big time when backing off.
under load, its not too bad.
I asumed it was valve stem seals, so i did them, and still the same.
I have just done a compression test (as good as i can with the push in Supacheap compression tester) and both cold and hot, all cylinders come up to 150PSI
Number 4 spark plug was very oily and caked with crap, the other 3 were fine.
could i have a cracked head or intake port or something?
very anoying, because it runs fine otherwise.
any advice would be appreciated.