|
Post by denz on Sept 30, 2009 18:24:36 GMT -5
what do your guys spark plugs look like after 600 or so miles. this is my first turbo car and my feeling is they look lean. but im used to big fuel v8s that used to load up at lights and run pig rich. here is some pics of mine, now i know you cant read plugs threw pics but you get the idea. also has la3, big vam, 36inj, 255 pump, on 10 pounds boost with 93 octane and premium fuel switch set at 86 oct and k/s still pluged in. s729.photobucket.com/albums/ww291/sst23/
|
|
|
Post by FRANK/TurboTempo on Sept 30, 2009 19:02:44 GMT -5
They look a bit lean to me . try to ritch it up a bit. till you get a light brown. and you should be ok.
P.S. try to fix that A.S.A.P.
|
|
|
Post by denz on Sept 30, 2009 20:20:18 GMT -5
my fuel pressure says 55psi at 10 pounds boost. at idle 36 with vac and 44 no vac. what is your suggestion.
|
|
|
Post by denz on Oct 1, 2009 7:11:28 GMT -5
why so lean with only 10 pounds of boost i thought stock setup can handle this or is my set up to big and at 10 pounds i need increased fuel.
|
|
|
Post by Stinger on Oct 1, 2009 12:24:26 GMT -5
What was the running procedure before you pulled these plugs? In other words, what was the full running procedure from new plugs to removed plugs? Was the car shut off at WOT? Was it idled after the pull before removed?
|
|
|
Post by denz on Oct 1, 2009 16:19:27 GMT -5
drove home from work half way home spun it up a couple times no higher than 6 grand and only threw 3rd gear, rest of the way home drove speed limit to give turbo time to cool pulled in the garage let idle for about 3 min shut down. then i let it cool and pulled plugs. round trip 27 miles, as far as the life of plugs i daily drive it and on the street i have some fun but who doesn't. for a little bit i had a air leak but that was corrected after 200 miles of daily driving but during leak i only had 6 pounds of boost to them also when i first put them in the gap was 43 and i did not check before, after about 400 miles when i tried turnning up the boost to 10 it missed so checked plugs and nottice they wer big gap and were lean looking. so i regaped to 32. continued to drive and at 600 miles this is them.
|
|
|
Post by Stinger on Oct 1, 2009 22:37:33 GMT -5
The plugs only indicate the air/fuel ratio the engine was running at for the last 5 seconds or so. This means what you are looking at on those plugs is the air/fuel ratio as it was idling right before you shut it off.
To properly read plugs you are supposed to install new plugs, run it wide open and then shut it off, coast to a stop and pull them on the side of the road and put in different plugs to get home. There are two problems with this on turbofords...it is REALLY hot near the turbo after a wide open run and it is hard on the turbo to shut it off like that.
Up to about 230rwhp the stock fuel pressure is typically sufficient. You certainly aren't anywhere near that hp level at 10psi.
|
|
|
Post by denz on Oct 2, 2009 6:44:01 GMT -5
so what do you recommend i do i don't want to run lean. so ill make a run and pull in my drive way and let it cool and pull the plugs. one hot shut down om my turbo should not kill it. what do you think.
|
|
|
Post by Stinger on Oct 2, 2009 10:36:45 GMT -5
Making a run and then pulling into the driveway won't work unless you are wide open coming into your driveway.
A wideband 02 meter is the easy way to know. These cars run rich in stock form. If it isn't detonating then it's almost certainly not lean.
|
|
|
Post by denz on Oct 2, 2009 21:45:48 GMT -5
ok so what is a good affordable wide band so i can see my air fuel during boost. also i tried to use my permium fuel switch and did not notice a diff. is there a way to test it.
|
|
|
Post by Stinger on Oct 2, 2009 22:49:05 GMT -5
Check innovatemotorsports.com
|
|