Running lean help with diagnostic
#1
Senior Member
Posts like a Turbo
Thread Starter
Join Date: May 2006
Location: Chicago, IL
Posts: 496
Likes: 0
Received 0 Likes
on
0 Posts
Running lean help with diagnostic
Ever since I sea foamed my engine which was about a month ago, I've been running lean. After the seafoam I changed my plugs and oil within 4 hours, I gave NGK a second chance.. 2 days later I was running lean, so lean that when I turned a corner the car would stall. I pulled the plugs out and they were white as ever, they looked painted! so I put the delco'* back in since they wasn't that old. 2 weeks later I decided to switch over to autolites because I was going to invest in they're iridiums and my front (delco) plugs show signs of running lean while the rear was ok.
Now I have the autolites in and I'm going on 2 weeks with them. My HP is sluggish like I'm running lean. Back when I was pouring the sea foam in the vac line to let it stall out, I heard a loud pop in the evap canister area as it stalled. Maybe it was the canister or maybe it wasn't. Could anyone help me out with some luck.
Now I have the autolites in and I'm going on 2 weeks with them. My HP is sluggish like I'm running lean. Back when I was pouring the sea foam in the vac line to let it stall out, I heard a loud pop in the evap canister area as it stalled. Maybe it was the canister or maybe it wasn't. Could anyone help me out with some luck.
#2
Junior Member
Posts like a Ricer Type-R
How do you know you're running lean? You have a scantool? If so, what are your LTFT'* and STFT'*?
What'* your fuel pressure?
Turning and stalling has nothing to do with running lean. 92 fuel tanks are known for that.
What'* your fuel pressure?
Turning and stalling has nothing to do with running lean. 92 fuel tanks are known for that.
#3
Senior Member
Posts like a Turbo
Thread Starter
Join Date: May 2006
Location: Chicago, IL
Posts: 496
Likes: 0
Received 0 Likes
on
0 Posts
I don't have a scan tool, I pulled my plugs and the tips are kind of white. My exhaust tips are kind of white too, but that could've been from when I sea foamed since only white smoke came out the exhaust.
#4
Senior Member
True Car Nut
Join Date: Aug 2004
Location: In your garage, swipin' da lug nutz
Posts: 3,067
Likes: 0
Received 1 Like
on
1 Post
You REALLY need to find a scantool...somehow, someway. It has as much worth, if not more worth, than a factory service manual. You can have one or more of many possible issues, and without any scan data, it may take us a while to figure out, and alot of blind shootin'.
I suggest a test that a nice admin did for me...unplug your MAF. Does the idle change for the better? Drive it around for a few minutes...does it feel more responsive? If it does, start lookin' for another MAF sensor. Again, this may or may not be your problem, but there is nothing wrong with eliminating or confirming the MAF.
I suggest a test that a nice admin did for me...unplug your MAF. Does the idle change for the better? Drive it around for a few minutes...does it feel more responsive? If it does, start lookin' for another MAF sensor. Again, this may or may not be your problem, but there is nothing wrong with eliminating or confirming the MAF.
Thread
Thread Starter
Forum
Replies
Last Post