Tuned maintenance
I've noticed that my car afterfires alot more now that the weather has gotten humid and sticky . When i shift out of 1st to 2nd it sounds like an SRT-4 lol snap crackle pop! . Every once in awhile i will get a loud pop after letting of the throttle ..... like a full blown backfire ...... the motor is almost at an idle like if your just coasting to a stop after giving 1st a run up to 4K rpm .... or if your shifting really slow to 2nd...... then POP! . My LTFT's get worse with the humidity .... its at -7.1 today. I've only seen positive fuel trims one time since ive owned my car...... right after i Seafoamed it .
I'm wondering if I should throw a set of plugs in her .... I'm at 10K miles and 8K have been on a Superchips tune . I've seafoamed her twice and I can't believe how bad it smoked .... the carbon build up on these Direct injected cars must be nasty . I often wonder if the intake valves stick a little sometimes cause the exhaust note with change out of no where and sound boggy . Some of the braver members should pop the intake manifold off and take a look at the valves .... then we might know how they are holding up to gunk build up 8)
Here is a pic i found of a DI motor with 22K miles on it
I'm wondering if I should throw a set of plugs in her .... I'm at 10K miles and 8K have been on a Superchips tune . I've seafoamed her twice and I can't believe how bad it smoked .... the carbon build up on these Direct injected cars must be nasty . I often wonder if the intake valves stick a little sometimes cause the exhaust note with change out of no where and sound boggy . Some of the braver members should pop the intake manifold off and take a look at the valves .... then we might know how they are holding up to gunk build up 8)
Here is a pic i found of a DI motor with 22K miles on it
If the intake valves are that bad i wonder what the throttle body looks like ??
Yep i'm sure it's because of the cattless DP but mine has been getting progressively worse as time goes by ..... must be the stock Resonator and muffler are wearing in and unable to keep it quiet anymore.
Its funny .... my car smoked like a bitch in the driveway for a good 5 minutes ..... and then kept smoking for about 5 miles down the road . I honestly thought i hurt the car and it was burning oil cause it wouldn't stop smoking lol.
Last edited by rukkee; Jun 4, 2010 at 11:08 AM. Reason: Automerged Doublepost
lol
Senior Member
Joined: 09-23-08
Posts: 6,621
Likes: 0
From: Raleigh, NC
I have never used the seafoam stuffs... but am going to give it a whirl.... excuse my newbstyle question but where the hell do you pour the **** in for the vacuum line...
I know some goes in the oil, some goes in the gas, but what vacuum line do you use???
I know some goes in the oil, some goes in the gas, but what vacuum line do you use???
Senior Member
Joined: 05-06-08
Posts: 24,605
Likes: 1
From: So Cal
I don't know why I'd be afraid to sea foam this car. I sea foamed my camaro and it was fine, but for some reason I'm scared to do this one lol. I probalby need spark plugs too...28k miles and they've not been changed.
Thread Starter
Former Vendor
iTrader: (6)
Joined: 05-01-09
Posts: 5,973
Likes: 0
From: NEPA/North NJ
I run them at .030. Ive been sticking with stock each plug change this time I wanted to swap them before going to the track and no dealers had them. I figured this was a good time to try a diff plug lol
Senior Member
Joined: 07-25-08
Posts: 12,450
Likes: 6
From: Florida
It has solvents in it that are supposed to break up deposits. My CPs are clean and dry inside and my TB was pretty clean at 20K miles. I cleaned the TB with carb cleaner and it was cleaner than my GTO's TB was at 6K miles LOL. It is a PITA to clean the TB on this car.