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08-19-2008, 03:30 PM #1
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Fuel injector service and tuning...
I've got a 98 WS-6, bought it new, and outside of using some Redline injector cleaner, haven't gone to a service shop or dealer to have my injectors/ports serviced and cleaned. Is this a critical maintenance item?
Also, and I was going to post this in the tuning section, but without going into the whole long story of why my car was there in the first place... I ended up with my car at a Chevy dealership after a fuel pump failed on me. When I picked the car up they said they had "updated my computer."
I noticed that the car seemed to have a little more pep, but I also noticed that my fuel economy went out the window. Whereas I used to get about 25-28 MPG on the highway, I'm now down to 20 MPG. I've had the car smogged since and it again passed with flying colors so I have no concerns there, but I want my fuel economy back!
Any ideas on why this is happening and/or how I can get it "fixed?"
Thanks
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08-19-2008, 03:34 PM #2
Give them a call and ask them what all did they do
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08-19-2008, 04:40 PM #3
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08-20-2008, 02:04 PM #4
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08-21-2008, 07:17 AM #5
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08-22-2008, 06:35 AM #6
O2s are running the show for closed loop fueling, so they are suspect as soon as mileage is mentioned.
Is there some issue that you are having (mileage not withstanding) that makes you concerned about your injectors?
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08-22-2008, 08:47 AM #7
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Nope, there are no concerns other than the mileage, but I'm really not looking at the injectors for the major part of the mileage problem because I believe this change occured after the computer code update.
The car is performing well other than the mileage.
There is one other oddity that now occurs since the fuel pump was replaced. My fuel gage does not appear to be completely accurate any longer. It shows slightly above full when I fill the tank but it *quickly* drops about 1/8'th below full within about 5-10 miles. When on empty I can generally only get about 13-13.5 gallons before the tank is full so I suspect the reading is lower than the actual fuel available.
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08-22-2008, 12:48 PM #8
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08-22-2008, 01:04 PM #9
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08-22-2008, 01:45 PM #10
Do not do the injector cleaning/fuel injection service at a dealership. When I was wrenching we used to call it the "Wallet Flush"! You can get the same stuff at your local parts store and do it yourself.
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08-22-2008, 07:08 PM #11
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08-24-2008, 07:30 AM #12
It works just as well as the BG stuff
Lloyd - 2002 Pewter Z-28, T-Tops, Hurst Shifter, Corsa Exhaust, MAF Upgrade, Diablo Sport Tune, Centerforce HD Clutch, SLP lightened flywheel, SLP cold air kit w/ bellows, K&N Filter, Coming soon Ported and Polished heads.
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