View Poll Results: How often do you pour fuel injector cleaner in your tank?
every time I fill up with Gas
0
0%
every oil change
2
16.67%
when I feel it needs it
4
33.33%
fuel Injector cleaner? what's that?
6
50.00%
Voters: 12. You may not vote on this poll
Fuel injector maintenance
#1
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Join Date: Dec 2001
Location: Elkton MD USA
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Car: 1983, 1986
Engine: 2.8 2bbl, 2.8 MPFI
Transmission: 200C 3 speed, 700R4
Axle/Gears: 3.08, 3.42
Fuel injector maintenance
Just wanted to see what the general consensus is on fuel injector cleaner. I just got my car back from the shop and it needed 4 new injectors . So, I am wondering is any of that over-the-counter-pour-in-your-tank stuff good for our injectors? I usually add a bottle of the STP complete every three to six months
#3
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Car: 89 f-bird and some others
Engine: 3.4
Transmission: 700R4
Axle/Gears: 3.42
Do my injectors need cleaning? I'm guessing so. Will injector cleaner clean them? Probably not, but I might as well try. Every mod I make doesn't really do anything or makes it run worse (that and my exhaust gets louder everytime I drive it).
The way it idles and runs I think I really need new injectors.
The way it idles and runs I think I really need new injectors.
#4
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Join Date: Mar 2000
Location: Central NJ, USA
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Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
You have multec's in your car, Drew? Did you notice any improvement with 'em? Did the book say why not? I know the Multec's are less prone to clogging up... but I didn't think cleaner would ruin 'em.
There should've been another option... "when I remember to"! Speaking of that, ya know, ever since I had those injectors cleaned by Rich @ Cruizin', I don't think I've put any fuel treatment in (including regular fuel injection cleaner or dry gas) in! Oops. I better go buy a bottle today.
There should've been another option... "when I remember to"! Speaking of that, ya know, ever since I had those injectors cleaned by Rich @ Cruizin', I don't think I've put any fuel treatment in (including regular fuel injection cleaner or dry gas) in! Oops. I better go buy a bottle today.
#5
Supreme Member
iTrader: (58)
GM rochester switched to the multec style injectors in the late 80's, so yes my 3.1 has multec injectors. The helms manual, and service bullitins state that the chemicals in fuel injector cleaners will damage the injectors. They also state that the multec injectors are self cleaning. Anything added to a tank of gas other than gas stabilizer is snake oil. That combined with the fact that they could possibly damage the injectors tells me its not worth the trouble.
Also when you consider how many GM products use the 2.8 and 3.1 there are more than enough junkyard injectors in cirulation to put together a good set.
Also when you consider how many GM products use the 2.8 and 3.1 there are more than enough junkyard injectors in cirulation to put together a good set.
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#8
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iTrader: (58)
Its easy to tell the injectors apart... the pintle style injectors have the stepped sides, the multec injectors are smooth sided in black or gray with a silver ring at the bottom...
From the TPI swappers guide...
These are late 2.8 or 3.1L injectors... Third from the right is an oddball, not sure what its from but its not a 3.1, 2.8, 5.0, or 5.7L injector.
These are the 3.4L injectors I have for sale...
From the TPI swappers guide...
These are late 2.8 or 3.1L injectors... Third from the right is an oddball, not sure what its from but its not a 3.1, 2.8, 5.0, or 5.7L injector.
These are the 3.4L injectors I have for sale...
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