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post #1 of 5 (permalink) Old 06-14-05, 01:11 AM
paul
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96 f150 check engine light

I have a 1996 f 150 with a 4.9L The check engine light is on. "system to
lean bank one and bank two"

I have already cleaned the injectors, changed the plugs and ran cleaner
through the gas tank. I changed over from conventional oil to mobil one.

Any ideas???




 
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post #2 of 5 (permalink) Old 06-14-05, 01:11 AM
TranSurgeon
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Re: 96 f150 check engine light

plugged fuel filter or low pressure from fuel pump, mebbe ?

is there a test fitting on the fuel rail ?


"paul" <paulreiny@earthlink.net> wrote in message
news:Yh6pe.390$VK4.113@newsread1.news.atl.earthlink.net...
> I have a 1996 f 150 with a 4.9L The check engine light is on. "system

to
> lean bank one and bank two"
>
> I have already cleaned the injectors, changed the plugs and ran cleaner
> through the gas tank. I changed over from conventional oil to mobil one.
>
> Any ideas???
>
>



 
post #3 of 5 (permalink) Old 06-14-05, 01:11 AM
coryrhonda
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Re: 96 f150 check engine light

check the gasket between the upper and lower intake manifolds for a leak.
That gasket has a slight higher than average failure rate when older. Spay
bottle with course mist of water (safer) or carb spay will dramatically
change the idle when sucked in a leak. if not leaking check for any other
leaks.
Watch the carb spray around the distributor exspecially


 
post #4 of 5 (permalink) Old 06-14-05, 01:11 AM
David M
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Re: 96 f150 check engine light

On Tue, 07 Jun 2005 00:57:28 +0000, paul rearranged some electrons to
form:

> I have a 1996 f 150 with a 4.9L The check engine light is on. "system to
> lean bank one and bank two"
>
> I have already cleaned the injectors, changed the plugs and ran cleaner
> through the gas tank. I changed over from conventional oil to mobil one.
>
> Any ideas???


Vacuum leak, maybe?

--
David M (dmacchiarolo)
http://home.triad.rr.com/redsled
T/S 53
sled351 Linux 2.4.18-14 has been up 13 days 3:04

 
post #5 of 5 (permalink) Old 06-14-05, 01:11 AM
BCM
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Re: 96 f150 check engine light

Sounds like you need a new fuel pump. I just went through the same problem.
Cause was the fuel pump and one of the 02's



"paul" <paulreiny@earthlink.net> wrote in message
news:Yh6pe.390$VK4.113@newsread1.news.atl.earthlink.net...
> I have a 1996 f 150 with a 4.9L The check engine light is on. "system
> to lean bank one and bank two"
>
> I have already cleaned the injectors, changed the plugs and ran cleaner
> through the gas tank. I changed over from conventional oil to mobil one.
>
> Any ideas???
>



 
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