91 4runner 3zve

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Old 07 Nov 2010, 10:08 pm   #1 (permalink)
chuck
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Default 91 4runner 3zve

My 91 4runner just developed this problem. The first time I start it in
the morning it starts really hard. Like maybe the fuel line is draining
back into the tank? Once it's started, it's fine till the next morning.
Also, what's the easiest/best way to put a fuel pressure gauge on this
engine? Thanks for any advice.
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Old 08 Nov 2010, 10:16 am   #2 (permalink)
Handyman
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Default Re: 91 4runner 3zve

On Nov 7, 9:08*pm, chuck <ch...@invalid.net> wrote:
> My 91 4runner just developed this problem. The first time I start it in
> the morning it starts really hard. Like maybe the fuel line is draining
> back into the tank? Once it's started, it's fine till the next morning.
> Also, what's the easiest/best way to put a fuel pressure gauge on this
> engine? Thanks for any advice.


The first thing I would do is check to see if the cold start injector
is working. There is a section of rubber fuel line just above the
driver's side fuel injector rail up near the distributor, that is
probably the easiest place to put a fuel pressure gauge. It doesn't
sound like a fuel pressure problem though if it is running fine the
rest of the day. My suspicion is that now that it is a bit colder in
the mornings the cold start injector isn't giving you the added burst
of fuel it needs when the engine is cold.
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