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* nissan sentra hard to start in hot weather - 6 messages, 6 authors
http://groups.google.com/group/alt.autos.nissan/t/cde28eb158f68a64?hl=en
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TOPIC: nissan sentra hard to start in hot weather
http://groups.google.com/group/alt.autos.nissan/t/cde28eb158f68a64?hl=en
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== 1 of 6 ==
Date: Mon, Apr 25 2011 8:30 pm
From: jim beam
On 04/25/2011 01:16 PM, john.1.clarkson@spamgourmet.com wrote:
> hello i've got a routine fuel-injected car, a 2004 nissan sentra.
>
> it usually has the trouble-free starting -- you turn the key, no
> accelerator pumping, in fact the manual tells you NOT to pump.
>
> however, i found as hot weather encroached these last 2 years, that if
> i leave the car out where it's hot, then it becomes hard to start. in
> fact, i have to pump the accelerator as if i still had a carburetor.
>
> is there a reason in hot weather for starting to be difficult, and if
> so, a remedy? thanks.
sounds just like the famous honda hot weather starting problem. check out:
http://techauto.tripod.com/mainrelay.htm
further wisdom here:
http://www.tegger.com/hondafaq/startproblems.html#mainrelay
--
nomina rutrum rutrum
== 2 of 6 ==
Date: Tues, Apr 26 2011 8:09 am
From: Jim Yanik
jim beam <me@privacy.net> wrote in
news:H_GdnZEKMYLooSvQnZ2dnUVZ_sidnZ2d@speakeasy.net:
> On 04/25/2011 01:16 PM, john.1.clarkson@spamgourmet.com wrote:
>> hello i've got a routine fuel-injected car, a 2004 nissan sentra.
>>
>> it usually has the trouble-free starting -- you turn the key, no
>> accelerator pumping, in fact the manual tells you NOT to pump.
>>
>> however, i found as hot weather encroached these last 2 years, that
>> if i leave the car out where it's hot, then it becomes hard to start.
>> in fact, i have to pump the accelerator as if i still had a
>> carburetor.
>>
>> is there a reason in hot weather for starting to be difficult, and if
>> so, a remedy? thanks.
>
> sounds just like the famous honda hot weather starting problem. check
> out:
>
> http://techauto.tripod.com/mainrelay.htm
>
> further wisdom here:
>
> http://www.tegger.com/hondafaq/startproblems.html#mainrelay
>
>
An easy test to see if the fuel pump is being energized is to remove the
gas cap,have an assistant turn the key to 'start' but NOT crank the
motor,and listen at the fuel filler for the whine of the fuel pump.
the pump stops after a few seconds,so you can't just turn the key yourself
and run back to listen.
--
Jim Yanik
jyanik
at
localnet
dot com
== 3 of 6 ==
Date: Tues, Apr 26 2011 12:50 pm
From: Ashton Crusher
On Mon, 25 Apr 2011 17:16:34 -0400, willshak <willshak@00hvc.rr.com>
wrote:
>john.1.clarkson@spamgourmet.com wrote the following:
>> hello i've got a routine fuel-injected car, a 2004 nissan sentra.
>>
>> it usually has the trouble-free starting -- you turn the key, no
>> accelerator pumping, in fact the manual tells you NOT to pump.
>>
>> however, i found as hot weather encroached these last 2 years, that if
>> i leave the car out where it's hot, then it becomes hard to start. in
>> fact, i have to pump the accelerator as if i still had a carburetor.
>>
>> is there a reason in hot weather for starting to be difficult, and if
>> so, a remedy? thanks.
>>
>You never have to pump the accelerator in a fuel injected car to start
>it, not ever!
Not the full story. While rare, it's possible for a fuel injected car
to flood. Could be one or more leaky injectors. The FI system is
designed so that if you push the pedal ALL the way to the floor it
will reduce whatever the normal fuel amount would be during a start to
allow it to start while flooded. So depending on whether his pumping
of the pedal might activate that system it is possible his pumping
helped start the car.
>There is no carburetor float bowl holding gasoline, so there is no
>reserve fuel to inject into the engine.
>You claiming that pumping was needed to start the car in hot weather was
>false.
>While you were stomping on the gas pedal, the fuel was being pumped up
>from the tank.
>It would have started whether or not you touched the gas pedal.
>If, when starting the car, you pause at the run position for a second or
>so on the ignition switch, that will give the fuel pump time to get the
>gas to the injectors.
>Then you move the key to the start position.
== 4 of 6 ==
Date: Tues, Apr 26 2011 4:19 pm
From: Vic Smith
On Tue, 26 Apr 2011 12:50:51 -0700, Ashton Crusher <demi@moore.net>
wrote:
>On Mon, 25 Apr 2011 17:16:34 -0400, willshak <willshak@00hvc.rr.com>
>wrote:
>
>>john.1.clarkson@spamgourmet.com wrote the following:
>>> hello i've got a routine fuel-injected car, a 2004 nissan sentra.
>>>
>>> it usually has the trouble-free starting -- you turn the key, no
>>> accelerator pumping, in fact the manual tells you NOT to pump.
>>>
>>> however, i found as hot weather encroached these last 2 years, that if
>>> i leave the car out where it's hot, then it becomes hard to start. in
>>> fact, i have to pump the accelerator as if i still had a carburetor.
>>>
>>> is there a reason in hot weather for starting to be difficult, and if
>>> so, a remedy? thanks.
>>>
Check your fuel pressure.
I had that problem and it was the fuel pump going bad.
--Vic
== 5 of 6 ==
Date: Tues, Apr 26 2011 4:46 pm
From: john.1.clarkson@spamgourmet.com
ok thanks for all the advice. it sounds like something centering
around the fuel pump. i'm not ready to rush in for a big repair bill,
but in response to the first person to reply, it definitely is harder
to start on a hot day than on a cold one. it cranks without igniting.
== 6 of 6 ==
Date: Tues, Apr 26 2011 4:59 pm
From: kludge@panix.com (Scott Dorsey)
In article <e5bbe60f-77cd-4b69-b938-7a854ef1643f@y31g2000vbp.googlegroups.com>,
<john.1.clarkson@spamgourmet.com> wrote:
>ok thanks for all the advice. it sounds like something centering
>around the fuel pump. i'm not ready to rush in for a big repair bill,
>but in response to the first person to reply, it definitely is harder
>to start on a hot day than on a cold one. it cranks without igniting.
Well, measure the fuel pressure at the rail and see if it matches what
the manual says.
Did you change your fuel filter when the manual said to?
All kinds of things can reduce your fuel pressure, from a clogged filter on
up. But until you hook the gauge up, you don't even know if it's a fuel
pressure issue.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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