nissan sentra hard to start in hot weather
john.1....@spamgourmet.com
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.
willshak
it, not ever!
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.
--
Bill
In Hamptonburgh, NY
In the original Orange County. Est. 1683
To email, remove the double zeroes after @
jim beam
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
Jim Yanik
news:H_GdnZEKMYLooSvQ...@speakeasy.net:
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
Ashton Crusher
wrote:
>john.1....@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.
Vic Smith
wrote:
>On Mon, 25 Apr 2011 17:16:34 -0400, willshak <will...@00hvc.rr.com>
>wrote:
>
>>john.1....@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
john.1....@spamgourmet.com
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.
Scott Dorsey
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."
Striker
the crank position sensor was having problems.
Striker
<john.1....@spamgourmet.com> wrote in message
news:d8593376-587d-49b8...@q32g2000yqn.googlegroups.com...
AS
may tell the engine it is cold and supply more fuel than needed,
flooding the engine. A friend had a corolla with this problem. He
would crank sometimes up to 10 minutes for the car to start. The ECT
was the culprit.
Fuel pump could be a problem but as someone else suggested, fuel filter
is a starting point.
Flooring the gas pedal will cut the fuel supply and will help start a
flooded engine.
Good luck,
AS
Kevin Bottorff
dn...@earthlink.com:
> The engine coolant temperature sensor can also cause this behaviour.
It
> may tell the engine it is cold and supply more fuel than needed,
> flooding the engine. A friend had a corolla with this problem. He
> would crank sometimes up to 10 minutes for the car to start. The ECT
> was the culprit.
>
> Fuel pump could be a problem but as someone else suggested, fuel filter
> is a starting point.
>
> Flooring the gas pedal will cut the fuel supply and will help start a
> flooded engine.
You have to have the pedal floored BEFORE turning on the key for that
to work. KB
gto...@gmail.com
> 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.
I've been having a similar problem with my 2004 Sentra 1.8L. If it sits awhile in hot weather (Arizona), it takes several seconds cranking the ignition before it starts. I thought the battery was dying from the heat, so I replaced it, but still have the same problem. I've also noticed that if I go start it every 2-3 hours for a few seconds, it will start right away. This is a tough problem to diagnose because it won't have this problem when I take it to a mechanic because it starts fine if it has been running. If anyone has any advice, I'm open.
Thanks!
Geoff Welsh
shop for a few days. That way they can be ready to check for fuel and
spark, before/when the problem occurs.
GW
KG
due to the heat, causing the injectors to leak into the manifold. Try fully
depressing the accelerator as you would a flooded car. Some cars still have a direct
control of the throttle plate in the air intake. There should be an over pressure
valve in the injector circuit to drain off the overpressure.
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Paul in Houston TX
> On Wed, 12 Jun 2013 08:13:40 -1000, Geoff Welsh <GeeD...@some.rr.com> wrote:
>
>> gto...@gmail.com wrote:
>>> On Monday, April 25, 2011 1:16:34 PM UTC-7, john.1....@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.
>>> I've been having a similar problem with my 2004 Sentra 1.8L. If it sits awhile in hot weather (Arizona), it takes several seconds cranking the ignition before it starts. I thought the battery was dying from the heat, so I replaced it, but still have the same problem. I've also noticed that if I go start it every 2-3 hours for a few seconds, it will start right away. This is a tough problem to diagnose because it won't have this problem when I take it to a mechanic because it starts fine if it has been running. If anyone has any advice, I'm open.
>>> Thanks!
>> You need to thoroughly explain the problem and then leave the car at the
>> shop for a few days. That way they can be ready to check for fuel and
>> spark, before/when the problem occurs.
>>
>> GW
> Not an uncommon problem. After shutoff the fuel pressure rises in the injector lines
> due to the heat, causing the injectors to leak into the manifold. Try fully
> depressing the accelerator as you would a flooded car. Some cars still have a direct
> control of the throttle plate in the air intake. There should be an over pressure
> valve in the injector circuit to drain off the overpressure.
I was thinking just the opposite, that the pressure regulator is bad
and allowing fuel pressure to drop to zero after the car sits a while.
Scott Dorsey
>I was thinking just the opposite, that the pressure regulator is bad
>and allowing fuel pressure to drop to zero after the car sits a while.
the car. If it's the regulator leaking, it will start right up given those
ten seconds to build pressure up. Usually it only takes a couple seconds
actually.... this is a very different symptom than the one your car is
presenting.
Geoff Welsh
> Paul in Houston TX<Pa...@Houston.com> wrote:
>> I was thinking just the opposite, that the pressure regulator is bad
>> and allowing fuel pressure to drop to zero after the car sits a while.
>
> That happens too. Turn the key to ON, wait about ten seconds, then start
> the car. If it's the regulator leaking, it will start right up given those
> ten seconds to build pressure up. Usually it only takes a couple seconds
> actually.... this is a very different symptom than the one your car is
> presenting.
> --scott
here. They usually run one or two seconds only. It's in the logic of
the ECM/PCM
GW
Nate Nagel
in old VWs... my '84 GTI was like that. I actually bought the
replacement part but never swapped it because it was just easy enough to
leave a brief pause and let the fuel pump relay cycle out before
cranking the engine.
nate
--
replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel
dsi1
> Paul in Houston TX <Pa...@Houston.com> wrote:
>> I was thinking just the opposite, that the pressure regulator is bad
>> and allowing fuel pressure to drop to zero after the car sits a while.
>
> That happens too. Turn the key to ON, wait about ten seconds, then start
> the car. If it's the regulator leaking, it will start right up given those
> ten seconds to build pressure up. Usually it only takes a couple seconds
> actually.... this is a very different symptom than the one your car is
> presenting.
> --scott
>
running or I wouldn't. If I didn't, I open the hood and hit the black
box of relays. It was very thoughtful of Ford to stick that right in the
front so that I could easily whack it with a monkey wrench. After a
while, I just bought a used one from eBay for a few bucks.
My friend's 2.5L Sentra had a problem starting for years until he
changed the coils on his car. It works just spiffy now. OTOH, the OP
should make sure that it's not the fuel system that's the cause of the
problem first.
dsi1
keep the gasoline from boiling in the lines after the engine was shut
down. They made opening the fuel lines more involved because you had to
disconnect the fuel pump and run the engine until the pressure in the
line was normalized. I wonder if they still use them?