Difficult Starts - Requires Two Attempts
 

I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
past six+ months it almost never starts on the first turn of the key,
but always starts like a new car on the second attempt. It is as
though the first attempt is just practice or "priming the pump".

I have put in new spark plugs, but that hasn't helped.

Thanks for your help, this baby has to last until the girls are out of
college - another four years!

Best wishes --- Morgan

Re: Difficult Starts - Requires Two Attempts
 

I believe that there is a check valve or backflow valve that keeps the
fuel pressure up after you shut off the vehicle. It will be either on
the top of the fuel tank or on the fuel pump/level gauge unit. You can
confirm this theory by renting or buying a pressure gauge to put on the
fuel rail and check for leak down. Aside from the labor to drop the
fuel tank, the fix is not a big deal.

Cheers,

Earle

"Daddy-O" <morgan@thedef.org> wrote in message
news:1194140300.439613.212500@o80g2000hse.googlegr oups.com...
> I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the key,
> but always starts like a new car on the second attempt. It is as
> though the first attempt is just practice or "priming the pump".
>
> I have put in new spark plugs, but that hasn't helped.
>
> Thanks for your help, this baby has to last until the girls are out of
> college - another four years!
>
> Best wishes --- Morgan
>



--
Posted via a free Usenet account from http://www.teranews.com

Re: Difficult Starts - Requires Two Attempts
 

I believe that there is a check valve or backflow valve that keeps the
fuel pressure up after you shut off the vehicle. It will be either on
the top of the fuel tank or on the fuel pump/level gauge unit. You can
confirm this theory by renting or buying a pressure gauge to put on the
fuel rail and check for leak down. Aside from the labor to drop the
fuel tank, the fix is not a big deal.

Cheers,

Earle

"Daddy-O" <morgan@thedef.org> wrote in message
news:1194140300.439613.212500@o80g2000hse.googlegr oups.com...
> I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the key,
> but always starts like a new car on the second attempt. It is as
> though the first attempt is just practice or "priming the pump".
>
> I have put in new spark plugs, but that hasn't helped.
>
> Thanks for your help, this baby has to last until the girls are out of
> college - another four years!
>
> Best wishes --- Morgan
>



--
Posted via a free Usenet account from http://www.teranews.com

Re: Difficult Starts - Requires Two Attempts
 

I believe that there is a check valve or backflow valve that keeps the
fuel pressure up after you shut off the vehicle. It will be either on
the top of the fuel tank or on the fuel pump/level gauge unit. You can
confirm this theory by renting or buying a pressure gauge to put on the
fuel rail and check for leak down. Aside from the labor to drop the
fuel tank, the fix is not a big deal.

Cheers,

Earle

"Daddy-O" <morgan@thedef.org> wrote in message
news:1194140300.439613.212500@o80g2000hse.googlegr oups.com...
> I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the key,
> but always starts like a new car on the second attempt. It is as
> though the first attempt is just practice or "priming the pump".
>
> I have put in new spark plugs, but that hasn't helped.
>
> Thanks for your help, this baby has to last until the girls are out of
> college - another four years!
>
> Best wishes --- Morgan
>



--
Posted via a free Usenet account from http://www.teranews.com

Re: Difficult Starts - Requires Two Attempts
 

Have the same symptoms with my 89. Started about a year after I had it.
Took it back to the dealer(s) and complained several times - to no avail.
The dealer(s) kept telling me that it was normal. Thing is, it started 1st
try every time for the first year I owned it when it was brand new.

Never have figured it out.


"Daddy-O" <morgan@thedef.org> wrote in message
news:1194140300.439613.212500@o80g2000hse.googlegr oups.com...
>I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the key,
> but always starts like a new car on the second attempt. It is as
> though the first attempt is just practice or "priming the pump".
>
> I have put in new spark plugs, but that hasn't helped.
>
> Thanks for your help, this baby has to last until the girls are out of
> college - another four years!
>
> Best wishes --- Morgan
>

Re: Difficult Starts - Requires Two Attempts
 

Have the same symptoms with my 89. Started about a year after I had it.
Took it back to the dealer(s) and complained several times - to no avail.
The dealer(s) kept telling me that it was normal. Thing is, it started 1st
try every time for the first year I owned it when it was brand new.

Never have figured it out.


"Daddy-O" <morgan@thedef.org> wrote in message
news:1194140300.439613.212500@o80g2000hse.googlegr oups.com...
>I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the key,
> but always starts like a new car on the second attempt. It is as
> though the first attempt is just practice or "priming the pump".
>
> I have put in new spark plugs, but that hasn't helped.
>
> Thanks for your help, this baby has to last until the girls are out of
> college - another four years!
>
> Best wishes --- Morgan
>

Re: Difficult Starts - Requires Two Attempts
 

Have the same symptoms with my 89. Started about a year after I had it.
Took it back to the dealer(s) and complained several times - to no avail.
The dealer(s) kept telling me that it was normal. Thing is, it started 1st
try every time for the first year I owned it when it was brand new.

Never have figured it out.


"Daddy-O" <morgan@thedef.org> wrote in message
news:1194140300.439613.212500@o80g2000hse.googlegr oups.com...
>I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the key,
> but always starts like a new car on the second attempt. It is as
> though the first attempt is just practice or "priming the pump".
>
> I have put in new spark plugs, but that hasn't helped.
>
> Thanks for your help, this baby has to last until the girls are out of
> college - another four years!
>
> Best wishes --- Morgan
>

Re: Difficult Starts - Requires Two Attempts
 

Daddy-O <morgan@thedef.org> wrote:

> I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the
> key, but always starts like a new car on the second attempt. It is
> as though the first attempt is just practice or "priming the
> pump".

Probably exactly correct. I had the same behavior on my '93 GC, it was
a bad fuel pump that was allowing fuel to bleed back from the fuel rail
to the tank. It started fine if it had only sat for a couple of hours
but overnight required 2 or 3 attempts to get it running.



--
XS11E, Killing all posts from Google Groups
The Usenet Improvement Project:
http://improve-usenet.org

Re: Difficult Starts - Requires Two Attempts
 

Daddy-O <morgan@thedef.org> wrote:

> I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the
> key, but always starts like a new car on the second attempt. It is
> as though the first attempt is just practice or "priming the
> pump".

Probably exactly correct. I had the same behavior on my '93 GC, it was
a bad fuel pump that was allowing fuel to bleed back from the fuel rail
to the tank. It started fine if it had only sat for a couple of hours
but overnight required 2 or 3 attempts to get it running.



--
XS11E, Killing all posts from Google Groups
The Usenet Improvement Project:
http://improve-usenet.org

Re: Difficult Starts - Requires Two Attempts
 

Daddy-O <morgan@thedef.org> wrote:

> I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the
> key, but always starts like a new car on the second attempt. It is
> as though the first attempt is just practice or "priming the
> pump".

Probably exactly correct. I had the same behavior on my '93 GC, it was
a bad fuel pump that was allowing fuel to bleed back from the fuel rail
to the tank. It started fine if it had only sat for a couple of hours
but overnight required 2 or 3 attempts to get it running.



--
XS11E, Killing all posts from Google Groups
The Usenet Improvement Project:
http://improve-usenet.org

Re: Difficult Starts - Requires Two Attempts
 

Daddy-O wrote:
> I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the key,
> but always starts like a new car on the second attempt. It is as
> though the first attempt is just practice or "priming the pump".
>
> I have put in new spark plugs, but that hasn't helped.
>
> Thanks for your help, this baby has to last until the girls are out of
> college - another four years!
>
> Best wishes --- Morgan
>

This is probably nothing to do with plugs.

I have a 95 4.0 that has been doing the same thing for over 5 years now.
Just turn the key on, wait until you hear the fuel pump stop, then turn
it to start. If that works, the problem is that fuel pressure is
leaking down as the vehicle sets idle. There really is nothing earth
endangering about this as long as you remember to just let the fuel pump
run a couple seconds before you turn the key to start.

Re: Difficult Starts - Requires Two Attempts
 

Daddy-O wrote:
> I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the key,
> but always starts like a new car on the second attempt. It is as
> though the first attempt is just practice or "priming the pump".
>
> I have put in new spark plugs, but that hasn't helped.
>
> Thanks for your help, this baby has to last until the girls are out of
> college - another four years!
>
> Best wishes --- Morgan
>

This is probably nothing to do with plugs.

I have a 95 4.0 that has been doing the same thing for over 5 years now.
Just turn the key on, wait until you hear the fuel pump stop, then turn
it to start. If that works, the problem is that fuel pressure is
leaking down as the vehicle sets idle. There really is nothing earth
endangering about this as long as you remember to just let the fuel pump
run a couple seconds before you turn the key to start.

Re: Difficult Starts - Requires Two Attempts
 

Daddy-O wrote:
> I have a 2000 Cherokee Classic - bone stock, 88,000 miles. For the
> past six+ months it almost never starts on the first turn of the key,
> but always starts like a new car on the second attempt. It is as
> though the first attempt is just practice or "priming the pump".
>
> I have put in new spark plugs, but that hasn't helped.
>
> Thanks for your help, this baby has to last until the girls are out of
> college - another four years!
>
> Best wishes --- Morgan
>

This is probably nothing to do with plugs.

I have a 95 4.0 that has been doing the same thing for over 5 years now.
Just turn the key on, wait until you hear the fuel pump stop, then turn
it to start. If that works, the problem is that fuel pressure is
leaking down as the vehicle sets idle. There really is nothing earth
endangering about this as long as you remember to just let the fuel pump
run a couple seconds before you turn the key to start.

Re: Difficult Starts - Requires Two Attempts
 

Ya, it's weird, even when I wait for the fuel pump to spool up, it still
takes two tries.

Iwill start on the first try after extended cranking, but it will start
easier if I crank it a just a bit and stop; then it'll start right away on
the second crank.
;
"Lon Stowell" <lon.stowell@comcast.net> wrote in message
news:dO6dnQ78J-avnLPanZ2dnUVZ_trinZ2d@comcast.com...

>>
>
> This is probably nothing to do with plugs.
>
> I have a 95 4.0 that has been doing the same thing for over 5 years now.
> Just turn the key on, wait until you hear the fuel pump stop, then turn it
> to start. If that works, the problem is that fuel pressure is leaking
> down as the vehicle sets idle. There really is nothing earth endangering
> about this as long as you remember to just let the fuel pump run a couple
> seconds before you turn the key to start.
>

Re: Difficult Starts - Requires Two Attempts
 

Ya, it's weird, even when I wait for the fuel pump to spool up, it still
takes two tries.

Iwill start on the first try after extended cranking, but it will start
easier if I crank it a just a bit and stop; then it'll start right away on
the second crank.
;
"Lon Stowell" <lon.stowell@comcast.net> wrote in message
news:dO6dnQ78J-avnLPanZ2dnUVZ_trinZ2d@comcast.com...

>>
>
> This is probably nothing to do with plugs.
>
> I have a 95 4.0 that has been doing the same thing for over 5 years now.
> Just turn the key on, wait until you hear the fuel pump stop, then turn it
> to start. If that works, the problem is that fuel pressure is leaking
> down as the vehicle sets idle. There really is nothing earth endangering
> about this as long as you remember to just let the fuel pump run a couple
> seconds before you turn the key to start.
>

Re: Difficult Starts - Requires Two Attempts
 

Ya, it's weird, even when I wait for the fuel pump to spool up, it still
takes two tries.

Iwill start on the first try after extended cranking, but it will start
easier if I crank it a just a bit and stop; then it'll start right away on
the second crank.
;
"Lon Stowell" <lon.stowell@comcast.net> wrote in message
news:dO6dnQ78J-avnLPanZ2dnUVZ_trinZ2d@comcast.com...

>>
>
> This is probably nothing to do with plugs.
>
> I have a 95 4.0 that has been doing the same thing for over 5 years now.
> Just turn the key on, wait until you hear the fuel pump stop, then turn it
> to start. If that works, the problem is that fuel pressure is leaking
> down as the vehicle sets idle. There really is nothing earth endangering
> about this as long as you remember to just let the fuel pump run a couple
> seconds before you turn the key to start.
>

Re: Difficult Starts - Requires Two Attempts
 

On Sun, 04 Nov 2007 21:35:00 GMT, "Brake Down" <Wonker@hotmail.com>
top posted like an ignorant ------- moron and wrote:

>Ya, it's weird, even when I wait for the fuel pump to spool up, it still
>takes two tries.
>
>Iwill start on the first try after extended cranking, but it will start
>easier if I crank it a just a bit and stop; then it'll start right away on
>the second crank.

Does the 4.0 have an oil pressure cut out? When the oil sending unit
on my car started going bad, that was one of the symptoms. I didn't
realise the connection until I replaced the oil sending unit for
another reason.


>"Lon Stowell" <lon.stowell@comcast.net> wrote in message
>news:dO6dnQ78J-avnLPanZ2dnUVZ_trinZ2d@comcast.com...
>
>>>
>>
>> This is probably nothing to do with plugs.
>>
>> I have a 95 4.0 that has been doing the same thing for over 5 years now.
>> Just turn the key on, wait until you hear the fuel pump stop, then turn it
>> to start. If that works, the problem is that fuel pressure is leaking
>> down as the vehicle sets idle. There really is nothing earth endangering
>> about this as long as you remember to just let the fuel pump run a couple
>> seconds before you turn the key to start.
>>
>
--
gburnore at DataBasix dot Com
---------------------------------------------------------------------------
How you look depends on where you go.
---------------------------------------------------------------------------
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| ÝÛ 0 1 7 2 3 / Ý³Þ 3 7 4 9 3 0 Û³
Black Helicopter Repair Services, Ltd.| Official Proof of Purchase
================================================== =========================

Re: Difficult Starts - Requires Two Attempts
 

On Sun, 04 Nov 2007 21:35:00 GMT, "Brake Down" <Wonker@hotmail.com>
top posted like an ignorant ------- moron and wrote:

>Ya, it's weird, even when I wait for the fuel pump to spool up, it still
>takes two tries.
>
>Iwill start on the first try after extended cranking, but it will start
>easier if I crank it a just a bit and stop; then it'll start right away on
>the second crank.

Does the 4.0 have an oil pressure cut out? When the oil sending unit
on my car started going bad, that was one of the symptoms. I didn't
realise the connection until I replaced the oil sending unit for
another reason.


>"Lon Stowell" <lon.stowell@comcast.net> wrote in message
>news:dO6dnQ78J-avnLPanZ2dnUVZ_trinZ2d@comcast.com...
>
>>>
>>
>> This is probably nothing to do with plugs.
>>
>> I have a 95 4.0 that has been doing the same thing for over 5 years now.
>> Just turn the key on, wait until you hear the fuel pump stop, then turn it
>> to start. If that works, the problem is that fuel pressure is leaking
>> down as the vehicle sets idle. There really is nothing earth endangering
>> about this as long as you remember to just let the fuel pump run a couple
>> seconds before you turn the key to start.
>>
>
--
gburnore at DataBasix dot Com
---------------------------------------------------------------------------
How you look depends on where you go.
---------------------------------------------------------------------------
Gary L. Burnore | ÝÛ³ºÝ³Þ³ºÝ³³Ýۺݳ޳ºÝ³Ý³Þ³ºÝ³ÝÝÛ³
| ÝÛ³ºÝ³Þ³ºÝ³³Ýۺݳ޳ºÝ³Ý³Þ³ºÝ³ÝÝÛ³
Official .sig, Accept no substitutes. | ÝÛ³ºÝ³Þ³ºÝ³³Ýۺݳ޳ºÝ³Ý³Þ³ºÝ³ÝÝÛ³
| ÝÛ 0 1 7 2 3 / Ý³Þ 3 7 4 9 3 0 Û³
Black Helicopter Repair Services, Ltd.| Official Proof of Purchase
================================================== =========================

Re: Difficult Starts - Requires Two Attempts
 

On Sun, 04 Nov 2007 21:35:00 GMT, "Brake Down" <Wonker@hotmail.com>
top posted like an ignorant ------- moron and wrote:

>Ya, it's weird, even when I wait for the fuel pump to spool up, it still
>takes two tries.
>
>Iwill start on the first try after extended cranking, but it will start
>easier if I crank it a just a bit and stop; then it'll start right away on
>the second crank.

Does the 4.0 have an oil pressure cut out? When the oil sending unit
on my car started going bad, that was one of the symptoms. I didn't
realise the connection until I replaced the oil sending unit for
another reason.


>"Lon Stowell" <lon.stowell@comcast.net> wrote in message
>news:dO6dnQ78J-avnLPanZ2dnUVZ_trinZ2d@comcast.com...
>
>>>
>>
>> This is probably nothing to do with plugs.
>>
>> I have a 95 4.0 that has been doing the same thing for over 5 years now.
>> Just turn the key on, wait until you hear the fuel pump stop, then turn it
>> to start. If that works, the problem is that fuel pressure is leaking
>> down as the vehicle sets idle. There really is nothing earth endangering
>> about this as long as you remember to just let the fuel pump run a couple
>> seconds before you turn the key to start.
>>
>
--
gburnore at DataBasix dot Com
---------------------------------------------------------------------------
How you look depends on where you go.
---------------------------------------------------------------------------
Gary L. Burnore | ÝÛ³ºÝ³Þ³ºÝ³³Ýۺݳ޳ºÝ³Ý³Þ³ºÝ³ÝÝÛ³
| ÝÛ³ºÝ³Þ³ºÝ³³Ýۺݳ޳ºÝ³Ý³Þ³ºÝ³ÝÝÛ³
Official .sig, Accept no substitutes. | ÝÛ³ºÝ³Þ³ºÝ³³Ýۺݳ޳ºÝ³Ý³Þ³ºÝ³ÝÝÛ³
| ÝÛ 0 1 7 2 3 / Ý³Þ 3 7 4 9 3 0 Û³
Black Helicopter Repair Services, Ltd.| Official Proof of Purchase
================================================== =========================

Re: Difficult Starts - Requires Two Attempts
 

That doesnt sound like simple leakdown.

Brake Down wrote:
> Ya, it's weird, even when I wait for the fuel pump to spool up, it still
> takes two tries.
>
> Iwill start on the first try after extended cranking, but it will start
> easier if I crank it a just a bit and stop; then it'll start right away on
> the second crank.
> ;
> "Lon Stowell" <lon.stowell@comcast.net> wrote in message
> news:dO6dnQ78J-avnLPanZ2dnUVZ_trinZ2d@comcast.com...
>
>> This is probably nothing to do with plugs.
>>
>> I have a 95 4.0 that has been doing the same thing for over 5 years now.
>> Just turn the key on, wait until you hear the fuel pump stop, then turn it
>> to start. If that works, the problem is that fuel pressure is leaking
>> down as the vehicle sets idle. There really is nothing earth endangering
>> about this as long as you remember to just let the fuel pump run a couple
>> seconds before you turn the key to start.
>>
>
>

Re: Difficult Starts - Requires Two Attempts
 

That doesnt sound like simple leakdown.

Brake Down wrote:
> Ya, it's weird, even when I wait for the fuel pump to spool up, it still
> takes two tries.
>
> Iwill start on the first try after extended cranking, but it will start
> easier if I crank it a just a bit and stop; then it'll start right away on
> the second crank.
> ;
> "Lon Stowell" <lon.stowell@comcast.net> wrote in message
> news:dO6dnQ78J-avnLPanZ2dnUVZ_trinZ2d@comcast.com...
>
>> This is probably nothing to do with plugs.
>>
>> I have a 95 4.0 that has been doing the same thing for over 5 years now.
>> Just turn the key on, wait until you hear the fuel pump stop, then turn it
>> to start. If that works, the problem is that fuel pressure is leaking
>> down as the vehicle sets idle. There really is nothing earth endangering
>> about this as long as you remember to just let the fuel pump run a couple
>> seconds before you turn the key to start.
>>
>
>

Re: Difficult Starts - Requires Two Attempts
 

That doesnt sound like simple leakdown.

Brake Down wrote:
> Ya, it's weird, even when I wait for the fuel pump to spool up, it still
> takes two tries.
>
> Iwill start on the first try after extended cranking, but it will start
> easier if I crank it a just a bit and stop; then it'll start right away on
> the second crank.
> ;
> "Lon Stowell" <lon.stowell@comcast.net> wrote in message
> news:dO6dnQ78J-avnLPanZ2dnUVZ_trinZ2d@comcast.com...
>
>> This is probably nothing to do with plugs.
>>
>> I have a 95 4.0 that has been doing the same thing for over 5 years now.
>> Just turn the key on, wait until you hear the fuel pump stop, then turn it
>> to start. If that works, the problem is that fuel pressure is leaking
>> down as the vehicle sets idle. There really is nothing earth endangering
>> about this as long as you remember to just let the fuel pump run a couple
>> seconds before you turn the key to start.
>>
>
>