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.



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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.



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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.



--
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The Usenet Improvement Project:
http://improve-usenet.org