Re: 2002 Grand Cherokee Hard to Start
 

Just for closure, in case anyone runs in to the same problem. It's
finally fixed ... heh. I picked it up yesterday. There were two
leaking injectors, one leaking outside (they mentioned replacing an
o-ring), and one leaking into the intake. Hopefully this is *really*
the end of it.

Thanks to the group for all your replies.



bllsht wrote:
> On 20 Oct 2006 14:04:30 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>
> >No luck. I'm still experiencing the same problem. Fortunately, the
> >valve job was a warranty job. I did notice that I smell gas when it
> >starts hard. It seems like it must be flooding. Any chance the
> >throttle body is toast?
>
> No surprise there...
>
> I'd agree with your flooding theory, but it's not caused by the
> T/Body, as it has nothing to do with fuel. It just regulates how much
> air is allowed into the engine. It is most likely an injector slowly
> dripping fuel into the intake, causing a pool of fuel and a mixture
> that is WAY too rich for starting. It will then take several
> revolutions before the engine will start. It may run a little rough
> for a few seconds after startup also.
>
> It's a simple diagnosis, and you can even tell the idiots how it's
> done... Just run the engine until it's at operating temp. Shut it
> off, unbolt the fuel rail and pull the injectors out far enough to see
> the business end. The leaking injector will be obvious. Note that
> this is done with the injectors and fuel line still connected to the
> rail, as the system must be under pressure to see the leak.
>
> Or, since these guys seem to prefer the shotgun approach over
> diagnosis, they could just replace all of the injectors.
>
>
>
>
> >
> >bllsht wrote:
> >> On 20 Oct 2006 08:44:43 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
> >>
> >> >Over the last week, the dealer has:
> >> >- Tested the injection system.
> >> >- Tested a bunch of sensors.
> >> >- Checked all the grounds, battery, etc.
> >> >
> >> >They suspected it could be carbon build up and suggested having the
> >> >valves cleaned/replaced if necessary. A compression test showed 1
> >> >cylinder down in the 120 range, so the valve job is uderway. Ugh.
> >>
> >> Sounds like an expensive guess to me.

Re: 2002 Grand Cherokee Hard to Start
 

Thanks.
Did they start leaking on their own or did someone pull them and
not replace the O rings?
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Argo wrote:
>
> Just for closure, in case anyone runs in to the same problem. It's
> finally fixed ... heh. I picked it up yesterday. There were two
> leaking injectors, one leaking outside (they mentioned replacing an
> o-ring), and one leaking into the intake. Hopefully this is *really*
> the end of it.
>
> Thanks to the group for all your replies.

Re: 2002 Grand Cherokee Hard to Start
 

Thanks.
Did they start leaking on their own or did someone pull them and
not replace the O rings?
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Argo wrote:
>
> Just for closure, in case anyone runs in to the same problem. It's
> finally fixed ... heh. I picked it up yesterday. There were two
> leaking injectors, one leaking outside (they mentioned replacing an
> o-ring), and one leaking into the intake. Hopefully this is *really*
> the end of it.
>
> Thanks to the group for all your replies.

Re: 2002 Grand Cherokee Hard to Start
 

Thanks.
Did they start leaking on their own or did someone pull them and
not replace the O rings?
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Argo wrote:
>
> Just for closure, in case anyone runs in to the same problem. It's
> finally fixed ... heh. I picked it up yesterday. There were two
> leaking injectors, one leaking outside (they mentioned replacing an
> o-ring), and one leaking into the intake. Hopefully this is *really*
> the end of it.
>
> Thanks to the group for all your replies.

Re: 2002 Grand Cherokee Hard to Start
 

Lots of expensive parts replaced for a simple problem. Did they
finally figure it out, or did you have to tell them how to diagnose
it?



On 3 Nov 2006 11:18:36 -0800, "Argo" <mikemcd@nbnet.nb.ca> wrote:

>Just for closure, in case anyone runs in to the same problem. It's
>finally fixed ... heh. I picked it up yesterday. There were two
>leaking injectors, one leaking outside (they mentioned replacing an
>o-ring), and one leaking into the intake. Hopefully this is *really*
>the end of it.
>
>Thanks to the group for all your replies.
>
>
>
>bllsht wrote:
>> On 20 Oct 2006 14:04:30 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>>
>> >No luck. I'm still experiencing the same problem. Fortunately, the
>> >valve job was a warranty job. I did notice that I smell gas when it
>> >starts hard. It seems like it must be flooding. Any chance the
>> >throttle body is toast?
>>
>> No surprise there...
>>
>> I'd agree with your flooding theory, but it's not caused by the
>> T/Body, as it has nothing to do with fuel. It just regulates how much
>> air is allowed into the engine. It is most likely an injector slowly
>> dripping fuel into the intake, causing a pool of fuel and a mixture
>> that is WAY too rich for starting. It will then take several
>> revolutions before the engine will start. It may run a little rough
>> for a few seconds after startup also.
>>
>> It's a simple diagnosis, and you can even tell the idiots how it's
>> done... Just run the engine until it's at operating temp. Shut it
>> off, unbolt the fuel rail and pull the injectors out far enough to see
>> the business end. The leaking injector will be obvious. Note that
>> this is done with the injectors and fuel line still connected to the
>> rail, as the system must be under pressure to see the leak.
>>
>> Or, since these guys seem to prefer the shotgun approach over
>> diagnosis, they could just replace all of the injectors.
>>
>>
>>
>>
>> >
>> >bllsht wrote:
>> >> On 20 Oct 2006 08:44:43 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>> >>
>> >> >Over the last week, the dealer has:
>> >> >- Tested the injection system.
>> >> >- Tested a bunch of sensors.
>> >> >- Checked all the grounds, battery, etc.
>> >> >
>> >> >They suspected it could be carbon build up and suggested having the
>> >> >valves cleaned/replaced if necessary. A compression test showed 1
>> >> >cylinder down in the 120 range, so the valve job is uderway. Ugh.
>> >>
>> >> Sounds like an expensive guess to me.

Re: 2002 Grand Cherokee Hard to Start
 

Lots of expensive parts replaced for a simple problem. Did they
finally figure it out, or did you have to tell them how to diagnose
it?



On 3 Nov 2006 11:18:36 -0800, "Argo" <mikemcd@nbnet.nb.ca> wrote:

>Just for closure, in case anyone runs in to the same problem. It's
>finally fixed ... heh. I picked it up yesterday. There were two
>leaking injectors, one leaking outside (they mentioned replacing an
>o-ring), and one leaking into the intake. Hopefully this is *really*
>the end of it.
>
>Thanks to the group for all your replies.
>
>
>
>bllsht wrote:
>> On 20 Oct 2006 14:04:30 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>>
>> >No luck. I'm still experiencing the same problem. Fortunately, the
>> >valve job was a warranty job. I did notice that I smell gas when it
>> >starts hard. It seems like it must be flooding. Any chance the
>> >throttle body is toast?
>>
>> No surprise there...
>>
>> I'd agree with your flooding theory, but it's not caused by the
>> T/Body, as it has nothing to do with fuel. It just regulates how much
>> air is allowed into the engine. It is most likely an injector slowly
>> dripping fuel into the intake, causing a pool of fuel and a mixture
>> that is WAY too rich for starting. It will then take several
>> revolutions before the engine will start. It may run a little rough
>> for a few seconds after startup also.
>>
>> It's a simple diagnosis, and you can even tell the idiots how it's
>> done... Just run the engine until it's at operating temp. Shut it
>> off, unbolt the fuel rail and pull the injectors out far enough to see
>> the business end. The leaking injector will be obvious. Note that
>> this is done with the injectors and fuel line still connected to the
>> rail, as the system must be under pressure to see the leak.
>>
>> Or, since these guys seem to prefer the shotgun approach over
>> diagnosis, they could just replace all of the injectors.
>>
>>
>>
>>
>> >
>> >bllsht wrote:
>> >> On 20 Oct 2006 08:44:43 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>> >>
>> >> >Over the last week, the dealer has:
>> >> >- Tested the injection system.
>> >> >- Tested a bunch of sensors.
>> >> >- Checked all the grounds, battery, etc.
>> >> >
>> >> >They suspected it could be carbon build up and suggested having the
>> >> >valves cleaned/replaced if necessary. A compression test showed 1
>> >> >cylinder down in the 120 range, so the valve job is uderway. Ugh.
>> >>
>> >> Sounds like an expensive guess to me.

Re: 2002 Grand Cherokee Hard to Start
 

Lots of expensive parts replaced for a simple problem. Did they
finally figure it out, or did you have to tell them how to diagnose
it?



On 3 Nov 2006 11:18:36 -0800, "Argo" <mikemcd@nbnet.nb.ca> wrote:

>Just for closure, in case anyone runs in to the same problem. It's
>finally fixed ... heh. I picked it up yesterday. There were two
>leaking injectors, one leaking outside (they mentioned replacing an
>o-ring), and one leaking into the intake. Hopefully this is *really*
>the end of it.
>
>Thanks to the group for all your replies.
>
>
>
>bllsht wrote:
>> On 20 Oct 2006 14:04:30 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>>
>> >No luck. I'm still experiencing the same problem. Fortunately, the
>> >valve job was a warranty job. I did notice that I smell gas when it
>> >starts hard. It seems like it must be flooding. Any chance the
>> >throttle body is toast?
>>
>> No surprise there...
>>
>> I'd agree with your flooding theory, but it's not caused by the
>> T/Body, as it has nothing to do with fuel. It just regulates how much
>> air is allowed into the engine. It is most likely an injector slowly
>> dripping fuel into the intake, causing a pool of fuel and a mixture
>> that is WAY too rich for starting. It will then take several
>> revolutions before the engine will start. It may run a little rough
>> for a few seconds after startup also.
>>
>> It's a simple diagnosis, and you can even tell the idiots how it's
>> done... Just run the engine until it's at operating temp. Shut it
>> off, unbolt the fuel rail and pull the injectors out far enough to see
>> the business end. The leaking injector will be obvious. Note that
>> this is done with the injectors and fuel line still connected to the
>> rail, as the system must be under pressure to see the leak.
>>
>> Or, since these guys seem to prefer the shotgun approach over
>> diagnosis, they could just replace all of the injectors.
>>
>>
>>
>>
>> >
>> >bllsht wrote:
>> >> On 20 Oct 2006 08:44:43 -0700, "Argo" <mikemcd@nbnet.nb.ca> wrote:
>> >>
>> >> >Over the last week, the dealer has:
>> >> >- Tested the injection system.
>> >> >- Tested a bunch of sensors.
>> >> >- Checked all the grounds, battery, etc.
>> >> >
>> >> >They suspected it could be carbon build up and suggested having the
>> >> >valves cleaned/replaced if necessary. A compression test showed 1
>> >> >cylinder down in the 120 range, so the valve job is uderway. Ugh.
>> >>
>> >> Sounds like an expensive guess to me.